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Journal articles on the topic 'Potential visual acuity'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Marechal, L., J. Faidherbe, and M. Cieslak. "Evoked potential and visual acuity." Electroencephalography and Clinical Neurophysiology 61, no. 3 (1985): S135. http://dx.doi.org/10.1016/0013-4694(85)90529-2.

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2

Ing, Malcolm R. "Potential acuity meter to predict postoperative visual acuity." Journal of Cataract & Refractive Surgery 12, no. 1 (1986): 34–35. http://dx.doi.org/10.1016/s0886-3350(86)80052-9.

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3

Smiddy, William E., Diane Radulovic, Julia H. Yeo, Walter J. Stark, and A. Edward Maumenee. "Potential Acuity Meter for Potential Predicting Visual Acuity after Nd:YAG Posterior Capsulotomy." Ophthalmology 93, no. 3 (1986): 397–400. http://dx.doi.org/10.1016/s0161-6420(86)33723-0.

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4

Watson, Tonya, Deborah Orel-Bixler, and Gunilla Haegerstrom-Portnoy. "Early Visual-Evoked Potential Acuity and Future Behavioral Acuity in Cortical Visual Impairment." Optometry and Vision Science 87, no. 2 (2010): 80–86. http://dx.doi.org/10.1097/opx.0b013e3181c75184.

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5

Zheng, Xiaowei, Guanghua Xu, Kai Zhang, et al. "Assessment of Human Visual Acuity Using Visual Evoked Potential: A Review." Sensors 20, no. 19 (2020): 5542. http://dx.doi.org/10.3390/s20195542.

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Visual evoked potential (VEP) has been used as an alternative method to assess visual acuity objectively, especially in non-verbal infants and adults with low intellectual abilities or malingering. By sweeping the spatial frequency of visual stimuli and recording the corresponding VEP, VEP acuity can be defined by analyzing electroencephalography (EEG) signals. This paper presents a review on the VEP-based visual acuity assessment technique, including a brief overview of the technique, the effects of the parameters of visual stimuli, and signal acquisition and analysis of the VEP acuity test, and a summary of the current clinical applications of the technique. Finally, we discuss the current problems in this research domain and potential future work, which may enable this technique to be used more widely and quickly, deepening the VEP and even electrophysiology research on the detection and diagnosis of visual function.

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Vogelsang, Lukas, Sharon Gilad-Gutnick, Evan Ehrenberg, et al. "Potential downside of high initial visual acuity." Proceedings of the National Academy of Sciences 115, no. 44 (2018): 11333–38. http://dx.doi.org/10.1073/pnas.1800901115.

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Children who are treated for congenital cataracts later exhibit impairments in configural face analysis. This has been explained in terms of a critical period for the acquisition of normal face processing. Here, we consider a more parsimonious account according to which deficits in configural analysis result from the abnormally high initial retinal acuity that children treated for cataracts experience, relative to typical newborns. According to this proposal, the initial period of low retinal acuity characteristic of normal visual development induces extended spatial processing in the cortex that is important for configural face judgments. As a computational test of this hypothesis, we examined the effects of training with high-resolution or blurred images, and staged combinations, on the receptive fields and performance of a convolutional neural network. The results show that commencing training with blurred images creates receptive fields that integrate information across larger image areas and leads to improved performance and better generalization across a range of resolutions. These findings offer an explanation for the observed face recognition impairments after late treatment of congenital blindness, suggest an adaptive function for the acuity trajectory in normal development, and provide a scheme for improving the performance of computational face recognition systems.

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Katzhendler, Gal, and Daphna Weinshall. "Potential upside of high initial visual acuity?" Proceedings of the National Academy of Sciences 116, no. 38 (2019): 18765–66. http://dx.doi.org/10.1073/pnas.1906400116.

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8

Smiddy, William E., Tracey H. Horowitz, Walter J. Stark, Pamela Klein, Gregory P. Kracher, and A. Edward Maumenee. "Potential Acuity Meter for Predicting Postoperative Visual Acuity in Penetrating Keratoplasty." Ophthalmology 94, no. 1 (1987): 12–16. http://dx.doi.org/10.1016/s0161-6420(87)33511-0.

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9

Lue, Chung-Lin, Shiu-Chin Chen, and Wu Fu Tsai. "Potential Acuity Meter for Predicting Visual Acuity After Nd:YAG Posterior Capsulotomy." Journal of Clinical Laser Medicine & Surgery 9, no. 1 (1991): 59–61. http://dx.doi.org/10.1089/clm.1991.9.59.

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10

Christenbury, Jonathan D., and Samuel D. McPherson. "Potential Acuity Meter for Predicting Postoperative Visual Acuity in Cataract Patients." American Journal of Ophthalmology 99, no. 3 (1985): 365–66. http://dx.doi.org/10.1016/0002-9394(85)90374-5.

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11

Hofeldt, Albert J. "Illuminated near card assessment of potential visual acuity." Journal of Cataract & Refractive Surgery 22, no. 3 (1996): 367–71. http://dx.doi.org/10.1016/s0886-3350(96)80252-5.

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12

YOSHIGI, HIROSHI, YOSHIMITSU KOHMURA, MINORU TANAKA, and ATSUSHI MIZOTA. "The relationship between vertical kinetic visual acuity and visual evoked potential." Juntendo Medical Journal 53, no. 4 (2007): 615–21. http://dx.doi.org/10.14789/pjmj.53.615.

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13

Utami, Dera Tresna, and Fatimah Dyah NA. "Correlation Between Best Corrected Visual Acuity Acquired by Snellen Chart with Potential Visual Acuity of Retinometry in Ametropic Patients." Ophthalmologica Indonesiana 43, no. 1 (2019): 24. http://dx.doi.org/10.35749/journal.v43i1.133.

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   Introduction: Potential vision is determined by assessing macular function. Retinometer is a tool that is often used to assess the potential visual acuity. Refractive error is the most common cause of vision decline. Currently, examination of best visual acuity still uses Snellen chart, but if the result of vision correction with Snellen chart not maximized can cause the emergence of other problems such as amblyopia.  Objective: To analyze correlation between best corrected visual acuity (BCVA) acquired by Snellen chart with potential visual acuity of retinometry in ametropic patients. Methods: This was an observational cross sectional study, enrolled at department of ophthalmology dr. Karidi General Hospital. This study involving 73 myopic eyes of 40 patient. After having their potential vision examined with retinometer, patient undergoing visual acuity assesment with Snellen chart. Statistical analysis using Spearman correlation.  Result: In this study we found retinometry scale 0,8 for BCVA 1.0 (56,8%) and 0.32 for BCVA < 1.0 (48,4%) as the most common finding respectively. We found most of mild myopia cases in patients with BCVA 1,0 (52%) and high myopia in patients with BCVA < 1.0 (71%). Statistical analysis shows a moderate strength-positive correlation between potential visual acuity retinometry with best corrected visual acuity acquired by Snellen. Conclusion: BCVA acquired by Snellen shows moderate strength-positive correlation with potential visual acuity retinometry in ametropic patient. Scale 0.63 in retinometry can be used as benchmark for predicting visual acuity after correction reach 1.0.   

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14

Furuskog, Peter, Hans E. Persson, and Peter Wanger. "Subnormal visual acuity in children: prognosis and visual evoked cortical potential findings." Acta Ophthalmologica 65, no. 6 (2009): 668–72. http://dx.doi.org/10.1111/j.1755-3768.1987.tb07061.x.

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15

BOSSE, JAMES C. "Potential Visual Acuity Measured With and Without Pupil Dilation." Optometry and Vision Science 66, no. 8 (1989): 537–39. http://dx.doi.org/10.1097/00006324-198908000-00008.

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16

Wenner, Yaroslava, Sven P. Heinrich, Christina Beisse, Antje Fuchs, and Michael Bach. "Visual evoked potential-based acuity assessment: overestimation in amblyopia." Documenta Ophthalmologica 128, no. 3 (2014): 191–200. http://dx.doi.org/10.1007/s10633-014-9432-3.

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17

Steele, Mark, William H. Seiple, Ronald E. Carr, and Ronald Klug. "The Clinical Utility of Visual-Evoked Potential Acuity Testing." American Journal of Ophthalmology 108, no. 5 (1989): 572–77. http://dx.doi.org/10.1016/0002-9394(89)90436-4.

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18

Skoczenski, Ann M., and Anthony M. Norcia. "Late Maturation of Visual Hyperacuity." Psychological Science 13, no. 6 (2002): 537–41. http://dx.doi.org/10.1111/1467-9280.00494.

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We used a visual evoked-potential measure to study the development of two components of pattern vision, vernier acuity and grating acuity, in humans from early infancy through adolescence. These two visual functions develop at similar rates and have nearly the same absolute values between 1 month and 6 years of age. After age 6, grating acuity is constant at the adult level, but vernier acuity continues to improve, becoming a hyperacuity. Vernier acuity reaches asymptotic levels around age 14 years. These results suggest that adultlike vernier hyperacuity is not limited by spatial resolution or sensitivity of small receptive fields, but rather that the limitation is imposed by higher-level processing. Sensitivity, connections in visual cortical areas, or both therefore retain plasticity throughout childhood and into adolescence.

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19

Ridder, William H. "Methods of visual acuity determination with the spatial frequency sweep visual evoked potential." Documenta Ophthalmologica 109, no. 3 (2004): 239–47. http://dx.doi.org/10.1007/s10633-004-8053-7.

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20

Cuzzani, Oscar E., Jonathan P. Ellant, Peter W. Young, Howard V. Gimbel, and Maria Rydz. "Potential Acuity Meter versus Scanning Laser Ophthalmoscope to predict visual acuity in cataract patients." Journal of Cataract & Refractive Surgery 24, no. 2 (1998): 263–69. http://dx.doi.org/10.1016/s0886-3350(98)80209-5.

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21

Striem-Amit, Ella, Miriam Guendelman, and Amir Amedi. "‘Visual’ acuity of the congenitally blind using visual-to-auditory sensory substitution." Seeing and Perceiving 25 (2012): 191. http://dx.doi.org/10.1163/187847612x648206.

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Sensory Substitution Devices (SSDs) convey visual information through sounds or touch, thus theoretically enabling a form of visual rehabilitation in the blind. However, for clinical use, these devices must provide fine-detailed visual information which was not shown yet for this or other means of visual restoration. To test the possible functional acuity conveyed by such devices, we used the Snellen acuity test conveyed through a high-resolution visual-to-auditory SSD (The vOICe). We show that congenitally fully blind adults can exceed the World Health Organization (WHO) blindness acuity threshold using SSDs, reaching the highest acuity reported yet with any visual rehabilitation approach. Preliminary findings of a neuroimaging study of a similar reading task using SSDs suggest the specific involvement of the congenitally blind visual cortex in processing sights-from-sounds. These results demonstrate the potential capacity of SSDs as inexpensive, non-invasive visual rehabilitation aids, as well as their advantage in charting the retention of functional properties of the visual cortex of the blind.

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22

Chen, Xiping, Qianqian Li, Xiaoqin Liu, Li Yang, Wentao Xia, and Luyang Tao. "Visual acuity evaluated by pattern-reversal visual-evoked potential is affected by check size/visual angle." Neuroscience Bulletin 28, no. 6 (2012): 737–45. http://dx.doi.org/10.1007/s12264-012-1292-9.

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23

WIENER, DAN E., KENT WELLISH, J. I. NELSON, and M. J. KUPERSMITH. "Comparisons among Snellen, Psychophysical, and Evoked Potential Visual Acuity Determinations." Optometry and Vision Science 62, no. 10 (1985): 669–79. http://dx.doi.org/10.1097/00006324-198510000-00002.

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24

Li, Lu, Yu Su, Chang-zheng Chen, Chao Feng, Hong-mei Zheng, and Yi-qiao Xing. "Sweep Pattern Visual Evoked Potential Acuity in Children during Their Periods of Visual Development." Ophthalmologica 226, no. 4 (2011): 220–27. http://dx.doi.org/10.1159/000329866.

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25

van der Zee, Ymie J., Peter Stiers, and Heleen M. Evenhuis. "Should we add visual acuity ratios to referral criteria for potential cerebral visual impairment?" Journal of Optometry 10, no. 2 (2017): 95–103. http://dx.doi.org/10.1016/j.optom.2016.01.003.

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26

MAEHARA, Seiya, Yoshiki ITOH, Yosuke ITO, Miri HAYASHI, and Arisa MASUKO. "Measurement of visual acuity in Beagle dog by visual evoked potential with pattern stimulation." Journal of Veterinary Medical Science 80, no. 11 (2018): 1758–61. http://dx.doi.org/10.1292/jvms.18-0334.

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27

Le Sage, Cécile, Christian Bazalgette, Bernard Arnaud, and Clair-Florent Schmitt-Bernard. "Accuracy of IRAS GT interferometer and potential acuity meter prediction of visual acuity after phacoemulsification." Journal of Cataract & Refractive Surgery 28, no. 1 (2002): 131–38. http://dx.doi.org/10.1016/s0886-3350(01)01118-x.

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28

Cedzich, Cornelia, Johannes Schramm, and Rudolf Fahlbusch. "Are Flash-evoked Visual Potentials Useful for Intraoperative Monitoring of Visual Pathway Function?" Neurosurgery 21, no. 5 (1987): 709–15. http://dx.doi.org/10.1227/00006123-198711000-00018.

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Abstract Flash-evoked visual potentials (VEPs) recorded from the scalp were used in a series of 35 patients with tumors along the visual pathway: 3 orbital tumors, 25 perisellar tumors, 4 intraventricular tumors, and 3 occipital lesions. Preoperatively, various combinations of impaired visual fields and visual acuity were observed in over 90% of the patients. A postoperative decrease in visual function was observed in 3 cases. Of the 25 perisellar lesions, 13 were operated through a standard frontotemporal craniotomy and 12 were operated through a transnasal-transsphenoidal approach. VEPs were highly susceptible to volatile anesthetics, and there was a significant incidence of spontaneous latency increases and amplitude decreases in a large number of patients. There was an unacceptably high number of cases with significant VEP alteration occurring without concomitant visual function change. During trepanation or the transnasal approach, a reversible potential loss was observed in 11 patients, a profoundly altered wave form was seen in 8 cases, and a loss of single peaks was observed in 15 patients. During dissection of the tumor, a reversible potential loss or a potential with unidentifiable peaks was found in 25 cases; however, the VEPs recovered during closure or in the recovery room. There was no correlation between intraoperative VEP changes and the postoperative changes in visual function. In only 1 patient with an insignificant postoperative decrease in visual acuity from 0.4 to 0.3 was there a concomitant intraoperative potential loss. The major conclusion of our findings is that light-emitting diode flash-evoked VEPs demonstrate intraoperative changes that appear too early and too prominently to be caused solely by manipulation of the optic pathways. Therefore, light-emitting diode flash-evoked potentials do not seem to be a suitable instrument for the intraoperative monitoring of visual pathway function. (Neurosurgery 21:709-715, 1987)

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Alio, J. L., A. Artola, J. M. Ruiz-Moreno, M. M. Ismail, and M. J. Ayala. "Accuracy of the Potential Acuity Meter in Predicting the Visual Outcome in Cases of Cataract Associated with Macular Degeneration." European Journal of Ophthalmology 3, no. 4 (1993): 189–92. http://dx.doi.org/10.1177/112067219300300403.

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In order to ascertain the accuracy and specificity of the Potential Acuity Meter (PAM) in the preoperative evaluation of likely postoperative visual acuity in cases of cataract associated with age-related macular degeneration (ARMD), we studied the results in 130 cases, 54 of whom had preoperatively proved or suspected ARMD associated with a cataract. All of them were operated with extracapsular extraction and implantation of an intraocular lens (IOL), and final visual acuity was established when all the patients were visited three months postoperatively. A positive linear correlation was found between normal ocular fundus and PAM prediction (r = 0.77), and in the group of patients with preoperatively confirmed ARMD (r = 0.77). No difference was found between the preoperative PAM estimation and the final visual acuity in both groups. The PAM prediction was less accurate in cases with doubtful preoperative ARMD (r = 0.58) for whom showed PAM the highest score of false negatives in favor of the final visual acuity. Our results show that PAM is a reliable clinical technique for the prediction of visual results after cataract surgery in cases with preoperatively proved or doubtful macular pathology. To the best of our knowledge, this is the first report regarding the sensitivity and specificity of the PAM in diseased or suspicious maculas associated with cataract.

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30

Feldman, Robert M., and Leah Levi. "Use of the Potential Acuity Meter in Suspected Functional Visual Loss." American Journal of Ophthalmology 114, no. 4 (1992): 502–3. http://dx.doi.org/10.1016/s0002-9394(14)71866-5.

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31

Hellige, Joseph B. "Visual laterality and the acuity gradient: Potential artifacts and control procedures." Brain and Cognition 5, no. 3 (1986): 369–76. http://dx.doi.org/10.1016/0278-2626(86)90038-2.

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32

Ridder, William H., Bradley S. Waite, and Timothy F. Melton. "Comparing enfant and PowerDiva sweep visual evoked potential (sVEP) acuity estimates." Documenta Ophthalmologica 129, no. 2 (2014): 105–14. http://dx.doi.org/10.1007/s10633-014-9457-7.

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33

Siersma, Volkert, Rasmus Køster-Rasmussen, Christine Bruun, Niels de Fine Olivarius, and Audun Brunes. "Visual impairment and mortality in patients with type 2 diabetes." BMJ Open Diabetes Research & Care 7, no. 1 (2019): e000638. http://dx.doi.org/10.1136/bmjdrc-2018-000638.

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ObjectiveTo evaluate whether visual acuity impairment was an independent predictor of mortality in patients with type 2 diabetes.Research design and methodsThis is a 19-year follow-up of a cohort of 1241 patients newly diagnosed with type 2 diabetes and aged 40 years or over. Visual acuity was assessed by practicing ophthalmologists both at diabetes diagnosis and after 6 years. The logarithmic value of the visual acuity (logMAR) was the exposure. Multivariable Cox regression models were adjusted for multiple potential confounders including cardiovascular disease, and censored for potential mediators, that is, fractures/trauma. Primary outcomes were from national registers: all-cause mortality and diabetes-related mortality.ResultsVisual impairment at diabetes diagnosis was robustly associated with subsequent 6-year all-cause mortality. Per 1 unit reduced logMAR acuity the incidence rate of all-cause mortality increased with 51% (adjusted HR: 1.51; 95% CI 1.12 to 2.03) and of fractures/trauma with 59% (HR: 1.59; 95% CI 1.18 to 2.15), but visual acuity was not associated with diabetes-related mortality. After censoring for fractures/trauma, visual acuity was still an independent risk factor for all-cause mortality (HR: 1.68; 95% CI 1.23 to 2.30). In contrast, visual acuity 6 years after diabetes diagnosis was not associated with the subsequent 13 years’ incidence of any of the outcomes, as an apparent association with all-cause mortality and diabetes-related mortality was explained by confounding from comorbidity.ConclusionsVisual acuity measured by ophthalmologists in patients newly diagnosed with type 2 diabetes was an independent predictor of mortality in the short term.

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Zhu, Zhuoting, Leon B. Ellwein, Sean K. Wang, Jialiang Zhao, and Mingguang He. "Meeting the need for corrective spectacles in visually impaired Chinese school children: the potential of ready-made spectacles." British Journal of Ophthalmology 103, no. 8 (2018): 1106–11. http://dx.doi.org/10.1136/bjophthalmol-2018-312262.

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PurposeTo assess the potential of ready-made (spherical) spectacles (RMS) in meeting the need for refractive correction in visually impaired children in China.MethodsEligible children aged 5–17 years were identified from the three study sites in China. Distance visual acuity was measured with a retroilluminated logarithm of the minimum angle of resolution chart with tumbling E optotypes. Cycloplegic autorefraction was performed on all children using a handheld autorefractor. If uncorrected visual acuity (UCVA) was ≤20/40 in either eye, best corrected visual acuity was measured with subjective refractive error.Results A total of 13 702 children were enumerated from the three studies, with 12 334 (90.0%) having both reliable visual acuity measurements and successful cycloplegia. Among the 12 334 study children, the prevalence of UCVA ≤20/40 in the better seeing eye was 16.4% (95% CI 15.0% to 17.8%), with 91.1% (1843) of these improving by ≥3 lines of visual acuity with refractive correction. Prevalence was 12.7% (95% CI 11.5% to 13.9%) for UCVA <20/50 with 97.4% (1521) improving by ≥3 lines, and 9.38% (95% CI 8.39% to 19.4%) for UCVA ≤20/63 with 98.4% (1138) improving by ≥3 lines. Depending on the severity of visual impairment, 62.8%–64.0% of children could be accommodated with RMS if not correcting for astigmatism of ≤0.75 dioptres and anisometropia of ≤0.50 spherical equivalent dioptres. Approximately 87% of children could be accommodated with RMS if astigmatism and anisometropia limits were increased to ≤1.25 and ≤1.50 dioptres, respectively.ConclusionsRMS could substantially alleviate visual morbidity in two-thirds or more of visually impaired schoolchildren in China. This cost-effective approach to refractive correction might also be useful in low/middle-income countries with poor access to optometric services.

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Müller, Winfried, and Holger Schöneich. "Relations between Visual Acuity, Refraction and the Pattern Reversal Visual-Evoked Cortical Potential in Aphakia." Ophthalmologica 198, no. 2 (1989): 89–94. http://dx.doi.org/10.1159/000309964.

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Alves Pereira, Silvana, and Marcelo Fernandes Costa. "Visual acuity evaluation in children with hydrocephalus: An electrophysiological study with sweep visual evoked potential." World Journal of Neuroscience 02, no. 01 (2012): 36–43. http://dx.doi.org/10.4236/wjns.2012.21006.

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37

Smith, Bradley T., James F. Vander, Carl D. Regillo, and Allen C. Ho. "Evaluation of the Potential Acuity Meter in Predicting Visual Acuity After Photodynamic Therapy for Choroidal Neovascularization." Ophthalmic Surgery, Lasers and Imaging Retina 37, no. 1 (2006): 6–9. http://dx.doi.org/10.3928/1542-8877-20060101-03.

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38

Hung, Chou P., Chloe Callahan-Flintoft, Paul D. Fedele, et al. "Low-contrast Acuity Under Strong Luminance Dynamics and Potential Benefits of Divisive Display Augmented Reality." Journal of Perceptual Imaging 4, no. 1 (2021): 10501–1. http://dx.doi.org/10.2352/j.percept.imaging.2021.4.1.010501.

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Abstract Understanding and predicting outdoor visual performance in augmented reality (AR) requires characterizing and modeling vision under strong luminance dynamics, including luminance differences of 10000-to-1 in a single image (high dynamic range, HDR). Classic models of vision, based on displays with 100-to-1 luminance contrast, have limited ability to generalize to HDR environments. An important question is whether low-contrast visibility, potentially useful for titrating saliency for AR applications, is resilient to saccade-induced strong luminance dynamics. The authors developed an HDR display system with up to 100,000-to-1 contrast and assessed how strong luminance dynamics affect low-contrast visual acuity. They show that, immediately following flashes of 25× or 100× luminance, visual acuity is unaffected at 90% letter Weber contrast and only minimally affected at lower letter contrasts (up to +0.20 LogMAR for 10% contrast). The resilience of low-contrast acuity across luminance changes opens up research on divisive display AR (ddAR) to effectively titrate salience under naturalistic HDR luminance.

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Lauritzen, Lotte, Marianne Hørby Jørgensen, and Kim Fleischer Michaelsen. "Test-Retest Reliability of Swept Visual Evoked Potential Measurements of Infant Visual Acuity and Contrast Sensitivity." Pediatric Research 55, no. 4 (2004): 701–8. http://dx.doi.org/10.1203/01.pdr.0000113769.44799.02.

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40

Kurtenbach, Anne, Hana Langrová, Andre Messias, Eberhart Zrenner, and Herbert Jägle. "A comparison of the performance of three visual evoked potential-based methods to estimate visual acuity." Documenta Ophthalmologica 126, no. 1 (2012): 45–56. http://dx.doi.org/10.1007/s10633-012-9359-5.

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41

Quaid, Patrick, Charlotte Stonier, and Michael J. Cox. "Potential vision testing - the relationship between visual acuity and Vernier acuity in the presence of simulated cataract." Ophthalmic and Physiological Optics 22, no. 6 (2002): 469–81. http://dx.doi.org/10.1046/j.1475-1313.2002.00051.x.

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SMIDDY, WILLIAM E., MARTIN L. THOMLEY, ROBERT W. KNIGHTON, and WILLIAM J. FEUER. "USE OF THE POTENTIAL ACUITY METER AND LASER INTERFEROMETER TO PREDICT VISUAL ACUITY AFTER MACULAR HOLE SURGERY." Retina 14, no. 4 (1994): 305–9. http://dx.doi.org/10.1097/00006982-199414040-00003.

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43

Uy, Harvey S., and Victor Michael R. Munoz. "Comparison of the potential acuity meter and pinhole tests in predicting postoperative visual acuity after cataract surgery." Journal of Cataract & Refractive Surgery 31, no. 3 (2005): 548–52. http://dx.doi.org/10.1016/j.jcrs.2004.05.052.

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Vianya-Estopa, Marta, William A. Douthwaite, Charlotte L. Funnell, and David B. Elliott. "Clinician versus potential acuity test predictions of visual outcome after cataract surgery." Optometry - Journal of the American Optometric Association 80, no. 8 (2009): 447–53. http://dx.doi.org/10.1016/j.optm.2008.11.011.

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45

Heinrich, Sven P., David Marhöfer, and Michael Bach. "“Cognitive” visual acuity estimation based on the event-related potential P300 component." Clinical Neurophysiology 121, no. 9 (2010): 1464–72. http://dx.doi.org/10.1016/j.clinph.2010.03.030.

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46

Zhou, Peng, Ming-Wei Zhao, Xiao-Xin Li, et al. "A new method of extrapolating the sweep pattern visual evoked potential acuity." Documenta Ophthalmologica 117, no. 2 (2007): 85–91. http://dx.doi.org/10.1007/s10633-007-9095-4.

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Ernest-Nwoke, I. O., M. O. Ozor, U. Akpamu, and M. O. Oyakhire. "Relationship between Body Mass Index, Blood Pressure, and Visual Acuity in Residents of Esan West Local Government Area of Edo State, Nigeria." Physiology Journal 2014 (August 19, 2014): 1–5. http://dx.doi.org/10.1155/2014/510460.

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Aim. To study the relationship between body mass index (BMI) and blood pressure (BP) on visual acuity among apparently healthy residents of Ekpoma, Esan West Local Government Area of Edo State, Nigeria. Methodology. This is a cross-sectional descriptive study among 225 subjects (ages of 18–35 years) from whom BP, body weight, and height were collected. Visual acuity was measured using the Snellen chart following standard procedures of number of letters seen at 6-metre distance. The data were then analyzed using SPSS version 17. Results. The sampled population consists of 112 male and 113 female (mean age 31.72±14.2 years). Majority (180) of the respondents had normal visual acuity. However, compared with the respondents with normal BMI (R19.61±1.5; L19.67±1.70), visual acuity of underweight (R18.53±2.30; L18.53±2.70) and obese (R15.68±4.79; L17.73±1.70) were more deviated. Similarly, compared with respondent with normal BP (120–125/80–85 mmHg; R18.00±2.53; L18.07±3.11), hypotensive (R15.5±7.35; L15.00±10.20), and hypertensive (R15.01±21.25; L15.00±11.91) respondents had deviated visual acuity. Conclusion. Abnormal body weight (underweight and obese) and BP (hypotension and hypertension) have potential negative impacts on visual acuity. Based on the observed relationship between weights, BP, and visual acuity, eye examinations can be included as regular screening exercise for abnormal BMI and BP conditions.

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Houlden, David A., Chantal A. Turgeon, Nathaniel S. Amyot, et al. "Intraoperative Flash Visual Evoked Potential Recording and Relationship to Visual Outcome." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 46, no. 3 (2019): 295–302. http://dx.doi.org/10.1017/cjn.2019.4.

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ABSTRACT:Objective: To determine the relationship between intraoperative flash visual evoked potential (FVEP) monitoring and visual function. Methods: Intraoperative FVEPs were recorded from electrodes placed in the scalp overlying the visual cortex (Oz) after flashing red light stimulation delivered by Cadwell LED stimulating goggles in 89 patients. Restrictive filtering (typically 10–100 Hz), optimal reject window settings, mastoid reference site, total intravenous anesthetic (TIVA), and stable retinal stimulation (ensured by concomitant electroretinogram [ERG] recording) were used to enhance FVEP reproducibility. Results: The relationship between FVEP amplitude change and visual outcome was determined from 179 eyes. One eye had a permanent intraoperative FVEP loss despite stable ERG, and this eye had new, severe postoperative visual dysfunction. Seven eyes had transient significant FVEP change (>50% amplitude decrease that recovered by the end of surgery), but only one of those had a decrease in postoperative visual acuity. FVEP changes in all eight eyes (one permanent FVEP loss plus seven transient FVEP changes) were related to surgical manipulation. In each case the surgeon was promptly informed of the FVEP deterioration and took remedial action. The other eyes did not have FVEP changes, and none of those eyes had new postoperative visual deficits. Conclusions: Our FVEP findings relate to visual outcome with a sensitivity and specificity of 1.0. New methods for rapidly acquiring reproducible FVEP waveforms allowed for timely reporting of significant FVEP change resulting in prompt surgical action. This may have accounted for the low postoperative visual deficit rate (1%) in this series.

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Gracheva, Maria A., Anna A. Kazakova, Dmitry F. Pokrovskiy, and Igor B. Medvedev. "Visual Acuity Charts: Analytical Review, Basic Terms." Annals of the Russian academy of medical sciences 74, no. 3 (2019): 192–99. http://dx.doi.org/10.15690/vramn1142.

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Bronchial asthma (BA) and obesity are one of the major modern problem, requiring the development of an effective therapeutic strategy. The frequent combination of these diseases in one patient indicates the general pathophysiological mechanisms and future study for targeted drug exposure are needed. The endocannabinoid system is involved in a variety of physiological and pathological processes and can be considered as a general mechanism and a potential therapeutic target in asthma and obesity, the receptors of the system are expressed in many central and peripheral tissues. This signal system modulates the functions of the autonomic nervous system, immune system and microcirculation, plays an important role in the regulation of energy balance, metabolism of carbohydrates and lipids. The main research aimed at studying the functioning of this system was focused on neurology and psychiatry, while numerous scientific data demonstrate the importance of the participation of this system in the pathogenesis of other diseases. In particular, this system is involved in the mechanisms of obesity. The role of the endocannabinoid system in the pathogenesis of asthma is actively studied. The wide prevalence of the endocannabinoid signaling system and its regulatory role in the body opens up prospects for therapeutic effects in the treatment of asthma and obesity, as well as the possible phenotype of asthma, combined with obesity. The review is devoted to modern ideas about endocannabinoids, their receptors, mechanisms of action and their role in the pathophysiology of asthma and obesity. The therapeutic prospects and difficulties associated with the use of endocannabinoids and phytocannabinoids in medicine are discussed.

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Vaughan, C. E., and S. Hobson. "Reducing Late-Life Dependence Resulting from Declining Visual Acuity." Journal of Visual Impairment & Blindness 84, no. 7 (1990): 370–72. http://dx.doi.org/10.1177/0145482x9008400705.

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This article reports on a project in 39 counties of rural Missouri to screen and provide low vision devices and rehabilitation services to elderly persons with declining visual acuity. A concomitant goal was to establish low vision resource centers in nursing homes and congregate sites for elderly persons. Two significant results of the project were the high level of interest in and use of the low vision resource centers and the dissemination of information on visual loss to potential clients, the public, and local professionals.

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