scholarly journals Neural Compensation for Long-term Asymmetric Optical Blur to Improve Visual Performance in Keratoconic Eyes

2010 ◽  
Vol 51 (7) ◽  
pp. 3835 ◽  
Author(s):  
Ramkumar Sabesan ◽  
Geunyoung Yoon
Keyword(s):  
Visual Performance ◽  
Optical Blur ◽  
Neural Compensation

scholarly journals Neural compensation mechanisms following long-term adaptation to severe optical defects

2017 ◽  
Vol 17 (7) ◽  
pp. 37
Author(s):  
Antoine Barbot ◽  
Krystel R Huxlin ◽  
Duje Tadin ◽  
Geunyoung Yoon
Keyword(s):  
Compensation Mechanisms ◽  
Neural Compensation

Long-term Impact of Treated Congenital Toxoplasmosis on Quality of Life and Visual Performance

2011 ◽  
Vol 30 (7) ◽  
pp. 597-600 ◽  
Author(s):  
François Peyron ◽  
Justus G. Garweg ◽  
Martine Wallon ◽  
Elodie Descloux ◽  
Muriel Rolland ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Congenital Toxoplasmosis ◽  
Visual Performance ◽  
Long Term Impact

scholarly journals Prediction Error Stabilization and Long-Term Standard Results with a Monofocal Intraocular Lens

Vision ◽  
2022 ◽  
Vol 6 (1) ◽  
pp. 5
Author(s):  
Beatríz Macías-Murelaga ◽  
Gonzaga Garay-Aramburu ◽  
Roberto Bergado-Mijangos ◽  
Daniel Coello-Ojeda ◽  
Itziar Ozaeta ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
High Power ◽  
Prediction Error ◽  
Visual Performance ◽  
Posterior Capsular Opacification ◽  
Myopic Shift ◽  
Hyperopic Shift ◽  
The Stability

The aim of this study was to assess the stability and differences between objective (O-Rx) and subjective (S-Rx) refraction for the assessment of the prediction error (PE). A secondary aim was to report the results of a monofocal intraocular lens (IOL). 100 subjects were included for whom S-Rx and O-Rx were obtained for all visits, and for visual performance, posterior capsular opacification incidence and Nd:YAG rates at 12 months. Either S-Rx and O-Rx showed a hyperopic shift from 1 to 6 months (p < 0.05) and stabilization after 6 months. S-Rx was related with the axial length (rho = −0.29, p = 0.007), obtaining a major tendency towards hyperopia in short eyes implanted with high-power IOLs. O-Rx showed a myopic shift in comparison to S-Rx (p < 0.05). This resulted in a decrease of the number of eyes in ±0.50 D and ±1.00 D from 79 to 67% and from 94 to 90%, respectively. The median (interquartile range) uncorrected and corrected visual acuities were 0.1 (0.29) and 0 (0.12) logMAR, respectively, and seven eyes required Nd:YAG capsulotomy at 12 months. Some caution should be taken in PE studies in which O-Rx is used or S-Rx is measured in a 1-month follow-up. Constant optimization should be conducted for this IOL after S-Rx stabilization.

Functional phenotyping of successful aging in long-term memory: Preserved performance in the absence of neural compensation

Hippocampus ◽  
2010 ◽  
pp. n/a-n/a ◽  
Author(s):  
Emrah Düzel ◽  
Hartmut Schütze ◽  
Andrew P. Yonelinas ◽  
Hans-Jochen Heinze
Keyword(s):  
Successful Aging ◽  
Long Term Memory ◽  
Term Memory ◽  
Neural Compensation

scholarly journals A 12-week lutein supplementation improves visual function in Chinese people with long-term computer display light exposure

2009 ◽  
Vol 102 (2) ◽  
pp. 186-190 ◽  
Author(s):  
Le Ma ◽  
Xiao-Ming Lin ◽  
Zhi-Yong Zou ◽  
Xian-Rong Xu ◽  
Ying Li ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Visual Function ◽  
Healthy Subjects ◽  
Light Exposure ◽  
Statistical Significance ◽  
Visual Performance ◽  
Beneficial Effects ◽  
Glare Sensitivity

We aimed to examine the effect of different doses of lutein supplementation on visual function in subjects with long-term computer display light exposure. Thirty-seven healthy subjects with long-term computer display light exposure ranging in age from 22 to 30 years were randomly assigned to one of three groups: Group L6 (6 mg lutein/d, n 12); Group L12 (12 mg lutein/d, n 13); and Group Placebo (maltodextrin placebo, n 12). Levels of serum lutein and visual performance indices such as visual acuity, contrast sensitivity and glare sensitivity were measured at weeks 0 and 12. After 12-week lutein supplementation, serum lutein concentrations of Groups L6 and L12 increased from 0·356 (sd 0·117) to 0·607 (sd 0·176) μmol/l, and from 0·328 (sd 0·120) to 0·733 (sd 0·354) μmol/l, respectively. No statistical changes from baseline were observed in uncorrected visual acuity and best-spectacle corrected visual acuity, whereas there was a trend toward increase in visual acuity in Group L12. Contrast sensitivity in Groups L6 and L12 increased with supplementation, and statistical significance was reached at most visual angles of Group L12. No significant change was observed in glare sensitivity over time. Visual function in healthy subjects who received the lutein supplement improved, especially in contrast sensitivity, suggesting that a higher intake of lutein may have beneficial effects on the visual performance.

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