Correlation between visual acuity and cognitive functions
- Sackler Faculty of Medicine, Goldschleger Eye institute, Sheba Medical Center, Tel Aviv University, Tel Hashomer, Israel
- Correspondence to Dr Sivan M Elyashiv, Sackler Faculty of Medicine, Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer 52621, Israel;
- Received 11 August 2013
- Revised 30 September 2013
- Accepted 10 October 2013
- Published Online First 29 October 2013
A possible association between visual acuity (VA) and dementia was investigated in 2716 subjects who were aged between 53 and 102 at first visit and had varying degrees of dementia. Better VA was found to be significantly correlated with a lower dementia level (person coefficient range 0.146–0.261 over 10 years of follow-up, all correlations are significant, p<0.0001) as well as with a higher global cognitive score (person coefficient range −0.254 to −0.318 over 10 years of follow-up, all correlations are significant, p<0.0001), a grade encompassing 19 different cognitive tests. This correlation remained significant after adjustment for age, years of education, gender, use of ophthalmic drugs and years of follow-up.