Age-related course of visual acuity obtained with ETDRS 2000 charts in persons with healthy eyes

Purpose: To investigate the age-related course of best-corrected visual acuity in healthy eyes. Methods: Two hundred participants (400 eyes) 25 to 74 years of age (114 females, 86 males) were investigated, 20 per 5-year age group. Best-corrected visual acuity was measured monocularly with the ETDRS 2000 charts at a distance of 4 m (Precision Vision, Woodstock, IL, USA). Strict exclusion and termination criteria were used. Results: Visual acuity did not change between ages 25 and 54 years (mean of the better eyes, − 0.18 ± 0.05 logMAR). A significant age-related break-point in visual acuity was found at the ages of 55–59 years. For all age groups, the overall mean visual acuity was − 0.15 ± 0.06 logMAR for the better eyes and − 0.13 ± 0.06 logMAR for the worse eyes. There was no difference between the right and left eyes (− 0.14 ± 0.06 logMAR). The visual acuity was better in the right eye in 29% (n = 58) of the participants, better in the left eye in 32% (n = 64), and the same in both eyes in 39% (n = 78). From ages 25 to 64 years, neither the better nor the worse eye had a visual acuity worse than 0.0 logMAR. Conclusion: Best-corrected visual acuity was constantly high until the age of 54 years. An age-related break-point appeared at 55 to 59 years of age. Until age 64, a minimal angle of resolution smaller than 1 min of arc (visual acuity better 0.0 logMAR) can be expected in healthy eyes.