Age-related changes in the human visual system and prevalence of refractive conditions in patients attending an eye clinic

Abstract

Best corrected visual acuity began to decrease after the 50s, while changes in the blur component were not patent until the 60s to 70s. This could be explained by the poorer optical quality of the human eye in adulthood and elderly persons. Clinically, these changes could be attributed to changes in ocular astigmatism and have an impact on the best visual acuity achievable with optical compensation.

The Cataract National Dataset electronic multicentre audit of 55 567 operations: when should IOLMaster biometric measurements be rechecked?

“…In contrast to cross-sectional studies of the general population, mostly reporting an increase in K mean , reduction in AL, negative shift in J 0 or similar refractive changes, [29][30][31][32][33]35,36 this study did not find any significant age-related changes. However, being cross-sectional and only including cataractous eyes, the influence of cohort effects and selection bias cannot be excluded, so not much weight can be placed on this.…”

“…[26][27][28][29][30][31][32][33] That there were no significant differences between left and right eyes is not unexpected. The finding that males had longer AL and flatter K mean perhaps reflects the difference in stature between the sexes.…”

Method for Adapting the Grayscale Standard Display Function to the Aging Eye

“…[18], demonstrating acuity loss beyond age 60, at a rate of 2 lines per decade in decimal acuity. The authors do not discuss this fact, but it can be supposed that acuity was measured at a typical optometrist distance (approximately 5 m).…”

Optical power distribution of refractive and aspheric multifocal contact lenses: Effect of pupil size

“…This condition is clinically reported between 40 and 45 years of age [1,2] and is considered to be one of the two most common human ocular afflictions [3]. In fact, Holden et al [4] predicted that there were around 1 billion presbyopes globally in 2005.…”