title: VEP measurement of the amplitude of accommodation.
abstract: The amplitude of accommodation was measured in 44 subjects by visually evoked potentials (VEP) in response to negative lenses. It was found that about two-thirds of the subjects responded to the lenses by increasing their accommodation in order to minimise blur, while the other one-third accepted the blur and accommodated very little. The amplitude was also determined subjectively (push-up method) and it correlated very well with the VEP measurement (r = 0.91). It is therefore suggested that VEP constitutes a feasible method of assessing objectively the amplitude of accommodation.
mesh_terms: D000065:Accommodation, Ocular; D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D014793:Visual Cortex / Q000502:physiology*