Why we need reading-glasses before a zimmer-frame.
Accommodative loss represents the fastest human biological decrement. Why? To examine this, the shape of the eye-lens during accommodation or its relaxation is analysed with special reference to age-related changes. The capsule is viewed as a force transmitter: the distribution of forces along centripetal capsular arcs and the resulting stresses and strains are calculated. The effect of zonular 'shifts' is considered. Age-related accommodative loss can be modelled successfully if changes in mechanical properties are linked to those in lenticular and capsular shape.
Weale
R A
RA
Age Concern Institute of Gerontology, Waterloo Wing, King's College London, Waterloo Rd, SE1 8WA, London, UK. robert.weale@kcl.ac.uk
D000065:Accommodation, Ocular / Q000502:physiology; D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D001696:Biomechanical Phenomena; D002648:Child; D002675:Child, Preschool; D005139:Eyeglasses; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007908:Lens, Crystalline / Q000502:physiology; D008875:Middle Aged; D011305:Presbyopia / Q000503:physiopathology* / Q000628:therapy