Description
This article is from the Vision and Eye
Care FAQ, by grants@research.canon.com.au (Grant Sayer) with
numerous contributions by others.
1.5 What is Presbyopia ?
Presbyopia describes the condition whereby the amplitude of accommodation,
or ability to focus on objects at near, decreases with increasing age.
It is corrected by a different prescription for reading, which is additive to
the normal spectacle correction used for distance vision.
Some recent research indicates that presbyopia may be caused by structural
changes in the tendons and elastic fibres of the posterior ciliary body. The
age related increase in fibrillar material could cause decreased compliance
of the posterior insertion of the ciliary muscle.
For more details see
Tamm E., Lutjen-Drecoll E., Jungkunz W., & Rohen J.W., "Posterior attachment
of ciliary muscle in young, accommodating old presbyopic monkeys."
Invest. Ophthal & Vis. Sci. 1991 Apr;32(5):1678-92
URL: http://www.west.net/~eyecare/presbyopia.html
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health, vision, eye care, contact lenses, spectacles, eyecare, prescriptions, sunglasses, surgery
