Accommodative Fluctuations, Lens Tension, and Ciliary Body Thickness in Children
نویسندگان
چکیده
منابع مشابه
Ciliary body thickness and refractive error in children.
PURPOSE To determine whether ciliary body thickness (CBT) is related to refractive error in school-age children. METHODS Fifty-three children, 8 to 15 years of age, were recruited. CBT was measured from anterior segment OCT images (Visante; Carl Zeiss Meditec, Inc., Dublin, CA) at 1 (CBT1), 2 (CBT2) and 3 (CBT3) mm posterior to the scleral spur. Cycloplegic refractive error was measured with ...
متن کاملAccommodative ciliary body and lens function in rhesus monkeys, I: normal lens, zonule and ciliary process configuration in the iridectomized eye.
PURPOSE The underlying causes of presbyopia, and the functional relationship between the ciliary muscle and lens during aging are unclear. In the current study, these relationships were studied in rhesus monkeys, whose accommodative apparatus and age-related loss of accommodation are similar to those in humans. METHODS Centripetal ciliary body and lens equator movements were measured during a...
متن کاملHistoanatomical study of the lens and ciliary body in ostrich eye
In the present study, the lenses and ciliary bodies of 20 ostrich eyes were studied macroscopically and microscopically. The histological slides were studied after staining by hematoxylin and eosin, Verhoeff, Van Gieson, and periodic acid-Schiff (PAS). Posterior surface of lens was more convex than its anterior surface. The average lens diameter and thickness were respectively measured as 1.43 ...
متن کاملSurgical intervention and accommodative responses, I: centripetal ciliary body, capsule, and lens movements in rhesus monkeys of various ages.
PURPOSE To determine how surgically altering the normal relationship between the lens and the ciliary body in rhesus monkeys affects centripetal ciliary body and lens movement. METHODS In 18 rhesus monkey eyes (aged 6-27 years), accommodation was induced before and after surgery by electrical stimulation of the Edinger-Westphal nucleus. Accommodative amplitude was measured by coincidence refr...
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ژورنال
عنوان ژورنال: Optometry and Vision Science
سال: 2009
ISSN: 1040-5488
DOI: 10.1097/opx.0b013e3181a7b3ce