Accommodative movements of the lens/capsule and the strand that extends between the posterior vitreous zonule insertion zone & the lens equator, in relation to the vitreous face and aging

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
M A CroftP L Kaufman

Abstract

To elucidate the dynamic accommodative movements of the lens capsule, posterior lens and the strand that attaches to the posterior vitreous zonule insertion zone and posterior lens equator (PVZ INS-LE), and their age-related changes. Twelve human subjects (ages 19-65 years) and 12 rhesus monkeys (ages 6-27 years) were studied. Accommodation was induced pharmacologically (humans) or by central electrical stimulation (monkeys). Ultrasound biomicroscopy was used to image intraocular structures in both species. Surgical procedures and contrast agents were utilized in the monkey eyes to elucidate function and allow visualization of the intraocular accommodative structures. Human: The posterior pole of the lens moves posteriorly during accommodation in proportion to accommodative amplitude and ciliary muscle movement. Monkey: Similar accommodative movements of the posterior lens pole were seen in the monkey eyes. Following extracapsular lens extraction (ECLE), the central capsule bows backward during accommodation in proportion to accommodative amplitude and ciliary muscle movement, while the peripheral capsule moves forward. During accommodation the ciliary muscle moved forward by ~1.0 mm, pulling forward the vitreous zonule and the...Continue Reading

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Citations

Jan 16, 2016·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Leon N DaviesW Neil Charman
Dec 2, 2017·Scientific Reports·Kehao WangBarbara K Pierscionek
May 1, 2019·Investigative Ophthalmology & Visual Science·Paul L KaufmanMary Ann Croft
Mar 20, 2018·Biomedical Optics Express·Yu-Cherng ChangFabrice Manns
Aug 16, 2017·Eye and Vision·AnnMarie HipsleyBrad Hall
Oct 19, 2017·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·W Neil Charman
Jan 26, 2021·Biomechanics and Modeling in Mechanobiology·Katherine R KnausSilvia S Blemker
Sep 1, 2021·Investigative Ophthalmology & Visual Science·Kilhwan ShonJoo Young Yoon
Sep 1, 2021·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Iulen Cabeza-GilBegoña Calvo
Apr 27, 2021·Journal of Glaucoma·Jessica A Scott, Jeffrey M Liebmann

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