Pseudophakic accommodation? A study of the stability of capsular bag supported, one piece, rigid tripod, or soft flexible implants.
Open Access
- 1 January 1990
- journal article
- research article
- Published by BMJ in British Journal of Ophthalmology
- Vol. 74 (1), 22-25
- https://doi.org/10.1136/bjo.74.1.22
Abstract
A group of pseudophakic patients was investigated to determine whether their implants shift along an anteroposterior axis under different conditions of ciliary muscle stimulation. There was no statistically significant change in refraction after either pilocarpine or cyclopentolate administration. A change in anterior chamber depth between the position after pilocarpine and that after cyclopentolate was found. It appears that rigid posterior chamber implants do move backwards on ciliary muscle relaxation, but by a maximum 0.25 mm. This is not thought to represent a mechanical threat to ocular health. It is also not enough to account for the apparent accommodative ability of some pseudophakic patients. The possible causes for this phenomenon are discussed.Keywords
This publication has 12 references indexed in Scilit:
- Accommodation of an Endocapsular Silicone Lens (Phaco-Ersatz ) in the Nonhuman PrimateOphthalmology, 1987
- Phaco-Ersatz: Cataract surgery designed to preserve accommodationAlbrecht von Graefes Archiv für Ophthalmologie, 1986
- The ciliary body in accommodation.1986
- Clinical evaluation of six intraocular lens calculation formulasAmerican Intra-Ocular Implant Society Journal, 1985
- Apparent Accommodation in Pseudophakic Eyes after Implantation of Posterior Chamber Intraocular LensesAmerican Journal of Ophthalmology, 1983
- Planned myopic astigmatism as a substitute for accommodation in pseudophakiaAmerican Intra-Ocular Implant Society Journal, 1981
- OPTICAL PACHYMETRY OF THE ANTERIOR CHAMBER A methodological study of errors of measurement using Haag Streit 900 instrumentsActa Ophthalmologica, 1974
- The OphthalmetronAmerican Journal of Ophthalmology, 1974
- Comparison of the accommodative effects of carbachol and pilocarpine with reference to accommodative esotropia.British Journal of Ophthalmology, 1974
- The elastic constants of the human lensThe Journal of Physiology, 1971