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Morphological changes 2 1/2 years after extracapsular cataract extraction with implantation of a posterior chamber lens
Author(s) -
Næser Kristian,
Nielsen Niels Elkjær,
Hansen Tom Eggert
Publication year - 1990
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1990.tb01919.x
Subject(s) - cataract extraction , ophthalmology , medicine , lens (geology) , optics , physics
Morphological changes and lens position were examined in 51 eyes of 51 patients 25 to 37 (mean 31) months after extracapsular cataract extraction with implantation of a posterior chamber lens in the ciliary sulcus. Ocular morphology was compared to a previously published examination of the same eyes performed 4 months after surgery. The anterior chamber depth, lens position and the position of the posterior lens capsule had remained unchanged. ‘Iris bulging’, i.e. a gonioscopically visible slight impression of the iris overlying the lens haptics, had increased from 0 to 42%, iridal transillumination defects from 34 to 46%, and pigment dispersion in the chamber angle from 46 to 72%. Twenty‐four percent of the eyes had developed significant, capsulotomy‐requiring opacification of the posterior lens capsule. We draw the following conclusions: The posterior chamber lens and the posterior lens capsule have reached their permanent positions by the fourth postoperative month. Implantation of a posterior chamber lens in the ciliary sulcus constitutes a constant stimulus for structural changes of the iris with subsequent dispersion of pigment on neighbouring ocular structures.