Luxation postérieure bilatérale spontanée du cristallin

Luxation postérieure bilatérale spontanée du cristallin

Nous rapportons le cas d´une patiente âgée de 89 ans, ayant comme antécédent de l´hypertension artérielle, sans notion de traumatisme oculaire, chez qui l´examen ophtalmologique a retrouvé une acuité visuelle à compte les doigts bilatéralement. Et l´examen biomicroscopique a retrouvé une cornée clai...

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Bibliographic Details
Main Authors: Narjisse Taouri, Ouafae Cherkaoui
Format: Article
Language:English
Published: PAMJ 2020-06-01
Series:PAMJ Clinical Medicine
Subjects:
we report the case of a 89-year old female patient with a history of high blood pressure without ocular trauma. ophthalmological examination showed bilateral visual acuity of counting fingers. bilaterally
biomicroscopy found clear cornea
good anterior chamber
exfoliation material deposit at the edge of the pupil . in the left eye
crystalline lens was posteriorly subluxated but still visible in the pupillary area (a). right eye fundus examination revealed dislocation of the crystalline lens into the vitreous (b). the diagnosis of spontaneous bilateral dislocation of the crystalline lens secondary to pseudoexfoliation syndrome was established. data from the literature highlight that pseudoexfoliation syndrome is an age-related systemic disease associated with elastic microfibrillopathy due to altered loxl1 gene. this results in the production and accumulation of fibrillar deposits within the extracellular matrix of several organs. this syndrome is most often bilateral and asymmetric. clinical manifestations include cataract
glaucoma
bad pupillary dilatation
phacodonesis or spontaneous subluxation of the crystalline lens into the vitreous due to zonular instability. it has been reported in the literature that this zonular instability may be due to disruption secondary to the deposit of fibrillary material at the pre-equatorial zonule insertion. other studies have reported that this may be intrinsic
given that
in affected eyes
zonular fiber examination shows differences in elastic fibers with respect to unaffected eyes.
Online Access: https://www.clinical-medicine.panafrican-med-journal.com/content/article/3/71/pdf/71.pdf

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https://www.clinical-medicine.panafrican-med-journal.com/content/article/3/71/pdf/71.pdf

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