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IN THE NAME OF ALLAH WHO IS MOST MERCIFUL AND GRACIOUS
This is dislocation or subluxation of crystalline lens. It is also divided into congenital and acquired. Congenital causes include familial, et pupilae, aniridia. Also include in it are systemic diseases like marphan syndrome, homocystineuria and weil mershasani syndrome.
causes
causes
Acquired
Trauma.
Pseudoexfoliation.
Inflammation, e.g. chronic cyclitis, syphilis.'
Hypermature cataract.
Large eye, e.g. high myopia, buphthalmos.
Anterior uveal tumours.
without systemic association
familial ectopia lentis
ectopia lentis et pupillae
aniridia
with systemic association
marphan syndrome
homocystinurea
weil merchasani syndrome
Treatment
Treatment
Treatment
If anteriorly dislocated, with inverse glaucoma, the patient must be treated as an emergency. Lens removal is indicated after controlling the intraocular pressure. If the lens is subluxated, the extent is assessed andrefraction through the aphakic portion is performed to give the best possible correction.If the lens is posteriorly dislocated, with uveitis, removal is indicated; if there is no uveitis no treatment is required. If the vision is poor due to excessive lenticular astigmatism or presence of the lens edge in the visual axis,removal of the lens is required. If any of these deformities cause great visual disability, treatment by lens aspiration or lensectomy is advisable.
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