𝘌𝘤𝘵𝘰𝘱𝘪𝘢 𝘓𝘦𝘯𝘵𝘪𝘴 ● Displacement or malposition of the crystalline lens of the eye ● When it remains in the patellar fossa- Subluxated ● Completely displaced from the patellar fossa- Dislocated ● Subluxation of lens signifies partial or complete zonular compromise
𝐄𝐭𝐢𝐨𝐥𝐨𝐠𝐲: ● Trauma (>50%) ● Congenital- Simple ectopia lentis and Ectopia lentis et Pupillae ● Systemic Disorders- Marfan’s, Homocystinuria, Weil-Marchesani Syndrome, Sulfite Oxidase deficiency, Hyperlysinemia etc. ● Consecutive/Spontaneous- Buphthalmos, high myopia, staphyloma, intraocular tumours, hypermature cataract 𝘔𝘢𝘳𝘧𝘢𝘯’𝘴 : 𝘚𝘶𝘱𝘦𝘳𝘰𝘵𝘦𝘮𝘱𝘰𝘳𝘢𝘭 𝘴𝘶𝘣𝘭𝘶𝘹𝘢𝘵𝘪𝘰𝘯 𝘏𝘰𝘮𝘰𝘤𝘺𝘴𝘵𝘪𝘯𝘶𝘳𝘪𝘢: 𝘐𝘯𝘧𝘦𝘳𝘰𝘯𝘢𝘴𝘢𝘭 𝘴𝘶𝘣𝘭𝘶𝘹𝘢𝘵𝘪𝘰𝘯 𝐒𝐲𝐦𝐩𝐭𝐨𝐦𝐬: ● Decreased distance visual acuity due to astigmatism/ lenticular myopia ● Poor near vision (loss of accommodative power) ● Anisometropia ● Glare ● Monocular diplopia ● Red painful eye in some cases 𝐒𝐢𝐠𝐧𝐬 𝐨𝐟 𝐙𝐨𝐧𝐮𝐥𝐚𝐫 𝐝𝐚𝐦𝐚𝐠𝐞: ● Phacodonesis ● Iridodonesis ● Vitreous prolapse ● Lens subluxation 𝐒𝐮𝐛𝐭𝐥𝐞 𝐬𝐢𝐠𝐧𝐬 𝐨𝐟 𝐳𝐨𝐧𝐮𝐥𝐚𝐫 𝐰𝐞𝐚𝐤𝐧𝐞𝐬𝐬: ● Visibility of lens equator during eccentric gaze ● Decentered nucleus in primary position ● Iridolenticular gap ● Changes in contour of lens periphery ● Focal iridodonesis 𝐈𝐧𝐝𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐟𝐨𝐫 𝐒𝐮𝐫𝐠𝐞𝐫𝐲: ● In younger children if there is significant or progressive dislocation or if amblyopia cannot be effectively treated by conventional means such as glasses, contact lens, and/or patching ● For older children and adults, if poor visual acuity is attributed to subluxated lens and is not amenable to spectacle correction or if the lens is threatening to dislocate anteriorly or posteriorly ● Lens induced uveitis/ Lens induced glaucoma/ Lens in anterior chamber ● Significant cataract www.ophthalmobytes.com Image from Rajan Eye Care Hospital #ophthalmology #ophthal #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency #lens #cataract #subluxatedcataract #marfans #homocystinuria #ophthalmologist
Comments