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Ectopia lentis |
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ectopia /ec·to·pia/ (ek-to´pe-ah) [Gr.] malposition, especially if congenital. ectopia cor´dis congenital displacement of the heart outside the thoracic cavity. ectopia len´tis abnormal position of the lens of the eye. ectopia pupil´lae conge´nita congenital displacement of the pupil.
Ectopia lentis Dislocation of the lens of the eye. It is one of the most important single indicators in diagnosing Marfan syndrome. Mentioned in: Marfan Syndrome
ectopia lentis, n a displacement of the lens of the eye.
ectopia [L.] ectopy. ectopia cordis congenital displacement of the heart outside the thoracic cavity. ectopia lentis
congenital displacement of the lens away from its usual site attached to the ciliary body. Occurs as one of a series of defects in an inherited syndrome of cattle. The other defects are irideremia, microphakia and cataract. The calves are normal in other respects. luxation of the lens Pathological and complete dislocation of the lens relative to the pupil. If the luxation is incomplete it is called subluxation of the lens (or dislocation or ectopia lentis). Subluxation is one of the causes of monocular diplopia. If the luxation is complete the eye becomes markedly hyperopic and is unable to accommodate. Luxation occurs in contusion of the globe, in many ocular (e.g. buphthalmos) and other diseases (e.g. syphilis) or it can be inherited (e.g. the bilateral, symmetrical, superior subluxation commonly found in Marfan's syndrome or homocystinuria). It is sometimes associated with ectopic pupils and keratoconus. Unless there are complications (e.g. secondary glaucoma) or monocular diplopia the lens is left in place and management is optical. (Fig. L21) See corectopia; iridodonesis; pupillary block. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Physical findings in Marfan syndrome Skeletal Arm span > height Arachnodactyly Ligament laxity Kyphosis Pectus excavatum High arched palate Cardiovascular Aortic insufficiency murmur Mitral valve prolapse Ophthalmologic Lens dislocation Myopia Homocystinuria, a disease of methionine metabolism, is also associated with a high incidence lens dislocation (commonly anterior displacement), as well as thromboembolic disorders and mental retardation. |
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