@entity231 and XXXX : screening for treatable @entity989 .

@entity1 @entity66 @entity231 @entity6 @entity2479 @entity3467 @entity2296 @entity1939 @entity989 @entity5564 @entity1020 @entity1624 @entity413
@entity6 causes @entity231 and certain physical changes in the lens. The @entity6 lens is larger than the non- @entity6 and shows greater light scatter and fluorescence. Both hyperglycaemia and lowering of blood @entity413 case refractive changes and @entity3467 is the most common. @entity1624 ' juvenile @entity231 associated with hyperglycaemia is now rare. It has an osmotic mechanism. @entity6 is a risk factor for @entity231 in adults which is duration dependent, more frequent in @entity1 and leads to earlier surgery. It resembles @entity6 . Extracapsular @entity231 extraction is the method of choice for @entity6 with a better visual result and less risk of @entity2296 . A posterior chamber implant may still permit @entity2479 if necessary. @entity6 is still the leading cause of @entity1939 in the working age group. The beneficial effect of photocoagulation has been shown by randomized controlled trials to be long-lasting for both @entity989 and @entity1020 . Therefore there is a need for screening, especially for those with @entity66 which may be present without symptoms. A knowledge of risk factors will enhance detection rate with duration as the strongest determinant for @entity989 . Any screening modality should be highly sensitive as well as specific. The role of different professionals as potential screeners should be considered. Adequate provisions include facilities for checking vision and for dimming ambient lighting. @entity5564 and a good ophthalmoscope light will increase detection rate. The use of a 45 degrees non-mydriatic camera is unlikely to supplant the use of an ophthalmoscope as a single field is likely to miss important lesions. A 60 degrees camera may confer a large enough field and the use of transparencies will provide magnification when films are projected but the camera is more difficult to use. A list of features chosen by a recent study to characterize sight-threatening @entity989 is included and their presence indicates the need for referral to an ophthalmic clinic for treatment or close observation.
