Photographic investigation of the human lens and cataract.
Slit-image photography of the anterior segment of the eye can provide important information about the dimensions and optical densities of the refractive structures. It is crucial that the slit-image photograph be in perfect focus and that the slit-beam cut in exactly the same section (along the optic axis) on each occasion. The equipment, principles and techniques which make such precision slit-imagephotography possible  are discussed. Clinical and research applications, especially regarding the human lens and cataract, are summarized.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002386:Cataract / Q000175:diagnosis* / Q000503:physiopathology; D002648:Child; D006801:Humans; D007908:Lens, Crystalline / Q000033:anatomy & histology* / Q000254:growth & development / Q000503:physiopathology; D008875:Middle Aged; D009885:Ophthalmology / Q000379:methods*; D010781:Photography / Q000379:methods*