title: The objective assessment of cataract.
abstract: The objective assessment of cataract is central to any epidemiological or therapeutic study of cataract. The objective methods consist of: 1: A resolution target projection ophthalmoscope (Acuity scope) for the estimation of potential visual acuity. 2: The Oxford Clinical Cataract Classification and Grading System, which records and quantifies the features of the lens that are visible at the slit-lamp microscope. This system is essential since photographic methods cannot define the morphology of cataract. 3: Two photographic methods; slit-lamp photography and retro-illumination photography are needed to give a comprehensive statement about the amount of cataract. The negatives are measured by computerised image analysis systems.
authors.forename: N A
authors.initials: NA
authors.lastname: Brown
authors.forename: A J
authors.initials: AJ
authors.lastname: Bron
authors.forename: W
authors.initials: W
authors.lastname: Ayliffe
authors.forename: J
authors.initials: J
authors.lastname: Sparrow
authors.forename: A R
authors.initials: AR
authors.lastname: Hill
mesh_terms: D002386:Cataract / Q000145:classification* / Q000473:pathology; D006801:Humans; D007908:Lens, Crystalline / Q000473:pathology; D009887:Ophthalmoscopy; D010781:Photography; D014792:Visual Acuity