[Spectral filters as a method of therapeutic correction].
Spectral filters were used for additional correction of vision in 67 patients: in 15 adults with initial cataracts (intensive yellow filter), 26 children with albinism (yellow-brown filter), 14 children with macular hypoplasia (orange filter), and 12 children with aphakia after removal of congenital cataracts (yellow filter). Selection of the filter density is carried out using a special method including visocontrastometry, examination of sensitivity to lateral light, and study of color perception thresholds. Use of filters resulted in improvement of the vision acuity by 43.5% in patients with initial cataracts, by 10% in those with albinism, by 20% in those with macular hypoplasia, and by 22% in those with aphakia; moreover, an improvement of the frequency-contrast characteristics was observed, as well as a reduction of photophobia, and a reduction of vision amplitude in patients with nystagmus. The possible applications of spectral correction are discussed.
D000328:Adult; D000417:Albinism / Q000628:therapy; D001036:Aphakia, Postcataract / Q000628:therapy; D002386:Cataract / Q000151:congenital / Q000628:therapy; D002648:Child; D003116:Color; D003118:Color Perception; D005139:Eyeglasses; D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D007909:Lenses; D008266:Macula Lutea; D009759:Nystagmus, Pathologic / Q000628:therapy; D012164:Retinal Diseases / Q000628:therapy; D014786:Vision Disorders / Q000628:therapy*; D014792:Visual Acuity
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