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Burn Г. are thermal and chemical. Thermal burns are caused by fire fused by metal, boiling water and нр. Heavy thermal burns can conduct to некрозу конъюнктивы, a cornea and склеры with the subsequent formation{education} of cicatricial turbidity of a cornea and сращений between centuries and an eyeball. Chemical burns Г. are caused гл. обр. Acids and alkalis. Acids cause more superficial defeat, alkalis have deep damaging{injuring} an effect. Are especially heavy ожопг not slaked известью. Very much the great value at chemical burns Г. has rendering the urgent help to the victim. Immediate plentiful washing Г. by water is necessary. Then Г. the patient should be examined carefully, necessarily having turned out веки. If there are particles of metal, to exhaust and other alien bodies, them it is necessary to remove cautiously a damp wadded tampon alien bodies. Then pawn for веки disinfectant ointments (30 % сульфацид-натриевая) then the patient direct to the oculist. Подробнее...

Diagnosis Д. can be put during definition of visual acuity at research by glasses. Degree Д. is defined{determined} by strongest of the collective lenses, giving the best sight. Visual acuity at Д. weak and average degrees can be normal; at Д. high degrees (5,0-10,0 D and is higher) visual acuity is lowered, despite of correction by glasses. Correction Д. is made by the convex glasses strengthening a refraction (fig. 2). At absence of correction by glasses at far-sighted easily arises астенопия and quite often the converging squint develops. Подробнее...