стадии заболевания близорукости

As speech has gone about glasses it is possible to allocate two their kinds: sunglasses and glasses with optical lenses for correction of those or other infringements of sight. 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...