| 摘要 |
FIELD: ophthalmology. SUBSTANCE: correction of optical sight defects is accomplished by means of (i) system of upper and lower mirrors which, because of relative position and calculated forms (plane, sphere, aspherical forms) of reflecting surfaces, provide required individual image correction; and (ii) system of indicated mirrors in combination with, installed in the same frames, long-sight lenses or sun-protection lenses, intact or with cut to observe image on lower mirror. EFFECT: achieved required correction. 4 cl, 2 dwgt
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