METHOD FOR DETERMINING OPTIC POWER OF BIFOCAL INTRAOCULAR LENS ZONE PROVIDING NEAR VISION Russian patent published in 1998 - IPC

FIELD: biology. SUBSTANCE: method involves additionally determining distance required for carrying out professional activity of patient. Then optic power is calculated providing near vision from a formula Dn=Dop+1/a n/(l-k) l/(n-kDc), where Dop is the optic power calculated on emmetropia, l is the eye optic axis length, k is the anterior chamber depth, Dc is cornea optic power, a is the distance required for patient to perform professional activity, n is the refraction index of humor and vitreous body. EFFECT: enhanced effectiveness of method; individual anatomic parameter of an eye taken into consideration.