[Formula for estimating the optic force of elastic intraocular lenses]

Formula for estimating the optic force of intraocular lenses made from elastic materials has been tried in 106 patients. The formula takes account of forward deflection of the elastic intraocular lens in the posterior chamber of the eye. The proposed method for estimation more than threefold decreases the mean error in estimation of optic force of elastic intraocular lenses in comparison with calculations with the use of known formulas. The mean error is 0.78 +/- 0.13 diopters, which corresponds to modern requirements to the accuracy of formulas for calculating the optic force of intraocular lenses.