Comparison of intraocular lens power calculation using the Binkhorst and SRK formulae: a clinical study.

Comparison of results of intraocular lens implants with IOL powers obtained by Binkhorst and SRK Linear Regression formulae was done using various models and brands of intraocular lenses. Of 887 pseudophakic patients. 415 patients received IOL's with their powers calculated for planned emmetropia, by means of theoretic formula devised by R.D. Binkhorst and in the remaining 472 eyes the IOL power was calculated with the SRK Linear Regression method. No significant difference (P < 0.05) was found between visual acuities, obtained with IOL's alone or after postoperative overcorrection of residual refractive errors between the two groups.