[Calculations for intraocular lenses].

The authors deal with the postoperative dioptric deviation from the calculated optic potency of the emetropic intraocular lens, using formulae SRK II, SRK/T and Holladay's formula. Within the range +/- 1.5 D the deviation varied in 84% of the operated eyes where the intraocular lens was assessed according to formula SRK II; in 76% when formula SRK/T was used and in 74% when Holladay's formula was used. The authors give also an account of possible sources of errors during measurement, calculation and evaluation of results.