Abstract

Objective To verify the accuracy of two formula (SRK-T and SRK-II) with clinical data. Methods (1) Performed phacoemulsification with intraocular lens implantation over 43 patients (43 eyes) with cataract and high myopia (axial length≥26.0mm),divided the cases into two groups according to axial lengths. Group A (25 eyes): the axial length 0.05); However,concerned with group B,the mean absolute refractive error is (0.84±0.65 )D under the SRK-T formula while it is (1.42±0.87 )D when using the SRK-II formula, the differ- ence is statistically significant. (P<0.05). (2) With reference to group A, 84% cases have the value difference ≤±0.5D between intraocular lens power under the two formulas; however, concerned with group B, 61.11% cases have the value difference≥±2.0 D between intraocular lens power when using the two formulas. Con- clusion Both the SRK-T formula and the SRK-II formula are applicable to group A; However,compared with the SRK-II formula, the SRK-T formula is more applicable to group B, the results of the SRK-T formula are more accurate. Key words: High myopia; Cataract; Intraocular lens; Theoretical formula

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