J Korean Ophthalmol Soc.  2003 Oct;44(10):2235-2241.

The Analysis of Refractive Errors of AMO Array(R) Multifocal Intraocular Lens with SRK II Formula

• Kim SJ
• Cho SJ
• Tae JS
• Lee MI
• Kim DH
• Lee MJ
• Oh JH

Abstract

PURPOSE
To evaluate the accuracy of the SRK II formula for the AMO Array(R) multifocal intraocular lens (Array lens) power calculation according to axial length. In case of refractive error more than +/- 1.0 diopter (D), we compared the accuracy of the SRK II with that of other formulas. METHODS: Participants were 178 eyes (142 patients) received the Array lens. These were divided into 3 subgroups based on axial length. Group I had 21 eyes of short axial length (less than 22.0 mm). Group II had 133 eyes of average axial length (more than 22.0mm below 24.5mm). Group III had 24 eyes of long axial length (more than 24.5mm). The difference between preoperative predicted refractive value and postoperative manifest refractive value were calculated. We compared the accuracy of the SRK II and that of SRK/T, Holladay formulas in case of refractive error more than +/- 1.0D.
RESULTS
Three eyes (14.2%) in Group I, 14 eyes (10.5%) in group II and 15 eyes (62.5%) in Group III showed refractive errors more than +/- 1.0D. Fifteen eyes (62.5%) in Group III were significantly reduced to 7 eyes (29.1%) with using SRK/T, Holladay formulas.
CONCLUSIONS
SRK II formula had better predictive accuracy in axial length less than 24.5mm with Array lens. But it is better to apply SRK/T or Holladay formulas when axial length is more than 24.5mm.

Keyword

AMO Array(R) multifocal IOL; Holladay; Refractive error; SRK II; SRK/T

MeSH Terms

Lenses, Intraocular*
Refractive Errors*