Silicone intraocular lens compression and double lens implants in diseasedeyes

Purpose To assess the outcomes of double lens implants in hyperoptic eyes w ith associated pathology. Method Double lens implants were used in 4 eyes of 4 patients each with a d ifferent ophthalmic or neuro-ophthalmic disease. Biometry was performed in the standard contact fashion and lens power formulae used included SRK/T, H olladay and Hoffer Q. Results Average spherical equivalent refraction improved from +6.875 D to 0.38 D. Absolute average prediction error was greatest for SRK/T (2.65 D) a nd least for Holladay (1.73 D). Refractive surprises were influenced by the underlying disease process. One patient showed central lens compression. Conclusion Underlying disease can produce biometry errors. Structural ophth almic or neurological disease is not a contraindication to the use of doubl e lens implants. Double lens implants are useful to correct refractive erro r in the presence of underlying disease.