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PubMed · 9368166

Intraocular lens power calculation for microphthalmos.

M Inatomi·K Ishii·R Koide·Y Kora·T Ozawa
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Abstract

PURPOSE: To evaluate the refractive results and accuracy of intraocular lens (IOL) power calculation formulas in eyes with microphthalmos. SETTING: Department of Ophthalmology, Showa University Hospital, Tokyo, Japan. METHODS: The accuracy of IOL power calculated using the SRK, SRK II, S-SRK, SRK/T, Holladay, and Hoffer Q formulas was evaluated in six eyes with axial lengths less than 19.0 mm. RESULTS: Postoperative measurement of refraction showed a tendency toward hypermetropia compared with the refraction predicted by each formula. The best predicted refraction was calculated using the SRK/T formula. The tendency for hyperopic estimation was related to the axial length, particularly in eyes with a shorter axial length. However, there was no relationship between the refractive power of the cornea and the error in the predicted refraction by the SRK/T formula. Two eyes with an IOL power of 30.0 diopters (D) had severe hypermetropia. CONCLUSION: Theoretical formulas were more accurate than empirical ones in eyes with microphthalmos. The severe hypermetropia in the two eyes with a 30.0 D IOL indicates that such patients require a higher IOL power.

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AgedAlgorithmsBiometryEyeHumansLens Implantation, IntraocularLenses, IntraocularMicrophthalmosMiddle AgedOptics and PhotonicsPhacoemulsificationRefraction, OcularReproducibility of ResultsVisual AcuityJournal Article

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M Inatomi, K Ishii, R Koide, Y Kora, T Ozawa. 1997. Intraocular lens power calculation for microphthalmos.. https://doi.org/10.1016/s0886-3350(97)80317-3

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