The role of the epithelium in intraocular lens and corneal power calculation.

IF 2.8 3区医学 Q1 OPHTHALMOLOGY Ophthalmic and Physiological Optics Pub Date : 2025-02-03 DOI:10.1111/opo.13443

Jascha A Wendelstein, David A Atchison, Damien Gatinel, David L Cooke, Achim Langenbucher

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Abstract

Purpose: To investigate the influence of the corneal epithelium on corneal power, particularly in special cases such as post-refractive surgery and keratoconus.

Methods: A retrospective observational study. Measurement data were obtained from a high-resolution anterior segment analyser (CSO MS-39). Corneal curvature and power data, as well as surface height data, were organised in a cylindrical coordinate system. Calculations considered one, two and three refractive surfaces, examining the role of epithelial thickness and stromal curvature.

Results: The effect of the epithelium on corneal power was minimal (<0.1 D) in normal corneas, but it was considerable in keratoconus and post-refractive surgery cases, with differences up to 0.9 D. The effect decreased for larger measurement zones.

Conclusion: Incorporating epithelial thickness and stromal curvature into corneal power calculations is a crucial next step in accurate corneal power and intraocular lens calculation in eyes with previous refractive surgery or keratoconus. This study highlights the need for advanced diagnostic and calculation methods in complex cases.

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来源期刊

Ophthalmic and Physiological Optics 医学-眼科学

CiteScore

5.10

自引率

13.80%

发文量

135

审稿时长

6-12 weeks

期刊介绍： Ophthalmic & Physiological Optics, first published in 1925, is a leading international interdisciplinary journal that addresses basic and applied questions pertinent to contemporary research in vision science and optometry. OPO publishes original research papers, technical notes, reviews and letters and will interest researchers, educators and clinicians concerned with the development, use and restoration of vision.