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Corresponding Author

Amr Ali Mohamed Fayez Ali

Document Type

Original Article

Abstract

Background: Precisely determining the power of the intraocular lens (IOL) is crucial to providing the best possible visual results after cataract surgery. Various devices and formulas may be used, such as the Haggis formula or the Hoffer Q method, which combines the measurement of anterior chamber depth (ACD) using the IOL Master.

Aim of the Work: This research aims to compare the accuracy of preoperative IOL power calculations measured by IOL Master (which performs a specific hypermetropic formula) with applanation ultrasonic biometry in cataracts of hypermetropic eyes.

Patients and Methods: Two groups of hypermetropic cataract surgery patients were evaluated: one using preoperative lens measurement (IOLM) and another utilizing A-scan biometry. The groups' keratometry, axial length, ACD, and postoperative refraction were compared.

Results: There was a significant disparity in keratometry measures between the A-scan and IOLM groups, with the latter showing significantly higher values. There was also a significant variation in axial length and ACD among the two data sets. There was also significant variation in postoperative refraction. Importantly, when comparing IOLM calculations to A-scan, a larger percentage of individuals could attain postoperative emetropia utilizing the former.

Conclusion: In hypermetropic cataract patients, IOLM demonstrated superiority in predicting optimal axial length and refractive outcomes towards emetropia or near emetropia compared to conventional A-scan biometry.

Keywords

Hypermetropic cataract; intraocular lens; biometry; A-scan; IOL Master

Subject Area

Ophthalmology

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