Calculation of monofocal IOLs using 4 formulas and the total corneal power in 4 mm zone

Session Details

Session Title: Cataract
Session Date/Time: Saturday 16/02/2019 | 08:30-11:00
Paper Time: 10:48
Venue: Hall Trianti

First Author: A.Matveeva RUSSIA
Co Author(s): S. Shukhaev  A. Zagorulko  Y. Novak           

Abstract Details

Purpose:

The purpose of this study was to estimate the stability of hitting the target refraction of three types of monofocal IOL (AcrySof IQ (SN60WF), CT Aspira-aAy and Asphina 409M) using total corneal power in 4 mm zone (Pentacam).

Setting:

The St.-Petersburg Branch of the S. Fyodorov Eye Microsurgery State Institution

Methods:

This retrospective randomized study included 208 patients (208 eyes), who underwent microcoaxial phacoemulsification. The calculation algorithm of optical power of IOLs was based on 4 formulas: Holladay 1, Haigis, Hoffer Q, SRK/T. Depending on type of the implanted IOL patients were divided into 3 groups: AcrySof IQ (SN60WF) - 42, Aspira-aAy - 98, Asphina 409M – 68.

Results:

The percentage of eyes with prediction errors between ±0.25 diopter were 76%, 77.5%, 77.9%, between ±0.5 diopter 85.7%, 92.8%, 89.7%, between ±1.0 diopter 92.8%, 97.9%, 98.5%, and between 2.0 diopter 97.6%, 100%, 100% after implantation of IQ, Aspira and Asphina respectively. ME and MAE were the following: -1.29, +0.01, -0.13 and +\- 0.244, +\- 0.159, +\- 0.169 in IOL IQ, Aspira and Asphina respectively. They were no statistically significant differences between IOLs (p>0.05).

Conclusions:

All three types of monofocal IOL have shown high precision of hit in a target refraction using total corneal power (4 mm zone) during calculation.

Financial Disclosure:

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