Session Title: Refractive II
Session Date/Time: Saturday 04/02/2012 | 08:30-11:00
Paper Time: 09:57
Venue: Grand Ballroom
First Author: : S.Siregar INDONESIA
Co Author(s): : j. hutauruk
Purpose:
To increase the accuracy for ultrasound immersion biometry through A constant personalization
Setting:
university of indonesia
Methods:
48 consecutive cataract operations were included in retrospective study with acrylic hydrophilic lens (US IOL) implantation. Intraocular lens power was calculated using ultrasound immersion (Axis II). The predictions were calculated using SRK-T method. All calculations were optimized in retrospect to account for systemic errors.Target refraction, intended refraction, and differences between both were measured. RESULTS The difference between target and intended refraction in this study was -0.30. The number of predictions within ± 0.25 D, ±0.50 D and ± 1.00 D of the expected outcomes was 29.16%, 56.25% and 85.41% using ultrasound.
Conclusions:
The accuracy of IOL power calculation can be significantly improved using calibrated axial lentg readings and personalized A-constant. The recommend A constant for physiological eye in Indonesia is 117.3 using US IOL.
Financial Disclosure:
No
