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Intraocular lens power calculation by measuring axial length with partial optical coherence and ultrasonic biometry in Middle East children

Poster Details

First Author: M.Kamel EGYPT

Co Author(s):    M. Ramadan   A. Swalium   M. Omar              

Abstract Details

Purpose:

: To compare the achieved refractive outcomes of patients undergoing cataract surgery with intraocular lens (IOL) power calculation performed by conventional immersion ultrasound (US) or partial coherence interferometry (PCI).

Setting:

Faculty of medicine Ain Shams University Cairo Egypt

Methods:

Prospective, comparative case series. Include 120 eyes Patients undergoing cataract surgery were randomly divided in two groups with regard to the IOL power calculation method. Group 1 had calculations performed by PCI (IOL Master; Carl Zeiss Meditec), while US was used in Group 2 (Ultrascan; Alcon), using the Holladay 1 formula. Differences between target and achieved refractions were then compared.

Results:

Our study comprised 120eyes from79patients. Biometry with PCI was used in 50 eyes. US was used in 70eyes. Mean age of patients in the PCI Group was 69.8�Â�±13.1 years and 70.0�Â�±9.3in the US Group (P=0.7165). Mean axial length measured by PCI was 23.22�Â�±1.00 mm and that by US was 23.22�Â�±1.06 mm (P=0.9110). Mean absolute error in the PCI group was 0.15�Â�±0.33 D and that in the US group was 0.26�Â�±0.48 D (-1.05 - 1.76).All eyes in the PCI group and 94.3% of those in the US group were within 1.0 D of the planned refraction

Conclusions:

Although both PCI and US yielded good prediction in IOL power calculation, the PCI group tended to show better more accuracy and improved refractive and visual outcome

Financial Disclosure:

NONE

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