IIUM Repository

Corneal curvature measurements utilizing a new swept-source optical coherence tomography Tomey OA-2000® and comparison with IOL Master® 500 in pterygium patients

Hilmi, Mohd Radzi and Mohd. Kamal, Khairidzan and Che Azemin, Mohd Zulfaezal and Ithnin, Mohd. Hafidz and Md Mustafa, Md Muziman Syah and Yusof, Firdaus and Ahmad, Norsham (2018) Corneal curvature measurements utilizing a new swept-source optical coherence tomography Tomey OA-2000® and comparison with IOL Master® 500 in pterygium patients. Sains Medika, 9 (1). ISSN 2085-1545 E-ISSN 2339-093X (In Press)

[img] PDF - Submitted Version
Restricted to Repository staff only

Download (181kB) | Request a copy

Abstract

Introduction: Corneal curvature (CC) is an important anterior segment parameter. This study compared CC measurements conducted with two optical devices in pterygium eyes. Methods: Sixty pterygium eyes of 30 patients were enrolled in this study. CC was measured three times with the optical biometer and topography-keratometer Tomey OA-2000 (Tomey Corporation, Nagoya, Japan), then with partial optical coherence interferometry (PCI) IOL Master 500 (Carl Zeiss Meditec, Dublin, CA) and data were statistically analysed. Results: The measurements revealed in a mean CC of 43.86 ± 1.57 D with Tomey OA-2000 and 43.84 ± 1.55 D with IOL Master. Distribution of data is normal, and no significance difference in CC values was detected (P = 0.952) between the two devices. Correlation between CC measurements was highly significant (r = 0. 99; P < 0.0001). The mean difference of CC values between devices was 0.017 D and 95% limit of agreement was -0.088 to 0.12. Duration taken for measurements with the standard biometer IOL Master was longer (55.17 ± 2.24 seconds) than with Tomey OA-2000 (39.88 ± 2.38 seconds) in automatic mode. Duration of manual measurement with Tomey OA-2000 in manual mode was shorter (28.57 ± 2.71 seconds). Conclusion: In pterygium eyes, CC measured with Tomey OA-2000 and IOL Master showed similar values, and high correlation was observed between these two devices. This shows that both devices can be used interchangeably. Tomey OA-2000 is better in terms of faster to operate and has its own topography systems.

Item Type: Article (Journal)
Additional Information: 3389/70730
Uncontrolled Keywords: Pterygium; Corneal Curvature; IOL Master 500; Tomey OA-2000; Corneal Topography
Subjects: R Medicine > RE Ophthalmology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Allied Health Sciences > Department of Optometry and Visual Science
Kulliyyah of Medicine > Department of Ophthalmology
Depositing User: Mr. Faizal Hazri Mat Ripin
Date Deposited: 14 Feb 2019 12:56
Last Modified: 14 Feb 2019 12:56
URI: http://irep.iium.edu.my/id/eprint/70730

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year