Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement

Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement

Introduction: This paper aimed to describe variation in apical corneal curvature between unilateral primary pterygium and normal adults utilizing simulated-K and corneal irregularity measurement corneal indices. Methods: A total of 100 participants comprise 50 unilateral primary pterygium eyes from...

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Main Authors: Hilmi, Mohd Radzi, Musa, Nur Hidayah, Mohd Kamal, Khairidzan, Che Azemin, Mohd Zulfaezal, Maruziki, Nur Nabilah, Norazmar, Nur Ain, Nasir, Mardhiah Syazwani
Format: Article
Language:English
Published: International Islamic University Malaysia (IIUM) 2019
Subjects:
RE Ophthalmology
Online Access:http://irep.iium.edu.my/77590/
http://irep.iium.edu.my/77590/1/CHANGES%20IN%20APICAL%20CORNEAL%20CURVATURE%20IN%20UNILATERAL%20PRIMARY%20PTERYGIUM%20AND%20NORMAL%20ADULTS%20USING%20SIMULATED-K%20AND%20CORNEAL%20IRREGULARITY%20MEASUREMENT.pdf
id iium-77590
recordtype eprints
spelling iium-775902020-01-09T07:04:11Z http://irep.iium.edu.my/77590/ Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement Hilmi, Mohd Radzi Musa, Nur Hidayah Mohd Kamal, Khairidzan Che Azemin, Mohd Zulfaezal Maruziki, Nur Nabilah Norazmar, Nur Ain Nasir, Mardhiah Syazwani RE Ophthalmology Introduction: This paper aimed to describe variation in apical corneal curvature between unilateral primary pterygium and normal adults utilizing simulated-K and corneal irregularity measurement corneal indices. Methods: A total of 100 participants comprise 50 unilateral primary pterygium eyes from 50 patients and 50 normal adults were recruited in this study. Diagnosis and classification of primary pterygium were done by a consultant ophthalmologist (KMK). Standard optometric examinations were performed in all participants. Simulated-K (SimK) and corneal irregularity measurement (CIM) was objectively measured using a corneal topographer. Three measurements based on best image quality for SimK and CIM were taken by single operator in a same visit. Difference for both SimK and CIM parameters between primary pterygium and normal groups were determined via independent T-test. Results: Overall mean and standard deviation (n = 120) of SimK and CIM were found higher in primary pterygium group (9.06 ± 4.49 D and 11.48 ± 3.12) compared to normal (1.63 ± 0.67 D and 0.62 ± 0.24) respectively. Independent T-test results showed significance difference in SimK and CIM values between primary pterygium groups and normal (both P< 0.001). Conclusions: Both SimK and CIM corneal indices can be an important tool in describing and predicting changes on the corneal curvature due to pterygium progression. However, it is worth to note that the detectability of changes in anterior corneal curvature is limited to 5 mm of central corneal curvature. International Islamic University Malaysia (IIUM) 2019-08-09 Article PeerReviewed application/pdf en http://irep.iium.edu.my/77590/1/CHANGES%20IN%20APICAL%20CORNEAL%20CURVATURE%20IN%20UNILATERAL%20PRIMARY%20PTERYGIUM%20AND%20NORMAL%20ADULTS%20USING%20SIMULATED-K%20AND%20CORNEAL%20IRREGULARITY%20MEASUREMENT.pdf Hilmi, Mohd Radzi and Musa, Nur Hidayah and Mohd Kamal, Khairidzan and Che Azemin, Mohd Zulfaezal and Maruziki, Nur Nabilah and Norazmar, Nur Ain and Nasir, Mardhiah Syazwani (2019) Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement. International Journal Of Allied Health Sciences (IJAHS), 3 (2). pp. 588-594. E-ISSN 2600-8491
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
topic RE Ophthalmology
spellingShingle RE Ophthalmology
Hilmi, Mohd Radzi
Musa, Nur Hidayah
Mohd Kamal, Khairidzan
Che Azemin, Mohd Zulfaezal
Maruziki, Nur Nabilah
Norazmar, Nur Ain
Nasir, Mardhiah Syazwani
Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement
description Introduction: This paper aimed to describe variation in apical corneal curvature between unilateral primary pterygium and normal adults utilizing simulated-K and corneal irregularity measurement corneal indices. Methods: A total of 100 participants comprise 50 unilateral primary pterygium eyes from 50 patients and 50 normal adults were recruited in this study. Diagnosis and classification of primary pterygium were done by a consultant ophthalmologist (KMK). Standard optometric examinations were performed in all participants. Simulated-K (SimK) and corneal irregularity measurement (CIM) was objectively measured using a corneal topographer. Three measurements based on best image quality for SimK and CIM were taken by single operator in a same visit. Difference for both SimK and CIM parameters between primary pterygium and normal groups were determined via independent T-test. Results: Overall mean and standard deviation (n = 120) of SimK and CIM were found higher in primary pterygium group (9.06 ± 4.49 D and 11.48 ± 3.12) compared to normal (1.63 ± 0.67 D and 0.62 ± 0.24) respectively. Independent T-test results showed significance difference in SimK and CIM values between primary pterygium groups and normal (both P< 0.001). Conclusions: Both SimK and CIM corneal indices can be an important tool in describing and predicting changes on the corneal curvature due to pterygium progression. However, it is worth to note that the detectability of changes in anterior corneal curvature is limited to 5 mm of central corneal curvature.
format Article
author Hilmi, Mohd Radzi
Musa, Nur Hidayah
Mohd Kamal, Khairidzan
Che Azemin, Mohd Zulfaezal
Maruziki, Nur Nabilah
Norazmar, Nur Ain
Nasir, Mardhiah Syazwani
author_facet Hilmi, Mohd Radzi
Musa, Nur Hidayah
Mohd Kamal, Khairidzan
Che Azemin, Mohd Zulfaezal
Maruziki, Nur Nabilah
Norazmar, Nur Ain
Nasir, Mardhiah Syazwani
author_sort Hilmi, Mohd Radzi
title Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement
title_short Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement
title_full Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement
title_fullStr Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement
title_full_unstemmed Changes In Apical Corneal Curvature In Unilateral Primary Pterygium And Normal Adults Using Simulated-K And Corneal Irregularity Measurement
title_sort changes in apical corneal curvature in unilateral primary pterygium and normal adults using simulated-k and corneal irregularity measurement
publisher International Islamic University Malaysia (IIUM)
publishDate 2019
url http://irep.iium.edu.my/77590/
http://irep.iium.edu.my/77590/1/CHANGES%20IN%20APICAL%20CORNEAL%20CURVATURE%20IN%20UNILATERAL%20PRIMARY%20PTERYGIUM%20AND%20NORMAL%20ADULTS%20USING%20SIMULATED-K%20AND%20CORNEAL%20IRREGULARITY%20MEASUREMENT.pdf
first_indexed 2023-09-18T21:49:26Z
last_indexed 2023-09-18T21:49:26Z
_version_ 1777413669693423616

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