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Association of net pterygium tissue mass (dryweight) in determining changes in oculovisual functions and anterior corneal curvature relative to pterygium types

Che Rosli, Noor Syahira and Hilmi, Mohd Radzi and Mohd. Kamal, Khairidzan and Md Mustafa, Md Muziman Syah (2020) Association of net pterygium tissue mass (dryweight) in determining changes in oculovisual functions and anterior corneal curvature relative to pterygium types. International Journal of Allied Health Sciences, 4 (1). pp. 1042-1048. E-ISSN 2600-8491

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Abstract

Introduction: Dryweight in pterygium is more towards the fleshy appearance of the fibrous tissue. Aim: The goal of this study was to determine the predictive ability of net pterygium tissue mass (dryweight) on predicting changes in anterior corneal cur-vature and oculovisual functions relative to pterygium types. Methodology: A total of 93 primary pterygium patients who visited an ophthalmology clinic were selected as participants. The net pterygium tissue mass were obtained via freeze dry method sub-sequent to pterygium excision using fibrin glue adhesive method. Best corrected visu-al acuity (BCVA) and contrast sensitivity function (CSF) were measured by using M&S Smart System II as measurement for oculovisual function, while the changes of ante-rior corneal curvature was measured using corneal topography. Results: The mean and standard deviation for BCVA, CSF and SimK were 0.44 ± 0.30 LogMAR, 24.28 ± 17.66 % and 4.64 ± 4.18 D respectively. This study found that the predictive ability of pterygium dryweight with BCVA were strong in Type I and Type III while moderate in Type II with 13.10% (R2 = 0.131, p < 0.05) in Type I. Slight increase trend were noted in both Type II with 53% (R2 = 0.530, p < 0.05) and Type III, with 21.60% (R2 = 0.216, p < 0.05). For CSF, the predictive ability of pterygium dryweight were strong in all types with Type I, Type II and III reported 21.6% (R2 = 0.216, p < 0.05), 31.8% (R2 = 0.318, p < 0.05), 28.9% (R2 = 0.289, p < 0.05) respectively. The predictive ability of pterygium dry-weight for SimK were strong in all types with contribution of 44.7% (R2 = 0.447, p < 0.05), 47.7% (R2 = 0.477, p < 0.05), 39.1% (R2 = 0.391, p < 0.05) respectively. Conclusion: Net pterygium tissue mass (dryweight) is a strong factor in predicting changes of ocu-lovisual functions and anterior corneal curvature in relation to pterygium types.

Item Type: Article (Journal)
Additional Information: 3389/79021
Uncontrolled Keywords: Pterygium, dryweight, best corrected visual acuity, contrast sensitivity function, ante-rior corneal curvature
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: Dr. Md Muziman Syah Md Mustafa
Date Deposited: 23 Feb 2020 01:19
Last Modified: 20 Nov 2020 09:52
URI: http://irep.iium.edu.my/id/eprint/79021

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