$Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil$

Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil

Purpose: This study was designed to study the correlation between refractive error, axial length, corneal curvature, AL/CR ratio and lens power among first year undergraduate students in UiTM Puncak Alam, Selangor. Methods: In this cross sectional study, 203 of first year undergraduate students in U...

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Main Author:	Mohd Halil, Amalina
Format:	Thesis
Language:	English
Published:	2016
Subjects:	Higher Education Graduate students Refraction and errors of refraction and accommodation
Online Access:	https://ir.uitm.edu.my/id/eprint/22294/1/TD_AMALINA%20MOHD%20HALIL%20HS%20B%2016_5.pdf
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id	my-uitm-ir.22294
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spelling	my-uitm-ir.222942018-12-26T06:33:59Z Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil 2016 Mohd Halil, Amalina Higher Education Graduate students Refraction and errors of refraction and accommodation Optometry. Opticians. Eyeglasses Purpose: This study was designed to study the correlation between refractive error, axial length, corneal curvature, AL/CR ratio and lens power among first year undergraduate students in UiTM Puncak Alam, Selangor. Methods: In this cross sectional study, 203 of first year undergraduate students in UiTM Puncak Alam, Selangor of mean age 20.78±0.93 years old volunteed themselves to participate as subjects. They underwent 3 procedures which were subjective refraction without cycloplegia by using Logmar chart, corneal radius (CR) of curvature by using NIDEK Corneal Topography and axial length (AL) by using TOMEY Biometer AL-100. The subjects were characterized according to these 3 variables to establish correlation between them. After determining the value of CR and AL, the ratio were calculated by dividing axial length with corneal radius to use in the analysis. Individuals with a history of ocular trauma, ocular surgery and take medication for systemic or ocular disease were excluded. Result: Out of 400 targeted subjects, 200 were included in the analysis. 71.5% of the subject were myopia (<-0.50D), 22.5% were emmetropia (>-0.50D - < +0.50 D) and 6% were hyperopia (<+0.50D). The correlation coefficient between spherical equivalent SE and CR, and AL/CR ratio were 0.187, and 0.829, respectively. The correlation between AL and CR was 0.253. The correlation between lens power and AL/CR ratio was 0.185. The r2 value of 0.687 suggests that 68.7% of the variance in refractive error can be accounted for the variation in AL/CR ratio. Mean AL/CR ratio was 3.12±0.18. Conclusion: The correlation between SE and AL/CR ratio was significantly stronger as compared to with AL and CR alone. 2016 Thesis https://ir.uitm.edu.my/id/eprint/22294/ https://ir.uitm.edu.my/id/eprint/22294/1/TD_AMALINA%20MOHD%20HALIL%20HS%20B%2016_5.pdf text en public degree Universiti Teknologi MARA, Selangor, Puncak Alam Campus Faculty of Health Science
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Higher Education Graduate students Refraction and errors of refraction and accommodation Higher Education
spellingShingle	Higher Education Graduate students Refraction and errors of refraction and accommodation Higher Education Mohd Halil, Amalina Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil
description	Purpose: This study was designed to study the correlation between refractive error, axial length, corneal curvature, AL/CR ratio and lens power among first year undergraduate students in UiTM Puncak Alam, Selangor. Methods: In this cross sectional study, 203 of first year undergraduate students in UiTM Puncak Alam, Selangor of mean age 20.78±0.93 years old volunteed themselves to participate as subjects. They underwent 3 procedures which were subjective refraction without cycloplegia by using Logmar chart, corneal radius (CR) of curvature by using NIDEK Corneal Topography and axial length (AL) by using TOMEY Biometer AL-100. The subjects were characterized according to these 3 variables to establish correlation between them. After determining the value of CR and AL, the ratio were calculated by dividing axial length with corneal radius to use in the analysis. Individuals with a history of ocular trauma, ocular surgery and take medication for systemic or ocular disease were excluded. Result: Out of 400 targeted subjects, 200 were included in the analysis. 71.5% of the subject were myopia (<-0.50D), 22.5% were emmetropia (>-0.50D - < +0.50 D) and 6% were hyperopia (<+0.50D). The correlation coefficient between spherical equivalent SE and CR, and AL/CR ratio were 0.187, and 0.829, respectively. The correlation between AL and CR was 0.253. The correlation between lens power and AL/CR ratio was 0.185. The r2 value of 0.687 suggests that 68.7% of the variance in refractive error can be accounted for the variation in AL/CR ratio. Mean AL/CR ratio was 3.12±0.18. Conclusion: The correlation between SE and AL/CR ratio was significantly stronger as compared to with AL and CR alone.
format	Thesis
qualification_level	Bachelor degree
author	Mohd Halil, Amalina
author_facet	Mohd Halil, Amalina
author_sort	Mohd Halil, Amalina
title	Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil
title_short	Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil
title_full	Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil
title_fullStr	Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil
title_full_unstemmed	Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil
title_sort	correlation between refractive errors, axial length, corneal curvatures and al/cr ratio among first year undergraduate student in uitm puncak alam, selangor / amalina mohd halil
granting_institution	Universiti Teknologi MARA, Selangor, Puncak Alam Campus
granting_department	Faculty of Health Science
publishDate	2016
url	https://ir.uitm.edu.my/id/eprint/22294/1/TD_AMALINA%20MOHD%20HALIL%20HS%20B%2016_5.pdf
_version_	1783733805138313216

Correlation between Refractive Errors, Axial Length, Corneal Curvatures and AL/CR ratio among first year undergraduate student in UiTM Puncak Alam, Selangor / Amalina Mohd Halil

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