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ORIGINAL ARTICLE
Year : 2017  |  Volume : 4  |  Issue : 4  |  Page : 104-108

The effect of spherical refractive error on tear volume


1 Department of Optometry and Visual Sciences, Faculty of Optometry and Visual Sciences, Al-Neelain University, Khartoum, Sudan
2 Department of Optometry and Visual Sciences, Associate Professor of Optometry, Faculty of Optometry and Visual Sciences, Al-Neelain University, Khartoum, Sudan

Correspondence Address:
Dr. Reem Hassan Abd Almajeed
Department of Optometry, Faculty of Optometry and Visual Sciences, AlNeelain University, Khartoum
Sudan
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DOI: 10.4103/bijo.bijo_14_18

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Background: Dry eye disease (DED) is the most common multifactorial annoying ocular surface disorder, of various ocular symptoms, ranging from eye discomfort, dryness, itching, irritation, and foreign body sensation up to noticeable visual disturbance. Eventually ends with reducing quality of life. Optical refractive quality might deteriorate in these DED individuals, especially in hot-dry-windy climates like in Sudan. Aim: This study aims to determine the influence of spherical refractive errors (REs) on the tear volume and DED. Materials and Methods: In a comparative cross-sectional hospital-based study 90 (n = 90) participants were included; all were free from any ocular or systemic diseases and not using contact lenses. They were of equal numbers of hypermetropes and myopes of mixed gender; males and females, with their ages range between (18-28) years. The mean ages in both groups of RE states were 21.97 ± 2.35 and 22.55 ± 3.29 hypermetropes and myopes, respectively. The study was performed at Makkah Eye complex (MEC), Khartoum, Sudan, from May to July 2015; where the participants were recruited from the general refraction clinics at MEC. All individuals were subjected to the full eye examination. The Schirmer's test was used for all the participants. SPSS statistical analysis program was used to analyze the data. Results: Dry eye was found in 26.6% on hypermetropic patients and 1.1% myopic patients. In this study, the spherical REs showed a significant difference between males (16.6%) and females (12%) P = 0.001. Conclusion: REs may be considered to be one of the risk factors to cause dry eye condition. Correcting RE may reduce the risk factor of dry eye, and that may reduce its prevalence.


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