Original Research Article
Year: 2020 | Month: June | Volume: 7 | Issue: 6 | Pages: 476-480
A Comparative Study of Effect of Glucose on the Lateral Phoria of Myopes and Hyperopes
Megwas, A.U., Okolie, F.U., Nwawume, I.C., Azuamah, Y.C., Ugwoke, G.I., Daniel-Nwosu, E.I., Okorie, M.E., Ibe, C.N., Ogbonna, U.C.
Department of Optometry, Federal University of Technology, Owerri, Nigeria
Corresponding Author: Megwas, A.U
ABSTRACT
Phoria is a misalignment of the eyes that only appears when binocular viewing is broken. This study was carried out to compare the effect of glucose on the lateral phoria of myopes and hyperopes. Clinical tests conducted on the subjects include taking their case history, visual acuity, external eye examination, retinoscopy and lateral phoria test. The blood glucose level was measured using the Accu-check glucometer. Subjects with a normal fasting blood glucose level were selected and given 12.5g (females) and 19g (males) of glucose for oral ingestion. The lateral phoria was repeated after 30, 60 and 90 minutes of glucose intake. A total of 50 subjects were used for this study. Twenty-seven were myopes and 23 were hyperopes. Results showed that before glucose intake, the mean phoria value for myopes at distance was0.19 exo. After 30 minutes, the value became 0.19 eso. After 60 minutes, the value was0.37 exo. After 90 minutes, the value became 0.89 exo. The mean near phoria value of the myopes before glucose intake was 3.81 exo. After 30 minutes, the value was 4.74 exo. After 60 minutes, the value was6.44 exo. After 90 minutes, the value was 5.15 exo. The mean distance phoria value of the hyperopes before glucose intake was 0.83 exo. After 30 minutes, the value became 2.35 exo. After 60 minutes, the value was 0.96 exo. After 90 minutes, the value became 0.96 exo. The mean near phoria value of the hyperopes before glucose intake was 3.65 exo. After 30 minutes, the value became 5.61 exo. After 60 minutes, the value was 4.83 exo. The changes in the mean phoria values for myopes and hyperopes at both distance and near were not statistically significant (P>0.05). Further studies on the effect of glucose on other visual functions were recommended.
Keywords: Phoria, Glucose, Myopia, Hyperopia, Exophoria, Esophoria
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