Association of different refractive error in parental cousin marriages.
Abstract
OBJECTIVE: To correlate the consanguinity history with different refractive errors in parental cousin marriages, and to find out which component of refractive error is more compromised due to consanguinity.
METHOD: It was an institution based study conducted on 50 patient having consanguinity history and age from 18 years to 40 years.This study explains the association of different refractive error in parental cousin marriages. Distance  (6m) and near  (33cm) visual acuity was measured by using Snellen distance and near visual acuity charts. Results were obtained by asking the patient to fill a semi structured proforma.
RESULTS: Consanguinity is found more in myopic patient as compared to hyperopic patients. Some patients show myopic astigmatism. Mostly patient having consanguinity history show myopia and myopic astigmatism. No case of hypermetropia was seen having consanguinity history. Percentage of refractive error in a total family member having consanguinity history was 68% myopia and 32% astigmatism.
CONCLUSION: Consanguinity is associated with major refractive errors such as myopia and also myopic astigmatism in some cases.
KEYWORDS: Refractive errors, problems due to parental cousin marriages.
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