A Study of the Relation between Ocular Axial Length and Central Retinal Vein Occlusion at a Tertiary Care Hospital in Mumbai

Abstract

superficial deep intraretinal in all four of the retina associated variable of retinal venous engorgement and tortuosity, optic disc swelling, cotton wool ABSTRACT Aim: This study aims to assess the association between the ocular axial length (AL) and the pathogenesis of central retinal vein occlusion (CRVO) at a tertiary care hospital. Methods: This study included patients of unilateral CRVO. Informed consent was obtained, followed by comprehensive history taking, ophthalmic evaluation, systemic investigations as per protocol, and ocular investigations including OCT/FFA, depending on the requirement of the patient and duration of disease. Fifteen women and 15 men with a mean age of 64.98 years were selected. ALs of the affected (study group) and unaffected eye (control group) were measured by A-scan ultrasonography (US). Results: The mean AL of affected eyes in males was 23.0267 mm and that in unaffected eyes was 23.191 mm ( P = 0.000). The mean AL of affected eyes in females was 23.0131 mm and that in unaffected eyes was 23.030 mm ( P = 0.000). The ALs of affected eyes were shorter than those of unaffected eyes ( P = 0.000). These differences were statistically significant. The Cronbach’s α found is 0.925, which suggests a strong correlation between AL and CRVO. A comparison was also made between the ALs and CRVO based on the gender, and no statistical difference was found. Conclusion: Our study confirms the existence of shorter ALs in the affected eye of patients of CRVO on comparison with the unaffected eye. It also confirms that this difference is statistically significant in the total population and in each gender.