Author(s): T.R. Anuradha1, S. Venkatesh2, B. Radhakrishnan3, Thangerani Raajeseharan4, Aparna R5
There are very few studies on the common causes and clinical features of optic disc swelling in Asian population. Therefore, this study is to determine the clinical manifestations and aetiology of optic disc oedema.
MATERIALS AND METHODS
All patients presenting with unilateral or bilateral disc oedema who attended the Ophthalmology OP, Stanley Medical College, were included in the study. Evaluation of BCVA, colour vision, anterior segment, visual fields by Octopus field analyser, detailed fundus and optic nerve by direct ophthalmoscope/90D/indirect ophthalmoscope was done in all subjects. Fundus photograph was taken in selected cases.
The result of the study revealed that optic disc swellings can be due to varied causes. This study included 50 patients, out of which, 47 had bilateral presentation and 3 had unilateral presentation. The most common cause was found to be idiopathic intracranial hypertension. Cerebral venous thrombosis was found to be the second most common cause. All of them had bilateral presentation.
IIH and cerebral venous thrombosis should be considered in the main diagnosis when patients with bilateral optic disc swelling present to ophthalmology clinics. Detailed history taking, examination and imaging tests should also be performed as indicated.