The purpose of this study was to assess the causes of optic disc oedema and their systemic associations and to study the various clinical presentations of optic disc oedema.This is a retrospective observational study which was conducted at Department of Ophthalmology, JLN Medical College, Ajmer. All patients who reported to OPD with Optic disc oedema during the study period (February2020 to August 2021) were evaluated. Complete ophthalmic examination included visual acuity, anterior segment examination using slit lamp, fundus examination using direct and indirect Ophthalmoscope and 90 Dioptre lens, B-scan for optic nerve sheath diameter (ONSD) and OCT for retinal nerve fibre layer thickness (RNFL) measurement. fundus photography was also done. Investigations like complete blood test, Visual field testing using perimetry, computed tomography scan and magnetic resonance imaging were done as and when indicated. Total 80 optic disc oedema cases were included in our study. Out of 80 cases, 44(55%) and 36(45%) were males and females respectively. Different causes of optic disc oedema were found to be papilloedema 48 cases (60%), optic neuritis 13 cases (16.25%), NA-AION 9 cases (11.25%), CRVO 3 cases (3.75%), diabetic papillopathy 2 cases (2.5%), traumatic optic neuropathy 2 cases (2.5%) respectively. In 3 cases (3.75%) cause could not be detected (idiopathic). The most common cause was papilloedema, followed by optic neuritis and NA- AION