Delhi Journal of Ophthalmology

Central Retinal Artery Occlusion Secondary To High Altitude Exposure

Diviyanshu Nadda1, Jyoti Sheoran2, Saurabh Sachar3, Anurag Narula4
1Department of Ophthalmology, Command Hospital Chandimandir, Panchkula, Haryana, India.
2Department of Ophthalmolgy, Military Hospital Dehradun, Uttarakhand, India.
3Department of Radiodiagnosis, Consultant in Shri Mahant Indiresh Hospital Dehradun, Uttarakhand, India.
4Department of Ophthalmology, Consultant, VMMC and Safdarjung Hospital, New Delhi, India.

Editor-in-Chief, Delhi Journal of Ophthalmology, Dr R.P.Centre, AIIMS.


Corresponding Author:

Jyoti Sheoran (MS, Ophthalmology)
Department of Ophthalmolgy, 
Military Hospital Dehradun, Uttarakhand, India.
Email : joesheoran111@gmail.com


Received: 16-JAN-2022 Accepted: 04-JUN-2022 Published Online: 25-JUN-2022
DOI: https://dx.doi.org/10.7869/djo.771

Abstract
CRAO can be considered as an ocular analogue of stroke or an ocular equivalent of acute myocardial infarction. We present a case report of a 32-years-old serving soldier posted at high altitude area with no premorbidities who presented with symptoms of sudden painless loss of vision in the left eye (LE). Best-corrected visual acuity in the LE was PL+ with PR inaccurate . A relative afferent pupillary defect grade IV was observed in the LE. Ocular fundus examination of LE was suggestive of central retinal artery occlusion. Systemic evaluation revealed Steno occlusive disease of bilateral carotids L>R. Haematological investigations revealed increased haemoglobin. Raised haemoglobin due to long stay in high altitude area is tantamount to a sustained inflammatory state that results in endothelial dysfunction by causing hypercoagulable state culminating in  small calibre vessel blockage. 

Keywords :CRAO, Altitudinal Exposure, Retinal Vasculature