In the era of OCT, is detection of early papilledema using Frisen scale grading valid? A study to evaluate the role of spectral domain-OCT in papilloedema among the population of hilly areas of Northern India. - Sharma, Shreyanshi; Tuli, Rajeev; Ojha, Sushil; Saraswat, Neeraj; Sharma, Gaurav (TNOA Journal of Ophthalmic Science & Research, 2022)