[1] Sri Sankaradeva Nethralaya, Dept Vitreoretina Surg, Gauhati 781028, Assam, India
[2] Sri Sankaradeva Nethralaya, Dept Glaucoma, Gauhati, Assam, India
[3] Sri Sankaradeva Nethralaya, Dept Ophthalmol, Gauhati, Assam, India
[4] Sri Sankaradeva Nethralaya, Dept Ocular Pathol, Uveitis & Neuroophthalmol Serv, Gauhati, Assam, India