1. Vitreo-Retina and Oculoplasty, All India Institute of Medical Sciences, Patna, Bihar, India
2. Department of Ophthalmology, All India Institute of Medical Sciences, Patna, Bihar, India
3. Cataract, Glaucoma, Refractive, Squint, Paediatric Ophthalmology and Medical Retina Services, All India Institute of Medical Sciences, Bibinagar, Hyderabad, Telangana, India