1. Department of Ophthalmology, Government Medical College, Kallakurichi,
Tamilnadu, India
2. Department of Pharmacology, AIIMS, Raipur, Chhattisgarh, India
3. Department of Ophthalmology, Melmaruvathur Adhiparashakthi Institute of Medical Science, Melmaruvathur,
Tamilnadu, India