Pawan Kumar1, Sudha Sharma2, Vinod Kapil3. 1. Pediatrics, ESI State Hospital, Parwanoo, India. 2. Department of Pathology, Dr. Yashwant Singh Parmar Government Medical College, Nahan, India. 3. Diploma in Ophthalmic Medicine & Surgery, Medical Superintendent, ESI Hospital, Parwanoo, India.