title: Author's reply.
authors.affiliation: Department of Ophthalmology, Dr. Mohan's Diabetes Specialities Centre, Chennai, Tamil Nadu, India.
authors.forename: Ramachandran
authors.initials: R
authors.lastname: Rajalakshmi
authors.affiliation: Department of Ophthalmology, Dr. Mohan's Diabetes Specialities Centre, Chennai, Tamil Nadu, India.
authors.forename: Vijayaraghavan
authors.initials: V
authors.lastname: Prathiba
authors.affiliation: Department of Diabetology, Dr. Mohan's Diabetes Specialities Centre and Madras Diabetes Research Foundation, Chennai, Tamil Nadu, India.
authors.forename: Viswanathan
authors.initials: V
authors.lastname: Mohan