The eye is a complex organ with unique anatomy and physiology. The structure of the eye can be divided into two main parts: anterior segment and posterior segment. The anterior segment of the eye occupies approximately one-third while the remaining portion is occupied by the posterior segment. Tissues such as the cornea, conjunctiva, aqueous humor, iris, ciliary body, and lens make up the anterior portion.

Prof (Dr.) Subrata Mallick (MPharm, Ph.D., PGDBM, FIC) é um membro vitalício da Associação de Professores Farmacêuticos da Índia e da Associação Farmacêutica Indiana. Actualmente é o Professor e Chefe do Departamento de Farmacêutica, Escola de Ciências Farmacêuticas, Siksha'O' Anusandhan (Deemed to be University), Bhubaneswar, Índia.