ABSTRACTDue to the complexity of the eye's structure and barriers, drug delivery experts and ophthalmologists find ocular drug delivery to be an extremely difficult field. The ocular drug delivery system is regarded as important and complex since it is tough to administer drugs there. Additionally, the traditional ophthalmic formulations have limited absorption and a brief pre-corneal residence time. Ophthalmic products are sterile preparations that can be administered onto the surface of the eye. The slightest inflammation in the eyes can cause intense soreness and cause eye infections. Quality control of ophthalmic preparations includes identification, potency, purity, sterility particulate matter, and dissolution testing. Keywords: Ocular Diseases, Contact lenses, Eye drop, Eye ointments, Ophthalmic solution.