Growths, parasites, microscopic organisms and infection can enter the human body and are sufficiently proficient to spread to attack the inside surface of an eye accordingly spreading the contamination. The insusceptible framework assumes a urgent part to repress the impact of contaminations of eye and furthermore amid the corneal transplantation since transplantation is expanding quickly. This logical track features the essentials and association of visual microbiology and immunology. Eye tumor alludes to a harmful development in any piece of the eye. Some eye malignancies are essential, while others speak to metastases from essential growths somewhere else in the body.