cataracts are the opacities in the lens of the eye and can be a cause of vision impairment which can eventually lead to blindness. In the inevitable process of aging, changes may appear in the lens of the eye as cataracts. However, the changes due to aging and cataracts appear different which can be distinguished using special equipment. Cataracts are more common in certain breeds of dogs e.g., Boston Terrier, Cocker Spaniel, and in dogs with diabetes mellitus. Ocular trauma and inflammation in the eye due to drug reaction, radiation therapy, uveitis, and glaucoma can be a possible cause of cataracts if it is not congenital. Treatment includes surgical removal of cataracts by veterinary ophthalmologists which helps in restoring the vision and minimizing the complications associated with it. For the treatment to be effective, underlying health conditions should also be controlled.