Your Eye doctor might conduct the routine eye check-up and few more tests necessary for the diagnosis and treatment of cataract. These tests are performed by your eye doctor either during your periodic eye check-up or when you approach your eye doctor with specific problem. These tests will help your eye doctor for the preliminary diagnosis and to decide the line of treatment.  Depending upon your eye condition and the preliminary diagnosis, your eye doctor might advise you to take few more special tests for precise diagnosis and treatment of the cataract.