Dr Dave Gill and Dr Cindy Cieszko examining a patient using the slit lamp to check the health of the eyes

There is alot of things the doctor can see just by looking at the eyes....diabetes, high cholesterol, high blood pressure, glaucoma, cataract, pterygium, retinal detachments, pathology, they check the layers of the cornea, the optic nerve, and the slit lamp gives better magnification of the macula