For most people, there is no rush to remove cataracts because they usually don't harm the eyes. It's up to you and your doctor to decide when cataract surgery is right for you. Most eye doctors suggest considering cataract surgery when your cataracts begin to affect your quality of life or interfere with your ability to perform normal daily activities, such as reading or driving at night. Talk with your eye doctor about whether surgery is right for you. When your prescription glasses can't clear your vision, the only effective treatment for cataracts is surgery. There are multiple different devices available to do this. This test measures fluid pressure in your eye. Using a slit lamp or a special device called an ophthalmoscope, your eye doctor can examine your lens for signs of a cataract. This makes it easier to examine the back of your eyes (retina). To prepare for a retinal exam, your eye doctor puts drops in your eyes to open your pupils wide (dilate). The slit allows your doctor to view these structures in small sections, which makes it easier to detect any tiny abnormalities. The microscope is called a slit lamp because it uses an intense line of light, a slit, to illuminate your cornea, iris, lens, and the space between your iris and cornea. A slit lamp allows your eye doctor to see the structures at the front of your eye under magnification. Using a chart or a viewing device with progressively smaller letters, your eye doctor determines if you have 20/20 vision or if your vision shows signs of impairment. Your eyes are tested one at a time, while the other eye is covered. A visual acuity test uses an eye chart to measure how well you can read a series of letters. Your doctor may conduct several tests, including: To determine whether you have a cataract, your doctor will review your medical history and symptoms, and perform an eye examination.
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