An evaluation helps your eye health care provider learn more about your vision problems. They can tell if cataracts are the cause. This evaluation includes a health history, vision tests, and an eye exam. What your provider learns will help them find the best treatment choices for you.

You will be asked questions about your vision and any other eye problems you may have. Your eye health care provider will also ask about health problems, such as diabetes. Be sure to tell your provider about any recent health conditions. Tell them about all medicines, vitamins, herbs, and other supplements you are taking.

Your eye health care provider will do a few tests to check your vision. You will read from an eye chart. Your vision will be tested under different lighting. Bring eyeglasses or contact lenses if you wear them. Your provider can check your prescription.

In most cases, you will be given eye drops to widen (dilate) your pupils before your exam. During the exam, the health care provider will look inside your eye using special equipment. This includes a microscope with a bright light (a slit lamp). Your provider will also use a lighted tool (ophthalmoscope) to look at the back part of your eye, called the retina.

After your eye exam, you and your eye health care provider will talk about your treatment choices. A new eyeglass or contact lens prescription may help your vision for a while. But surgery is the only way to remove a cataract and replace your cloudy lens. You may want to wait to have your cataract removed if you can still do your daily activities without any problems. You and your provider will decide what's best for you.

If you decide to have cataract surgery, the length of your eye and curvature of your cornea will be measured. This information helps your health care provider choose a new lens to replace your cloudy lens. Measurement is done using special tools. These may include an A-Scan, laser interferometry, a keratometer, or a topographer.