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Symptoms & Detection

What are the symptoms?

At first, there are no symptoms. Vision stays normal, and there is no pain.

However, as the disease progresses, a person with glaucoma may notice his or her side vision gradually failing. That is, objects in front may still be seen clearly, but objects to the side may be missed. As the disease worsens, the field of vision narrows and blindness results.

How is it detected?

Many people may know of the "air puff" test or other tests used to measure eye pressure in an eye examination. But this test alone cannot detect glaucoma. Glaucoma is found most often during an eye examination through dilated pupils. Dilating pupils involves putting drops into the eyes during the exam to enlarge the pupils. This procedure allows the eye care professional to see more of the inside of the eye to check for signs of glaucoma.




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  • Glaucoma is found most often during an eye examination through dilated pupils.


    Department of Health and Human Services NIH, the National Institutes of Health USA.gov