This test measures the amount of pressure it takes to flatten a portion of your cornea. Pressure readings help your doctor diagnose and keep track of glaucoma. He’ll give you drops to numb your eye, then press lightly on it with a tool called a tonometer.
Original Article Source Credits: WebMD , https://www.webmd.com/
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Link to Original Article: https://www.webmd.com/eye-health/eye-tests-exams#1