Take a close look at the picture and find 3 odd looking road signs.
INTRAOCULAR PRESSURE MEASUREMENT
An intraocular pressure test measures the force or pressure created by the fluid in your eyes. An abnormal level of eye pressure can be a warning sign of glaucoma.
The machine that tests for glaucoma sends a quick puff of air at your open eye. The puff of air briefly surprises you, so your eye reacts by closing. The machine then measures your eye pressure based on your reaction and your eye’s resistance to the pressure from the air puff.
Your optometrist may perform a manual intraocular pressure measurement as well to get a more precise reading. This test uses special instruments that gently touch your eye to measure the internal pressure. Before the test, the optometrist will apply anesthetic eye drops to ensure you don’t feel the instruments during the test.
These descriptions of common eye tests should make it clear that eye exams are simple and painless. Make regular visits to a local eye doctor so your eyes can receive these important tests. If your optometrist performs additional tests at your appointment, ask him or her to explain them.