Glaucoma is an eye disease that gradually takes your vision. In the early stages, this disease does not exhibit any signs. It increases pressure within your eyeball. If you leave this disease untreated, then it could result in vision loss.
Many people go to the eye doctor and get a screening that only checks for eye pressure. Read on to find out how a complete eye exam helps with diagnosing glaucoma.
Your optometrist performs a variety of tests when doing a comprehensive eye exam. A visual acuity test is one of the first tests used to examine your eyes. It measures the sharpness of your vision.
This test is performed using a projected eye chart. It is a wall-mounted chart that has letters in the shape of a pyramid. A big letter E sits at the top of the pyramid. The letters are arranged in a way to test your clarity and sharpness of vision at a baseline distance of 20 feet.
Your doctor uses this test to gauge the quality of your visual acuity. He has you read each line of the chart. When a line of letters become difficult to read, your optometrist can measure the quality of your near vision.
Check Your Color Vision
A screening test is done to rule out colorblindness. It is done to check for hereditary color deficiencies in your vision. This testing can alert your optometrist to conditions like glaucoma that may be affecting your color vision.
Measure the Pressure in Your Eyes
A glaucoma test is one of the tests performed during a comprehensive exam. To measure the pressure in your eyes, your eye doctor may use a procedure known as non-contact tonometry (NCT). You have to put your chin on a rest and look directly into a machine. Your doctor will blow a small puff of air into your eyes. It does not hurt. The machine measures your intraocular pressure by your eye's resistance to the puff of air. If you have a high eye pressure, then you may be at risk for glaucoma.
It is common to want to get a basic screening of your eyes. However, you need to go through more complex testing to find conditions like glaucoma. Some eye conditions do not have symptoms until after damaging your vision. These tests reveal any conditions that may be affecting your vision. The conditions can be diagnosed and treated. When you schedule your next appointment, you should ask for a complete eye exam.