At some point during your eye exam, your doctor may decide to dilate your eyes and conduct a dilated eye exam. A dilated eye exam is used to enlarge the pupils in order to see the back of the eye more clearly.
During this portion of your eye exam, you will be asked to look at what is called a Snellen Eye Chart. You will stand a short distance away from the chart and be asked to recite letters or symbols of varying sizes. The smaller the size that you are able to read, the better your vision is.
A refractive error is the term that is used when a patient does not have 20/20 vision. Examples of refractive error include nearsightedness, farsightedness, and astigmatism. These diagnoses help in determining how and how much your vision can be corrected.
A retinoscopy is used to create an approximate prescription for glasses. During this portion of your eye exam, a retinoscope is used to shine a light into the eye. The doctor then measures the reflex of the light from the patient’s eyes. A phoropter is also used at this time. A phoropter is a machine that is placed in front of the eyes so the patient can experience a multitude of glasses prescriptions. Your doctor will then ask which prescriptions improve your sight and which make it worse.
Slit Lamp Test
During the slit lamp test, a microscope is used to study the eyes and determine the signs of normal aging and eye pathology. Eye issues such as cataracts, macular degeneration, or conjunctivitis may be detectable during this test. The slit lamp test is crucial to detecting eye issues early on.
Tonometry, better known as the glaucoma test, is used to measure the pressure within the eye. During this test, the eye is numbed,and then the doctor gently puts pressure on the patient’s cornea.
If you have any more questions about comprehensive eye exams, contact us today at Total Vision Centers. Our staff would love to help you. Book your appointment online today!