What are the tests and procedures in a routine eye exam?
What are the tests and procedures in a routine eye exam?
A technician will often perform a few basic tests before you see the doctor, including a color sensitivity test, peripheral vision test, a glaucoma (or “air puff” test) and a cover test to determine how well your eyes work together.
What two tests are regularly done at a routine eye exam?
You should plan at least an hour for a comprehensive eye exam. There are a number of different kinds of vision screening tests that your eye doctor will perform to check overall vision health, including a glaucoma test, refraction test, and visual acuity test.
What tests are used to test vision?
The visual acuity test is used to determine the smallest letters you can read on a standardized chart (Snellen chart) or a card held 20 feet (6 meters) away. Special charts are used when testing at distances shorter than 20 feet (6 meters).
What is the eye test chart called?
We often measure the standard of vision achieved with or without glasses using the familiar eye test (Snellen) chart, which is viewed from a distance of 6 metres (20 feet).
What is a refraction test?
A refraction is an eye exam that measures a person’s prescription for eyeglasses or contact lenses. Normal vision occurs when light is focused directly on the retina rather than in front or behind it.
What does a comprehensive eye exam include?
A neurological assessment of the visual system including a review of the pupil reactions, ocular motility, and an assessment of the peripheral vision. Screening for glaucoma, including testing pressure inside the eye, looking inside the eye at the retina and optic nerve, as well as performing peripheral vision tests.
What is comprehensive eye test?
The difference between a vision screening and an eye exam A comprehensive eye examination on the other hand is performed by an optometrist and will involve a thorough examination of all aspects of your vision. Your optometrist will then recommend a treatment plan, customised to your individual needs.
What is the proper procedure for testing visual acuity?
You will keep both eyes open. You will be asked to cover one eye with the palm of your hand, a piece of paper, or a small paddle while you read out loud the smallest line of letters you can see on the chart. Numbers, lines, or pictures are used for people who cannot read, especially children.
What is on the Snellen chart?
The Snellen chart is a familiar sight in physician and optometrist offices. It consists of 11 lines of block letters, also known as “optotypes,” which are constructed according to strict geometric rules and whose size decreases on each lower line of the chart.
How do you read a Snellen test?
To interpret your reading, think of the numbers in feet. For instance, someone with 20/60 vision can read at 20 feet away what a person with normal vision could read at 60 feet away.