Many professionals rely on vision screener technology to help them determine the visual acuity of patients. There are numerous machines that are available for this purpose, yet all complete the same things but at different results. Below is a bit of information on what they do and how they are used.
One of the most widely used models has been used for well over eighty years, while the company who makes it was actually one of the first to test and do research for vision. It has tests with reflective lighting instead of backlit testing which is much harder for many people to see. It will even allow people who wear progressive lens eyeglasses to test; some other models used means that these people have to test without glasses.
Most machines allow for your eyes to be anywhere from 16 to 20 inches away from the screen to test. There are 9 tests that are generally given with these machines, to measure your acuity. Some that are included would be night and peripheral testing with LED white lights to help with distinction.
When you take this kind of test, you will put your forehead against a lever at the very top of a machine. Then you will see different colors or signs and will be asked what you can see. The person giving you the test will keep track of your answers so that they can determine what visual needs you have.
This information is given to the doctor so that they can determine what type of visual help you will need, if any. Some people find that they are near sighted or far sighted based on the information from these tests. Others find that they are color blind, and their doctor is able to give help for this also.
If you have any questions about vision screeners and what they are used for, you can speak to a local optometrist or your primary physician. They each have experience with them, and can tell you what each test is for and how it is measured. For details on your situation, you should schedule a test at your earliest convenience.
One of the most widely used models has been used for well over eighty years, while the company who makes it was actually one of the first to test and do research for vision. It has tests with reflective lighting instead of backlit testing which is much harder for many people to see. It will even allow people who wear progressive lens eyeglasses to test; some other models used means that these people have to test without glasses.
Most machines allow for your eyes to be anywhere from 16 to 20 inches away from the screen to test. There are 9 tests that are generally given with these machines, to measure your acuity. Some that are included would be night and peripheral testing with LED white lights to help with distinction.
When you take this kind of test, you will put your forehead against a lever at the very top of a machine. Then you will see different colors or signs and will be asked what you can see. The person giving you the test will keep track of your answers so that they can determine what visual needs you have.
This information is given to the doctor so that they can determine what type of visual help you will need, if any. Some people find that they are near sighted or far sighted based on the information from these tests. Others find that they are color blind, and their doctor is able to give help for this also.
If you have any questions about vision screeners and what they are used for, you can speak to a local optometrist or your primary physician. They each have experience with them, and can tell you what each test is for and how it is measured. For details on your situation, you should schedule a test at your earliest convenience.
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