7 Necessary Functions For A General Screener

Accuracy and consistency are key to successful screening, recommendations, and findings in the area of vision health and eye health. These seven essential functions should be present in every vision screener:

1. Acuity: An eye test that measures how accurate a patient's vision is by reading from a distance a chart of numbers, letters, and letters in different sizes.

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2. Ambler: The Ambler grid charts test can be used to detect vision problems due to damage to the macula (the center of the retina), or to the optic nerve in the presence of macular degeneration.

3. Refractive errors: This vision test checks whether your eyes bend light correctly. This test checks for common vision issues like nearsightedness, astigmatism, and farsightedness. It can also help determine if the patient requires glasses or contact lenses.

4. Depth Perception: A 3D imaging test, or depth perception test, is used to determine if a patient has stereopsis or binocular vision. It also helps to rule out possible "lazy eyes" vision problems.

5. Colors: The color blind test can be used to determine if a patient is color blind or has a color vision impairment. This test determines whether a patient is unable to distinguish particular colors.

6. Contrast: The contrast sensitivity test measures a patient's visual ability to distinguish between light and dark contrast. It's useful for diagnosing cataracts.

7. Complete Visual Field: An eye exam that detects dysfunction in central and peripheral vision. This can be a sign of glaucoma or stroke.