Also, parents may not suspect their children have the condition until a situation causes confusion or misunderstanding. Early detection of color deficiency is vital since many learning materials rely heavily on color perception or color coding. That is one reason the American Optometric Association recommends that all children have a comprehensive optometric examination before they begin school.
A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don’t pass this test, you may have poor color vision, or your doctor may tell you that you’re color blind. However, being truly color blind is a very rare condition in which you’re only able to see shades of gray.
Color deficiency can be diagnosed through a comprehensive eye examination. The patient is shown a series of specially designed pictures composed of colored dots, called pseudoisochromatic plates. Pseudoisochromatic plate testing can determine if a color vision deficiency exists and the type of deficiency. However, additional testing may be needed to determine the exact nature and degree of color deficiency.
We also offer the latest innovations in single vision lenses. From our Clearview Crystal Advanced lenses delivering our widest fields of view, clear vision to the very edge of the lens, superb contrast and colour definition as well as being extremely slim and light to options such as Thin & Light for great comfort and appearance; Anti-Reflection for clearer vision and Adaptive Lenses that change with the light for added comfort.
With the results of those assessments, your eye doctor can provide a contact lens prescription that is the right fit for your eyes. An eyeglass prescription is no substitute for a contact lens exam because the two are very different. An eyeglass prescription measures for lenses that are positioned approximately 12 millimeters from your eyes; whereas a contact lens prescription measures for lenses that sit directly on the surface the eye. An improper fitting or prescription of contacts can damage the health of the eyes.