Color blindness (color vision deficiency) is a condition in which certain colors cannot be detected. There are two types of color vision difficulties: inherited (congenital) problems that you have at birth, and problems that develop later in life.
People born with color vision problems are unaware what they see is different from what others see unless it is pointed out to them. People with acquired color vision problems are aware that something has gone wrong with their color perception.
Congenital color vision defects usually pass from mother to son. These defects are due to partial or complete lack of the light-sensitive photoreceptors (cones) in the retina, the layer of light-sensitive nerve cells lining the back of the eye. Cones distinguish the colors red, green and blue through visual pigment present in the normal human eye. Problems with color vision occur when the amount of pigment per cone is reduced or one or more of the three cone systems are absent. This limits the ability to distinguish between greens and reds, and occasionally blues. It involves both eyes equally and remains stable throughout life.
There are different degrees of color blindness. Some people with mild color deficiencies can see colors normally in good light but have difficulty in dim light. Others can't distinguish certain colors in any light. In the most severe form of color blindness everything is seen in shades of gray.
Except in the most severe form, color blindness does not affect the sharpness of vision at all. It does not correlate with low intelligence or learning disabilities.
Most color vision problems that occur later in life are a result of disease, trauma, toxic effects from drugs, metabolic disease, or vascular disease. Color vision defects from disease are less understood than congenital color vision problems. There is often uneven involvement of the eyes and the color vision defect will usually be progressive. Acquired color vision loss can be the result of damage to the retina or optic nerve.
Change in color vision can signify a more serious condition. Anyone who experiences a significant change in color perception should see an ophthalmologist. There is no treatment for color blindness. It usually does not cause any significant disability. It can, however, prevent employment in an increasing number of occupations.
An independent review of last year's results at the Boston Eye Group shows that 92%-96% of our patients were able to see 20/25 or better. 100% of patients were able to see 20/40 or better. This will usually enable you to pass a driver's license eye examination without glasses or contact lenses. Most patients are able to perform their daily activities and enjoy many sports with minimal, if any, reliance on glasses.
Contact us to learn more about Laser Vision Correction and other surgical treatment options to improve your vision. Our specialists have extensive experience and training, and our patients report great satisfaction with their laser eye surgery. Dr Melki is on the clinical faculty at Harvard Medical School and has conducted thousands of laser eye surgery procedures. Learn more about Laser Eye Surgery and financing options. We have a page on this website dedicated to discussing LASIK patient financing. You can even fill out an online application to qualify for LASIK financing. We offer 0% financing, on approved credit with low fixed monthly payments, no down payment and no pre-payment penalty.
In addition to superior experience, ensuring the utmost success and safety during laser vision correction involves using state-of-the-art equipment and highly trained personnel. This is translated into a higher cost than found at the so-called "discount Lasik chains". We believe that our patients understand that a compromise on quality is unacceptable when it comes to one's vision. It is our commitment to best service and technology that determines our pricing model.
Are you ready to reduce or eliminate your dependence on glasses or contact lenses? The iLASIK Procedure is the result of a decade's worth of technical refinement; it combines all of the most advanced all-laser LASIK technology in one efficient LASIK procedure... It simply doesn't get any better, so now is the time.
Dr Fava receives best paper award at the American Society of Cataract and Refractive Surgery annual meeting
Dr Melki named in the top 250 intraocular lens innovators
Mass Eye and Eye partners with Boston Laser to deliver Cosmetic services in Brookline
Our web site was created as a patient education resource for any interested patient. Feel free to explore the entire website to get the answers to the questions that you have been seeking. If you have service, LASIK, cosmetic, or cataract questions call us we can help!(617) 566-0062
12.04.2011 um 4:03