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What is Color Blindness?
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Causes of Color
Blindness
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Inherent color blindness
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Color Blindness in
later life
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Diagnosis of Color
Blindness
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Treatment for Color
Blindness
Color blindness occurs when cones (the
light sensors in the retina that respond to color) are formed with an
incorrect balance of the pigments necessary to see color. Someone who is
color blind cannot distinguish between certain colors. There are three color
sensitive cones in the retina which respond to red, green and blue light.
Combinations of these three colors allows us to appreciate all of the colors
of the rainbow. Loss of just one of these cones will disrupt the color
vision and loss of two of these cones will reduce images to black and white.
Color deficient vision is either
inherited, or as a side-effect of an illness or medication.
Inherited color deficient vision is more
common. Red, green and blue color deficiency is carried in the genes, and
the majority of affected individuals are males. A recessive gene in both
males and females carries total color blindness. Inherited color deficiency
can vary from mild to severe, but will not worsen over a lifetime.
Changes can occur due to diseases which
affect the eye or brain or through excessive use of medication. Poor blue
vision is the most common color abnormality later in life.
A number of tests have been produced to
test for color blindness. Most require the recognition of a colored symbol
or figure carefully constructed to be confused with the background
Colored filters in the form of spectacles
or contact lenses for color deficient people can improve performance on
color vision testing but often have limited benefit in daily living.
Acquired color vision loss can occasionally be reversible depending on the
cause eg, stopping medications such as chloroquine or ethambutol. Eye
surgery may sometimes help to improve color perception for example cataract
extraction, retinal detachment repair and the prevention of further
deterioration in color vision. Retinal laser treatment of diseases affecting
the back of the eye eg, diabetic maculopathy, age related macular
degeneration can occasionally reverse acquired color loss.
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ONLINE ACCESS
WEBSITES.
http://www.EyeRepublic.com.ph - EYE REPUBLIC
Ophthalmology Clinic
http://www.OCP.com.ph - Ophthalmic
Consultants Philippines Co. -
http://www.LASIK.com.ph - Refractive
Surgery Resource
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http://www.Eye.com.ph - Eye
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http://www.Retina.com.ph - Retina
Surgery Resource
http://www.Glaucoma.com.ph - Glaucoma
Online
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General inquiries - help@EyeRepublic.com.ph
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EYE REPUBLIC
Ophthalmology Atlas
CLINIC INFORMATION
Mobile E-Yellow Pages. Via
SMS, text LUK4 EYEREPUBLIC
(send to 2851 for Globe and Sun Cellular, and 2951 for Smart). |
EYE REPUBLIC Ophthalmology Clinic
Manila
3/F Don Santiago Building Units 309-310
1344 Taft Avenue, Ermita
Manila, 1000 Philippines
Direct and Fax: (632) 536-2398
Trunk Line: (632) 523-8271 to 79 local 30
Mobile: (63917) 899-2020
Map and directions
|
EYE REPUBLIC
Ophthalmology Clinic
Asian Hospital
and Medical Center
5/F Medical Office
Building (MOB) Suite 509
2205 Civic Drive,
Filinvest, Alabang
Muntinlupa City,
1781 Philippines
Direct:
(632) 771-9253
Direct and Fax:
(632) 771-9254
Mobile: (63917) 795-2020
Map and Directions
|
EYE REPUBLIC Ophthalmology Clinic
Medical City
6/F Medical Arts Tower Inc (MATI) Suite 602
MERALCO Compound, Ortigas Avenue
Pasig City, 1604, Philippines
Direct and Fax: (632) 632-7846
Mobile: (63917) 537-2020
Map and directions
|
EYE REPUBLIC
Ophthalmology Clinic
St. Luke's
Medical Center
6/F
Cathedral Heights Building Complex (CHBC)
North Tower Suite 614
279 E. Rodriguez
Sr. Boulevard
Quezon City, 1102
Philippines
Direct and Fax:
(632) 407-3883
Mobile: (63917) 855-2020
Map and directions
|
CLINIC HOURS
First-Come, First-Served
Monday to Saturday 9:00 AM to 6:00 PM
All clinics are closed on Sundays and Holidays
|
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COLOR BLINDNESS information compiled by
Dr.
Edmin Michael G. Santos and initially uploaded on May 1, 2005.
Last updated on
September 13, 2007. |
