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Worldwide, cataracts are the most common cause of blindness. In developed countries or places with good access to healthcare, these are easily removed; in these areas, age-related macular degeneration is the most common cause of blindness.

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12y ago
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11y ago

The most common color blindness is Red and Blue color blind and it is most commonly found in boys rather than girls. The reason for this is that boys only have one X-chromosone and girls have two X-chromosones so boys are more prone to being color blind than girls.

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12y ago

cataracts. commonly found in the south East Asia areas of the world. we are doing this at school

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Q: What is the most common cause of blindness in the world?
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What is the Most Common Cause of Blindness in Nigeria?

Blindness is the inability to see anything, while vision impairment happens when an eye condition affects the visual system and its vision functions. The most common causes of blindness and vision impairment at a global level are cataracts and refractive error.


Which is NOT true of color blindness?

It is not true that color blindness is most common in females. Color blindness is most common in males and approximately 8 percent of men have it.


Deficiencies in which vitamin are the most prevalent world wide?

defency in Vitamin A is leading cause of blindness worldwide


What type of color blindness is most common?

The most co on type of colorblindness is red-green colorblind.


Are color blindness and blindness the same thing?

No - colour-blindness is the inability of the brain to interpret correctly colours that the eyes see, or maybe the eyes have a defect in their structure that sends the wrong signals to the brain. Blindness (total?) is when the eyes are unable to send visual signals to the brain at all. Maybe the optic nerve is damaged, or the eyes themselves are damaged - there are various medical reasons for the cause of blindness.


What are some causes of blindness?

old age, deterioration, and birth defects are the most common.


Which disease is cause by lack ofvitamin A?

In early childhood, blindness. Later on, various problems with immune system, cancer, etc. Most commonly, night blindness if the person isn't completely blind from a lack of Vitamin A in youth.


What do color blind people see when looking at red?

they most likely see green as if it is the most common type of colour blindness red/green colour blindness he/she would see green i think :S


What is the most common cause of anemia?

The most common cause of anemia is blood loss.


What ethnic groups are affected by usher syndrome?

It is the most common cause of deaf-blindness in the Western world. It affects people of all ethnic backgrounds, although certain ethnic groups, such as those with Finnish and Ashkenazi Jewish ancestry, are more likely to be affected with Usher Syndrome Type 3.


Is color blindness a dominant or a recessive trait?

Color blindness is a recessive sex linked trait.


How many types of Blindness are there?

Hundreds or more, but most are minor variations. The most common are red-green confusion, followed by blue-green confusion. Extremely rare is complete color blindness; everything is shades of gray.