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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.
What else can I help you with?
What are the different types of blindness?
color blindness night blindness snow blindness
What are the types of Blindness ?
Protanope andDeutanope
How can people recover from blindness?
yes some types of blindness can be recovered. it depends on what type of blindness it is.
Which cell or cell types is color blindness in?
Color blindness is due to dysfunctional cone type cells in the retina of the eye.
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.
How many people die from Blindness ?
No one "dies" from blindness, that is unless no one stops them from walking into traffic.
What are the 2 types of defects of visions?
near sighted, far sighted, cataracts, glaucoma, blindness
How many kinds of color blindness is there?
2
Is there a cure for blindness?
Depends on the condition. Some types can be fixed by surgery, or can fix themselves over time
What diseases slowly cause blindness?
Common diseases that cause blindness are onchocerciasis, syphilis, diabetes, glaucoma, trachoma. Many other less common diseases may cause blindness.
Can people who are colourblind be pilots?
Generally, no. Some types of color blindness are OK for general aviation, but red-green color blindness is almost always a disqualification, because the wingtip lights are red and green.
How many people have Blindness ?
over half the world
