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Facts about the Eye

1.The study of eye is called Ophthalmology.

2.The tears in the eyes are produced by the lacrimal  glands.
3.Watching television in total darkness is not a good idea - your eye constantly has to shift focus to follow    the images, and the contrast between the bright screen and the dark room may cause eye strain.
4.The optician is a person who sells and fits eyeglasses, sunglasses, and specialty eye wear accordingly to the  ophthalmologist's prescription.

5.The color of the eyes is determined by the iris.

6.The different color shades of the human eye are green,blue,yellow,brown,grey etc

7.Some people are born with eyes of two different colors, a condition known as heterochromia.

8.The human eye is about 2.5 cm in length and weighs about 7 grams.

9.The eye is about as big as a ping-pong ball and sits in a little hollow area (the eye socket) in the skull.

10.The human eye has more than a million, light-sensitive cells.

11.Our eye lids shut automatically and protect our eyes from possible danger.

12.Every time you blink your eye, a tiny bit of tear fluid comes out of your upper eyelid. It helps to wash away germs, dust, or other particles our eye.Eye lids helps keep the eye clean and moist by opening and shutting several times a minute. This is called blinking, and it's both a voluntary and involuntary action, meaning you can blink whenever you want to, but it also happens without you even thinking about it.

Eye Picture
13.Each of your eyes has a small blind spot in the back of the retina where the optic nerve attaches. You don’t notice the hole in your vision because your eyes work together to fill in each other’s blind spot.

14.Out of all the muscles in your body, the muscles that control your eyes are most active.

15.You blink about 12 times every minute.

16.Your eyes can process 36,000 bits of information every hour.

17.The study of the iris of the eye is called iridology.

18.The cornea is the only living tissue in the human body that does not contain any blood vessels.

19.The conjunctiva is a membrane that covers the human eye.

20.The space between your eyebrows is called the Glabella.

21.There are two conflicting views about reading in dim light.Doctor William H. Bates-"Reading in poor light is good for the eyes because it trains you to relax your eyes so that you can see better in the dim light".Douglas Fredrick, a professor of ophthalmology at the University of California states "reading in poor light can cause eye strain and lead to myopia, or nearsightedness.

22.Visual acuity is usually measured with a Snellen chart.

23.Rubbing the eyes is harmful.It  increases the pressure inside the eyeball.It damages the inside eye and our vision.

24.20/20 vision (or really, 20/20 visual acuity) is considered "normal" vision, meaning you can read at 20 feet a letter that most human beings should be able to read at 20 feet.

25. The eye doctor is called as Opthalmologist.

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