By. Haruka Matsui
This website is writing about structure of eye, how it works and how do we protect our eyes.
Firstly, you have to know that eye is made up with 13 parts.
Those 13 parts are...
The space in the anterior segment of the eye, filled with aqueous humor. (watery stuff fills the front of the eyeball around the lens)
Anterior chamberThe space in the anterior segment of the eye, filled with aqueous humor.
This is the hole in the coloured iris. It lets light into your eye. It gets very small in bright light, and bigger in dull light.
The lens focuses light onto the retina. It changes shape to make sure that the 'picture' on the retina is as clear as possible.
This is the see-through skin that covers the front of your eye. It is clear like glass and it has no blood vessels in it.
IrisThe iris controls the amount of light that enters the eye. The iris is the coloured part of your eye.
Ciliary musclesThese are a circle of tiny muscles around the lens. They change the shape of the lens by squeezing and relaxing. They squeeze it to look at nearby objects, and relax it for far away objects.
This is the lining on the inside of your eyelid and the outside of the front of your eye. You can see some tiny blood vessels on the conjunctiva over your eye. If your eyes get sore, these blood vessels get bigger and your eye looks red.
This is the tough skin which covers the outside of the eyeball (except for the see-through cornea). We call it the 'white' of the eye.
This is shows the picture you are seeing. The retina has two lots of cells called 'rods' and 'cones'. Rods can 'see' black and white. Cones can 'see' colours. They turn the picture into an electrical message for the brain.
A macule is a flat, distinct, colored area of skin that is less than 1 centimeter in diameter.
The electrical messages from the retina travel along the optic nerve to your brain.
This is a thicker jelly-like liquid which fills the larger part of the eyeball and keeps it in shape. (Vitreous means glassy, because the vitreous humour is very clear, so that light can pass through it).
How to protect your eyes
Find out if you are at higher risk for eye diseases.
Have regular physical exams to check for diabetes and high blood pressure.
Look for warning signs of changes in your vision.
Exercise more frequently.
Protect your eyes from harmful UV light. (You can try to use UV cut glasses)
Eat a healthy and balanced diet.
Get your eyes checked at least every two years.
Don't smoke. (people who smoke have higher risk of developing age-related macular degeneration, cataracts, uveitis and other eye problems)
When we see something, it is upside down and then, our brains turn it back to the actual image.
There are many ways to protect our eyes.
You can get more detail from these website.↓