0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How does an eye focus?
Most of it is just the shape of the eye (spherical with a concave cornea), the final fine focus is an opposing set of muscles which distort the shape of the lens.
How is shape formed to camera lens?
It used to be done by casting the lens in a rough shape, then hand polishing. Lenses today are cut and polished with lasers.
How do you wear contact lens?
Firstly Wash your hands properly before wearing contact lens. Then Gently shake your lens case containing the storage solution, to loosen the contact lens should it be stuck. Slide the lens out of its case and into the palm of your hand. Rinse thoroughly with the appropriate contact lens solution.Place the contact lens on the tip of your index or middle finger, which should be dry or mostly dry.With the fingers and thumb of your other hand, simultaneously pull up on your upper eyelid and down on your lower eyelid.Position the lens on your eye while looking upward or forward, whichever you find to be easier. Gently close your eye, roll your eyes in a complete circle to help the lens settle, and then blink.Look closely in the mirror to make sure the lens is centered on your eye. If it is, the lens should be comfortable and your vision should be clear.
How contact lenses place themselves?
Where your iris and pupil are on your eye, there is a slight round bump, as shown in this picture: http://www.retinaaustralia.com.au/images/eye6.gif A contact lens is shaped precisely to the size and shape of that bump, so that when you place a contact lens in your eye, the contact lens tries to find the place that it fits around perfectly, which is over your pupil and iris.
What is a second structure that holds the lens in place and enable it to change shape for focusing besides the cornea?
The cornea does not hold the lens of the eye in place, it can only hold contact lenses in place. The lens of the eye is in a bag called the lens capsule and the lens capsule is held in place by the lens zonules.
How do you get the contact lens to stop sticking to your finger and go in your eye easier?
Your contact lens will stick to the "least wet" thing it is in contact with. Try putting a couple of drops of solution on your finger so that the lens can easily move off your finger onto your eyeball. The easiest way that I find to put a lens in is to place it on the eyeball and then slowly move your eye (ie look away). Because of the shape of the lens, it moves with the eyeball and "off" your finger.
What shape is a lens?
a shape of a lens is curved outwards and concave one are curved in wards
What lens is a converging lens double-convex spherical-convex plano-concave or convexo-concave lens?
A converging lens is also known as a magnifying lens. The shape of the lens is a double convex shape.
What are lens part of?
Lens is part of contact.
If you wear a prosthetic or fake eye can you pop it in and out like a contact lens?
I have a prosthetic eye. It's like a contact lens, and it goes in similar to a contact lens
Which tool can you use to see the patterns on a small object?
which tool is to use to the patterns of an small object
When was first contact lens?
the first contact lens ever made was made out of glass.
