the eye and correcting vision defects

• the eye focuses light onto the retina by changing the shape of the lens. a process known as accomodation
• to look at distant objects, the cilliary muscles relax, which pulls the suspensory ligaments, making the lens thin out and refracting the light by a smaller amount
• people with hyperopia are unable to focus on objects near them
• hyperopia is caused when the eyeball is too short or the lens is not curved enough.
• myopia is where people can't see far away because their eyes are too long or the lenses are too curved.
• hyperopia can be treated with convex lenses
• myopia can be treated with concave lenses