An Inside Look at the Human Eye

An Inside Look at the Human Eye How the Eye Works Light reflects off objects The cornea bends Light passes through the light through the lens and is focused on the retina and enters the eye through the cornea the pupil LENS CORNEA RETINA 08 JECT OPTIC NERYE PUPIL The retina converts light into electrical impulses The optic nerve sends the impulses to the brain and an image is seen Nearsightednes Happens when the cornea or lens is to curved or when the eyeball is too long Also called myopia Effects Blurry vision. especially at a distance lision may be better up close. depending on severity 34 million Americans 40 nearsighted over age аге Happens uhen the cornea or lens isn't Curved enough or when the eyeball is to shot Farsightenes Also called hyperopia Effects Blurry vision. especially at close ranges listant objects may be seen more clearly 14 million Americans 40 are Farsighted Over age Astigmatism Iccurs when the cornea or lens is shaped irregularly Prevents light from focusing normally on the retina Effects flurry vision at any distance Can cause headaches and discomfort Most people have astigmatism to some degree Provided by LERNER EYE CENTER Ophthalmologist in the San Francisco East Bay Area uww.estbayophthalmologist.com Sources: http://ww.difecon/dabetes/ecamplications/eye-carelchous.02608 http://uww.livescience.com/3919-human-eye-uorks.html http//www.nelnih.gov/eyedata/ adultrision.usa asp http://www.nel.nih.gov/heal thyeyges/hyperopia.asp http//uw.aoa.orglpatients-and-publicleye-and-wision-problems/glossary-of-eye-and-ision-condions/astigmatism http://uww.uebnd.com/eye-health/astigmatism -eyes