5.2 Notes  The eye works a lot like a camera. It takes in light and focuses it to create an image. The image is then sent to your brain, where the picture is “developed.”  Tips to take care of your eyes: Make sure you have enough light when watching television or reading a book. Make sure you have enough light when watching television or reading a book. Avoid bright lights Avoid bright lights Don’t rub your eyes. Clean them out with water. Don’t rub your eyes. Clean them out with water. Wear glasses (sunglasses, protective glasses) Wear glasses (sunglasses, protective glasses) Stay 6 feet away from the TV Stay 6 feet away from the TV

5.2 Notes  optometrist – a health care professional who is trained to examine the eyes for vision problems and to prescribe corrective lenses (eye doctor)  ophthalmologist – a physician who specializes in the structure, functions, and diseases of the eye (specialist)  nearsightedness – can see clearly only close things  farsightedness – can see clearly only far away things  astigmatism – an eye condition in which images are distorted, causing objects to appear wavy or blurry

5.2 Notes  decibel – the unit for measuring the loudness of sound  The normal conversation is about 60 decibels  Draw & label the eye on pg. 127  Define each word in the eye drawing.

5.2 Notes  optic nerve - a bundle of nerve fibers that sends messages to the brain, which interprets them  sclera – the white of the eye, it covers and protect the whole eye except the front  cornea –the clear section that lets in light at the front of the eye  iris –the colored part of the eye, it controls the size of the pupil  pupil –the dark opening in the center of the iris, it grows larger in dim light and smaller in bright light, so that the right amount of light enters the eye  lens –focuses the light on the retina  retina – the light-sensing part of the inner eye