Intro to opticianry Questions and Answers

Intro to opticianry Questions and Answers glasses knwn as spectacles, specs, and eyeglasses Shades dark color to protect eyes from bright light Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:06 / 0:15 Full screen Brainpower Read More modern glasses made up of two parts: frame(metal or plastic) and lenses two other ways to correct vision contact lenses and refractive surgery refraction doctor/technician determines what the correct prescription for your glasses should be Leonardo da Vinci published Codex of the eye: submerging his eye in a bowl of water to change the way the eye could see frames we are most familiar with temples to the back over the ears- 1727 pince-nez (pinch nose) two lenses joined by a weak spring that held the lenses in front of the eyes with pressure monocle single lens that was designed to fit over one eye lorgnette type of frame that has two lenses with a handle on one side for holding the glasses who invented the bifocals Ben Franklin in 1784 in 1825 the first lenses to correct astigmatism were invented optos greek word for "eye" optikas Greek word for "vision" Ocul- Latin prefix for "eye" opthalmologist a surgeon who specializes in the eye cataracts clouding of the lens inside the ey retina light-sensitive layer of cells at the back of the eye optometrists this doctor determines what lens the patient needs to see clearly optician pharmacists of the eye care team; does not fill prescriptions for medications grinding creating a lens from a larger piece of plastic, glass, or polycarbonate