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A&P II Lab Test #1

Dr. Summers BSC1086L

QuestionAnswer
Refraction Ability of the eye to bend light so that an image is focused on the retina.
Real Image The image formed on the retina as a result of the refractory activity of the lens. (reversed, inverted, and reduced).
Accommodation Process by which the eye increases optical power to maintain a clear image on an object getting closer to the eye.
Emmetropia Normal Eye
Myopia Near sightedness; image focuses in front of retina
Hyperopia Far sightedness; image focuses behind the retina
Astigmatism Irregularities in the curvature of the lens and/or the cornea lead to a blurred vision problem.
Conjunctivitis Inflammation of the conjunctiva, often accompanied by redness of the eye.
Presbyopia Old Eye; vision condition involving loss of the eye's ability to focus on close objects.
Cataract Cloudiness or opacity. Vision becomes hazy or entirely obstructed (blind).
Glaucoma Pain and possible blindness. Retina and optic nerve are compressed.
Convergence Medial eye movement. Both eyes are directed toward the near object viewed.
Binocular Vision Both eyes are used synchronously to produce a single image but slightly different views.
Astigmatism Test one eye open to view chart. if all radiating lines appear equally dark and distinct, there is no distortion of refracting surfaces.
Created by: sulinacp