EDUC 230 Chapter 9 with verified answers

EDUC 230 Chapter 9Visual acuity - correct answer How sharp visual images are perceived. Low vision - correct answer Vision of 20/70 to 20/200 in the best eye with the best possible correction. Legal blindness - correct answer Vision of 20/200 or worse in the best eye with the best possible correction. Visual field - correct answer The scope of what one can see without turning the head or moving the eyes. Refraction - correct answer The focusing of light as it passes through the components of the eye. Myopia - correct answer Nearsightedness; distant objects appear out of focus but near objects are in focus. Hyperopia - correct answer Farsightedness; near objects appear out of focus but distant objects are in focus. Astigmatism - correct answer Difficulties in focusing at any visual range. Nystagmus - correct answer Abrupt, jerky movements of the eyes. Strabismus - correct answer Any deviation in the alignment of the eyes as a result of muscle imbalance. Amblyopia - correct answer A generally correctable vision defect caused by the suppression of images resulting from strabismus or other eye disorders that causes blurred images in either or both eyes.