THE EFFECT OF EQUIVALENT POWER, TRANSVERSE MAGNIFICATION AND VIEWING DISTANCE ON READING SPEED OF STAND MAGNIFIERS

Jay Cohen

Abstract

Our previous study indicated that reading speed with different stand magnifiers decreased with increasing power. This study attempts to identify factors which may account for this difference. Thirty-two young normals read four equivalent paragraphs using four different stand magnifiers modified to provide equivalent fields of view. The lens parameters allowed comparison of the effects of equivalent power (+23, +17, +13D) transverse magnification (7.5x, 5.7x, 3.8x) and viewing distance (35cm, 30cm, 23cm). The results show a trend of decreasing reading speed related to increasing equivalent power, unrelated to either transverse magnification or viewing distance. The difference, however, was significant (p INCORPORATING THE SITUATIONAL LEADERSHIP MODEL IN A CLINICAL TEACHING SETTING

Details

Year: 1992

Program Number: 1:15 pm

Author Affiliation: n/a

Co-Authors: Brendal Waiss

Co-Author Affiliation: n/a

Room: Scotland B