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KMID : 0371519950180000207
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Bulletin of Wonkwang Health College
1995 Volume.18 No. 0 p.207 ~ p.213
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A Study on Improvement and Problem of Ready-made Reading Spectacles.
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Abstract
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The measurement of Inter pupillary distance ( P.D ) in 702 old aged farmers ( aged over 45) , and comparison of frame size and Distance between optical center ( O.C ) of 240 Ready-made Reading spectacles were studied.
The average of P.D in. male ( 62.83mm ) is greater than in female (61.18mm ), and the O.C of Ready-made Reading spectacles of Plastic lens ( 71.2mm ) longer than glass lens ( 70.8mm ).
The correction prism power by the wearing Reading spectacles in male was under 0.7prism over 3.6 prism and in female was under 0.9prism over 4.4prism, the prism power is that female greater than male.
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