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KMID : 1159320200220030335
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Korean Journal of Vision Science
2020 Volume.22 No. 3 p.335 ~ p.347
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The Survey on Refraction Protocol for Optical Aids to be More Accurate
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Kim Jung-Hee
An Young-Ju
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Abstract
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Purpose : This study was to investigate the refraction protocal ongoing in the clinics when conducted dispensing, refraction and prescribing contact lens optical aids to be more accurate.
Methods : A questionnaire covered three items refraction, dispensing and prescription of contact lenses and was conducted by 53 optometrists in Gyeonggi-do.
Results : In the item refraction, 50(94.3%) optometrists answered checking visual acuity with habitual correction. When asked measuring the interpupillary distance, 24(45.3%) optometrists used a P.D. meter and 21(39.6%) used the value measured by the auto-refractometer. 23(43.4%) optometrists did not use the Jackson cross-cylinder after correcting astigmatism. The reasons were diverse; ‘not aware of the methods’(17.4%), ‘unnecessary to do(52.2%)’, ’not enough time(26.1%)’ and ‘unspecified(4.3%)’. 8(15.1%) optometrists did not doublecheck after prescribing contact lenses.
Conclusion : In order to provide the best correction, the accurate refraction, dispensing and prescribing contact lenses must be fulfilled as well as the eye examinations required in the clinic.
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KEYWORD
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Jackson Cross-cylinder, Fitting, Preliminary examination, Optical Aids
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