The Survey on Refraction Protocol for Optical Aids to be More Accurate

Abstract

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.