A survey of dispensing error was conducted among 159 students who wearing, the ametropic corrective spectacles in Seoul health junior college. The results were summarized as follows;
1. Among the 159 spectacles wearers, the cases of dispensing by the hospital prescriptions were 35 students and the cases of dispensing by the optical shop prescriptions were 124 students.
2. The cases of coincidence between visual axis and optical center in regard to monocular were 46 eyes (14.6%), and the cases of coincidence which the height of optical´ centers in right and left lenses were 56 students.
3. In 188 eyes (59.1%), the horizontal prismatic effect in monocular were less than 0.50 prism diopter, and showed 70 significant differences between the hospital prescription group and the optical prescription group (p>0.01).
4. In respect to horizontal induced phoria, the cases of induced exophoria´, were 74 students whereas the cases of induced esophoria were 77 students. Both induced esophoria group and induced exophoria -group showed no significant difference between the hospital prescription group and the optical shop prescription group, respectively (p>0. 0 1). But the groups between induced exophoria and induced esophoria showed significant difference (p<0.01).
5. In 143 students (89.9°0), vertical induced phoria less than 0.50 prism diopter, and the group between hospital prescription and optical shop prescription showed no significant difference (pi0.01).
6. On the basis of centration which of RAL-RG 915 in Germany Standards, improper spectacles wearers were 88 students (55.380). Among the improper spectacles wearers, the cases of the cause by the horizontal prismatic effect were 39 students, its by the vertical imbalanced prismatic effect were 27 students and its by the both as above were 22 students.
From the above results, establishment of the Korean Standards for ametroaic corrective spectacles´ dispensing errors is requested in order to supply the ametropes with proper spectacles.
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