| 摘要 |
A method of using decals peeled off a tape dispenser to measure eyeglass wearers for bifocals, trifocals and progressive bifocals is disclosed. The decals adhere to the lens of plastic demonstration spectacles either by suction, friction or transparent adhesive liquid on a reverse side. The decals come in varying sizes reflecting the varying widths and styles of eyeglass frames. The decals can also be flat topped or round in shape. The method involves placing the decal on demonstration lens worn by the patient and repositioning it if necessary so that its top coincides with the top of the lower eyelid of the patient. If desired, the practitioner can first crudely estimate the distance from the top of the lower eyelid to the bottom of the lens with demonstration spectacles on the wearer and then attach and position the appropriate size decal on the demonstration lens so that the top of the decal coincides with the top of the lower eyelid of the patient. In either case, the method requires little skill and hence reduces inaccuracy and also allows the patient to test the bifocals or trifocals before their manufacture.
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