| 摘要 |
The present invention is an eyeglass device that has manually variable prisms to correct Strabismus; that is, double vision. Variable prism glasses allow the doctor or patient to adjust the prism power to the minimum required at a particular time and no more. They also allow adjustment of the prisms so that they work the weak eye muscles. In time the weak muscles may become strong enough so that prism glasses are no longer needed. The present invention has numerous embodiments. The medical profession can treat Strabismus, also called Convergence Insufficiency (CI), both actively and passively. The active treatment provides the doctor with a varied range of therapeutic options. The doctor has the ability to change the treatment program as often as necessary without the interruption of ordering new glasses because the present invention changes to meet the needs of the patient. When the invention is used in a passive fashion, it allows the patient to manually adjust the prism strength without removing the eyeglasses.
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