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2. Aberrations of the eye - Wikipedia

   en.wikipedia.org/wiki/Aberrations_of_the_eye

   The small improvement in depth of focus with the conventional IOLs enhances uncorrected near vision and contribute to reading ability. [15] Wavefront customized lenses can be used in eyeglasses. Based on Wavefront map of the eye and with the use of laser a lens is shaped to compensate for the aberrations of the eye and then put in the eyeglasses.

3. George M. Stratton - Wikipedia

   en.wikipedia.org/wiki/George_M._Stratton

   Stratton wore these glasses over his right eye and covered the left with a patch during the day, and slept blindfolded at night. Initial movement was clumsy, but adjusting to the new environment took only a few days. [59] Stratton tried variations of the experiment over the next few years. First he wore the glasses for eight days, back at Berkeley.

4. Diplopia - Wikipedia

   en.wikipedia.org/wiki/Diplopia

   The provider may prescribe an eye patch to relieve the double vision. The patch can be removed after the nerve heals. Surgery or special glasses (prisms) may be advised if there is no recovery in 6 to 12 months. If diplopia turns out to be intractable, it can be managed as last resort by obscuring part of the patient's field of view.

5. PRISM - Wikipedia

   en.wikipedia.org/wiki/PRISM

   PRISM is a code name for a program under which the United States National Security Agency (NSA) collects internet communications from various U.S. internet companies ...

6. Category:Corrective lenses - Wikipedia

   en.wikipedia.org/wiki/Category:Corrective_lenses

   A corrective lens is a lens worn on or before the eye. They are used to treat myopia , hypermetropia , astigmatism , and presbyopia . The main article for this category is Corrective lens .

7. Congenital fourth nerve palsy - Wikipedia

   en.wikipedia.org/wiki/Congenital_fourth_nerve_palsy

   Prism lenses set to make minor optical changes in the vertical alignment may be prescribed instead of or after surgery to fine-tune the correction. Prism lenses do not address torsional misalignment and this may limit their use in certain cases. An additional consideration of prism lenses is that they must be worn at all times.