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2. How to Remove Scratches From Glass Using Items You Already ...

   www.aol.com/don-t-panic-exactly-remove-221300328...

   If the scratches are too deep to buff out or you notice that the glass has a protective glaze that’s lifting, call a professional to assess the best repair method. They can glue, glaze, or recut ...

3. Surface imperfections (optics) - Wikipedia

   en.wikipedia.org/wiki/Surface_imperfections_(optics)

   A scratch is defined as a long and narrow defect that tears the surface of the glass or coating. [6] There are standards that refer to the degree of visibility, which is the relative brightness of the scratch. In these cases, there is also a standard for the lighting conditions used for the test.

4. Anti-scratch coating - Wikipedia

   en.wikipedia.org/wiki/Anti-scratch_coating

   Anti-scratch coating is a type of protective coating or film applied to an object's surface for mitigation against scratches. Scratches are small surface-level cuts left on a surface following interaction with a sharper object. Anti-scratch coatings provide scratch resistances by containing tiny microscopic materials with scratch-resistant ...

5. Corneal abrasion - Wikipedia

   en.wikipedia.org/wiki/Corneal_abrasion

   Common causes include being poked by a finger, walking into a tree branch, and wearing old contact lenses. [citation needed] A foreign body in the eye may also cause a scratch if the eye is rubbed. [citation needed] Injuries can also be incurred by "hard" or "soft" contact lenses that have been left in too long. Damage may result when the ...

6. Foggy lenses? The fix is finally here, and it's just $8 with ...

   www.aol.com/lifestyle/foggy-lenses-fix-finally...

   Send a set to all the glasses-wearers in your family, and they'll be forever in your debt. Gentle microfiber won't scratch lenses or irritate an anti-reflective coating. You can also use these ...

7. Astigmatism (optical systems) - Wikipedia

   en.wikipedia.org/wiki/Astigmatism_(optical_systems)

   Astigmatism causes difficulties in seeing fine detail. Astigmatism can be often corrected by glasses with a lens that has different radii of curvature in different planes (a cylindrical lens), contact lenses, or refractive surgery. [5] Astigmatism is quite common. Studies have shown that about one in three people suffers from it.

8. Optical manufacturing and testing - Wikipedia

   en.wikipedia.org/wiki/Optical_manufacturing_and...

   Precision lenses for use in applications such as lasers, interferometers, and holography have surfaces with a tenth of a wavelength (λ/10) tolerance or better. In addition to surface profile, a lens must meet requirements for surface quality (scratches, pits, specks, etc.) and accuracy of dimensions.

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