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2. Maddox wing - Wikipedia

   en.wikipedia.org/wiki/Maddox_Wing

   Maddox wing. The Maddox Wing is an instrument utilized by ophthalmologists, orthoptists and optometrists in the measurement of strabismus (misalignment of the eyes; commonly referred to as a squint or lazy eye by the lay person). It is a quantitative and subjective method of measuring the size of a strabismic deviation by dissociation of the ...

3. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

4. Esotropia - Wikipedia

   en.wikipedia.org/wiki/Esotropia

   Esotropia is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [1] It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia is sometimes erroneously called ...

5. Strabismus - Wikipedia

   en.wikipedia.org/wiki/Strabismus

   Strabismus. Strabismus is a vision disorder in which the eyes do not properly align with each other when looking at an object. [2] The eye that is pointed at an object can alternate. [3] The condition may be present occasionally or constantly. [3]

6. Face shield vs. face mask: Which is better? - AOL

   www.aol.com/article/lifestyle/2020/07/14/face...

   “Although wearing a face shield with a mask is the optimal form of use, face shields are more breathable than cloth masks are,” says Jen Podany, CEO of Bluestone Sunshields. “[For example ...

7. Prism (optics) - Wikipedia

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

   Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.

8. Some prefer face shields to cloth masks. Experts weigh in. - AOL

   www.aol.com/article/lifestyle/2020/07/08/some...

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9. Can I use a face shield instead of a mask? - AOL

   www.aol.com/article/lifestyle/2020/09/01/can-i...

   However, those who want extra protection may want to wear a face shield in addition to a mask. Face shields have the added benefit of protecting your eyes and discouraging you from touching your ...