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2. Eye care professional - Wikipedia

   en.wikipedia.org/wiki/Eye_care_professional

   Ophthalmology (/ˌɒfθælˈmɒlədʒi/ OFF-thal-MOL-ə-jee) is a surgical subspecialty within medicine that handles the diagnosis and treatment of eye disorders.[1] [2] Ophthalmologists are physicians (M.D./D.O/have a doctorate in medicine) that undergo subspecialty training in medical and surgical eye care. [3]

3. Aberrations of the eye - Wikipedia

   en.wikipedia.org/wiki/Aberrations_of_the_eye

   Besides, there is strong evidence of compensation for aberrations between the cornea and intraocular optics in cases of astigmatism (horizontal/vertical) and horizontal coma. The balance of corneal and internal aberrations is a typical example of creating two coupling optical systems.

4. Deck prism - Wikipedia

   en.wikipedia.org/wiki/Deck_prism

   The deck prism laid flush into the deck, the glass prism refracted and dispersed natural light into the space below from a small deck opening without weakening the planks or becoming a fire hazard. In normal usage, the prism hangs below the overhead and disperses the light sideways; the top is flat and installed flush with the deck, becoming ...

5. Lens - Wikipedia

   en.wikipedia.org/wiki/Lens

   A burning apparatus consisting of two biconvex lens. A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis.

6. Triangular prism - Wikipedia

   en.wikipedia.org/wiki/Triangular_prism

   In geometry, a triangular prism or trigonal prism [1] is a prism with 2 triangular bases. If the edges pair with each triangle's vertex and if they are perpendicular to the base, it is a right triangular prism. A right triangular prism may be both semiregular and uniform. The triangular prism can be used in constructing another polyhedron.

7. Crown glass (optics) - Wikipedia

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

   The borosilicate glass Schott BK7 (glass code 517642) is an extremely common crown glass, used in precision lenses. Borosilicates contain about 10% boric oxide, have good optical and mechanical characteristics, and are resistant to chemical and environmental damage.