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2. Porro prism - Wikipedia

   en.wikipedia.org/wiki/Porro_prism

   Porro prisms are most often used in pairs, forming a double Porro prism. A second prism rotated 90° with respect to the first, is placed such that light will traverse both prisms. The net effect of the prism system is a beam parallel to but displaced from its original direction, with the image rotated 180°. A double Porro system provides four ...

3. Artificial tears - Wikipedia

   en.wikipedia.org/wiki/Artificial_tears

   Specialty. ophthalmology. [ edit on Wikidata] Artificial tears are lubricating eye drops used to relieve dryness and irritation of the ocular surface. [1] Dry eye syndrome ( keratoconjunctivitis sicca) is a common ocular surface disorder and is characterized by disruption of the tear film and increased inflammation. [2]

4. Travoprost - Wikipedia

   en.wikipedia.org/wiki/Travoprost

   Travoprost, sold under the brand name Travatan among others, is a medication used to treat high pressure inside the eye including glaucoma. [4] Specifically it is used for open angle glaucoma when other agents are not sufficient. [5] [4] It is used as an eye drop. [4] Effects generally occur within two hours.

5. Prism sight - Wikipedia

   en.wikipedia.org/wiki/Prism_sight

   A prism sight or prismatic sight, sometimes also called prism scope or prismatic scope, is a type of telescopic sight which uses a reflective prism for its image-erecting system, instead of the series of relay lenses found in traditional telescopic sights. The use of prisms makes it possible to construct a shorter and lighter sight, or with an ...

6. Four prism dioptre reflex test - Wikipedia

   en.wikipedia.org/wiki/Four_prism_dioptre_reflex_test

   assess alignment of both eyes. The Four Prism Dioptre Reflex Test (also known as the 4 PRT, or 4 Prism Dioptre Base-out Test) is an objective, non-dissociative test used to prove the alignment of both eyes (i.e. the presence of binocular single vision) by assessing motor fusion. [1] Through the use of a 4 dioptre base out prism, diplopia is ...

7. CDC warns that tainted recalled eyedrops now linked to more ...

   www.aol.com/cdc-warns-tainted-recalled-eyedrops...

   Those drops have since been recalled, ... According to the CDC, people should seek medical care if they have symptoms of an eye infection, including: Yellow, green or clear discharge from the eye.