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2. Four prism dioptre reflex test - Wikipedia

   en.wikipedia.org/wiki/Four_prism_dioptre_reflex_test

   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 induced which is the driving force ...

3. Esotropia - Wikipedia

   en.wikipedia.org/wiki/Esotropia

   Esotropia (from Greek eso 'inward' and trope 'a turning' [1]) 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. [2] It is the opposite of exotropia and usually involves more severe axis deviation than ...

4. Maddox rod - Wikipedia

   en.wikipedia.org/wiki/Maddox_rod

   The strength of the prism is increased until the streak of the light passes through the centre of the prism, as the strength of the prism indicates the amount of deviation present. The Maddox rod is a handheld instrument composed of red parallel plano convex cylinder lens , which refracts light rays so that a point source of light is seen as a ...

5. Prism fusion range - Wikipedia

   en.wikipedia.org/wiki/Prism_fusion_range

   The prism fusion range (PFR) or fusional vergence amplitude is a clinical eye test performed by orthoptists, optometrists, and ophthalmologists to assess motor fusion, specifically the extent to which a patient can maintain binocular single vision (BSV) in the presence of increasing vergence demands. Motor fusion is largely accounted to ...

6. Fixation disparity - Wikipedia

   en.wikipedia.org/wiki/Fixation_disparity

   A fixation disparity is not constant within a certain observer, but can vary depending on the viewing conditions. If test prisms with increasing amount are placed in front of the observer’s eyes, the fixation disparity changes in the eso direction with base-in prisms and in the exo direction with base-out prisms (Fig. 3).

7. New Baby Manatee Needs 'Boost' From Mom While Learning ... - AOL

   www.aol.com/baby-manatee-needs-boost-mom...

   As you can see in this video, mantle babies may struggle to swim at first, and need boosts from their mom to get where they are going. Manatees nurse for a year or two and stay very close to their ...

8. Infantile esotropia - Wikipedia

   en.wikipedia.org/wiki/Infantile_esotropia

   Infantile esotropia is an ocular condition of early onset in which one or either eye turns inward. It is a specific sub-type of esotropia and has been a subject of much debate amongst ophthalmologists with regard to its naming, diagnostic features, and treatment.

9. What Causes a Cobblestone Throat? - AOL

   www.aol.com/causes-cobblestone-throat-123000038.html

   Causes. Cobblestone throat occurs when there's swelling and inflammation in the tonsils and adenoids. These glands sit at the back of the throat and protect the respiratory passages from viruses ...