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2. Cover test - Wikipedia

   en.wikipedia.org/wiki/Cover_test

   A cover test or cover-uncover test is an objective determination of the presence and amount of ocular deviation. It is typically performed by orthoptists, ophthalmologists and optometrists during eye examinations . The two primary types of cover tests are: the alternating cover test. the unilateral cover test (or the cover-uncover test).

3. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   A PDF creator and virtual PDF printer for Microsoft Windows PDF-XChange: Proprietary: Yes: PDF Tools allows creation of PDFs from many types of source input (images, scans, etc.). The PDF-XChange print driver allows printing directly to a PDF. A "lite" version of the print driver is free for non-commercial (home and academic) use. PrimoPDF ...

4. Anisometropia - Wikipedia

   en.wikipedia.org/wiki/Anisometropia

   Amblyopia. Anisometropia is a condition in which a person's eyes have substantially differing refractive power. [1] Generally, a difference in power of one diopter (1D) is the threshold for diagnosis of the condition . [2] [3] Patients may have up to 3D of anisometropia before the condition becomes clinically significant due to headache, eye ...

5. Download, install, or uninstall AOL Desktop Gold - AOL Help

   help.aol.com/articles/aol-desktop-downloading...

   Uninstall Desktop Gold. Still need help? Call paid premium support at 1-800-358-4860 to get live expert help from AOL Customer Care. Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.

6. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   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]

7. 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 ...