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  2. Prism cover test - Wikipedia

    en.wikipedia.org/wiki/Prism_Cover_Test

    The prism cover test ( PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. [1] It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]

  3. Category:Corrective lenses - Wikipedia

    en.wikipedia.org/wiki/Category:Corrective_lenses

    Corrective lenses. A corrective lens is a lens worn on or before the eye. They are used to treat myopia, hypermetropia, astigmatism, and presbyopia .

  4. 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.

  5. Mamiya RZ67 - Wikipedia

    en.wikipedia.org/wiki/Mamiya_RZ67

    The Mamiya RZ67 is a professional medium format single-lens reflex camera manufactured by Mamiya. There are three successive models: the RZ67 Professional (released in 1982), RZ67 Professional II (released in 1993) and RZ67 Professional IID (released in 2004). It is primarily designed for studio use, but can also be used in the field.

  6. Optical head-mounted display - Wikipedia

    en.wikipedia.org/wiki/Optical_head-mounted_display

    Optical head-mounted display. A man controls Google Glass using the touchpad built into the side of the device. An optical head-mounted display ( OHMD) is a wearable device that has the capability of reflecting projected images as well as allowing the user to see through it. In some cases, this may qualify as augmented reality (AR) technology.

  7. 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 ...