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Landolt C. Lea test. logMAR chart. An eye chart is a chart used to measure visual acuity comprising lines of optotypes in ranges of sizes. Optotypes are the letters or symbols shown on an eye chart. [ 1] Eye charts are often used by health care professionals, such as optometrists, physicians and nurses, to screen persons for vision impairment.
An active shutter 3D system (a.k.a. alternate frame sequencing, alternate image, AI, alternating field, field sequential or eclipse method) is a technique of displaying stereoscopic 3D images. It works by only presenting the image intended for the left eye while blocking the right eye's view, then presenting the right-eye image while blocking ...
Stereoscopy is the production of the illusion of depth in a photograph, movie, or other two-dimensional image by the presentation of a slightly different image to each eye, which adds the first of these cues ( stereopsis ). The two images are then combined in the brain to give the perception of depth.
The human eye is a sensory organ in the visual system that reacts to visible light allowing eyesight. Other functions include maintaining the circadian rhythm, and keeping balance . Arizona Eye Model. "A" is accommodation in diopters. The eye can be considered as a living optical device. It is approximately spherical in shape, with its outer ...
Ophthalmology ( / ˌɒfθælˈmɒlədʒi /, OFF-thal-MOL-ə-jee) [ 1] is a clinical and surgical specialty within medicine that deals with the diagnosis and treatment of eye disorders. [ 2] A former term is oculism . An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. [ 3]
1. 3D film. A 3D or 3-D (three-dimensional) film or S3D (stereoscopic 3D) film [5] is a motion picture that enhances the depth cues seen by the viewer. The most common approach to the production of 3D films is derived from stereoscopic photography. In it, a regular motion picture camera system is used to record the images as seen from two ...
Orbis International. Orbis International is an international non-profit non-governmental organization (NGO) dedicated to saving sight worldwide. [ 1][non-primary source needed] Its programs focus on the prevention of blindness and the treatment of blinding eye diseases in developing countries through hands-on training, public health education ...
Eye Care Foundation ( ECF) is an international charity organisation active in over 20 countries in Asia, [ 4] Africa [ 5][ 6] and Latin-America. [ 7] ECF was founded when Eyecare Worldwide and Mekong Eye Doctors joined forces in 2008. [ 8] The two organizations shared the same objectives and working together as the current foundation has proved ...