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Hunayn ibn Ishaq 's Book of the Ten Treatises of the Eye ( Arabic: كتاب العشر مقالات في للعين, Kitab al-Ashr Maqalat fil-Ayn) is a 9th-century theory of vision based upon the cosmological natures of pathways from the brain to the object being perceived. This ophthalmic composition is heavily derived from Galen 's De ...
Diagram. A diagram is a symbolic representation of information using visualization techniques. Diagrams have been used since prehistoric times on walls of caves, but became more prevalent during the Enlightenment. [1] Sometimes, the technique uses a three-dimensional visualization which is then projected onto a two-dimensional surface.
assess degree of binocular vision. The Worth Four Light Test, also known as the Worth's four dot test or W4LT, is a clinical test mainly used for assessing a patient's degree of binocular vision and binocular single vision. Binocular vision involves an image being projected by each eye simultaneously into an area in space and being fused into a ...
File:Diagram of eye evolution.svg. Size of this PNG preview of this SVG file: 429 × 599 pixels. Other resolutions: 172 × 240 pixels | 344 × 480 pixels | 550 × 768 pixels | 734 × 1,024 pixels | 1,467 × 2,048 pixels | 584 × 815 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.
The human eye, showing the iris and pupil. In 1802, philosopher William Paley called it a miracle of " design ." In 1859, Charles Darwin himself wrote in his Origin of Species, that the evolution of the eye by natural selection seemed at first glance "absurd in the highest possible degree". [3] However, he went on that despite the difficulty in ...
Heterophoria is an eye condition in which the directions that the eyes are pointing at rest position, when not performing binocular fusion, are not the same as each other, or, "not straight". This condition can be esophoria, where the eyes tend to cross inward in the absence of fusion; exophoria, in which they diverge; or hyperphoria, in which ...
File:Schematic diagram of the human eye.svg. Size of this PNG preview of this SVG file: 383 × 423 pixels. Other resolutions: 217 × 240 pixels | 435 × 480 pixels | 695 × 768 pixels | 927 × 1,024 pixels | 1,854 × 2,048 pixels. Original file (SVG file, nominally 383 × 423 pixels, file size: 311 KB) This is a file from the Wikimedia Commons.