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  2. Optics and vision - Wikipedia

    en.wikipedia.org/wiki/Optics_and_vision

    The human eye is an organ which reacts to light for several purposes. As a conscious sense organ, the eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors. [3]

  3. Optometry - Wikipedia

    en.wikipedia.org/wiki/Optometry

    Optometry is a healthcare profession that is autonomous, educated, and regulated (licensed/registered), and optometrists are the primary healthcare practitioners of the eye and visual system who provide comprehensive eye and vision care, which includes refraction and dispensing, detection/diagnosis and management of disease in the eye, and the ...

  4. Eye care professional - Wikipedia

    en.wikipedia.org/wiki/Eye_care_professional

    Ophthalmology (/ˌɒfθælˈmɒlədʒi/ OFF-thal-MOL-ə-jee) is a surgical subspecialty within medicine that handles the diagnosis and treatment of eye disorders.[1] [2] Ophthalmologists are physicians (M.D./D.O/have a doctorate in medicine) that undergo subspecialty training in medical and surgical eye care. [3]

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  6. Orthoptics - Wikipedia

    en.wikipedia.org/wiki/Orthoptics

    Orthoptics is a profession allied to the eye care profession. Orthoptists are the experts in diagnosing and treating defects in eye movements and problems with how the eyes work together, called binocular vision. These can be caused by issues with the muscles around the eyes or defects in the nerves enabling the brain to communicate with the eyes.

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  8. Optical transfer function - Wikipedia

    en.wikipedia.org/wiki/Optical_transfer_function

    Transfer function and example image of an ideal, optical-aberration-free (diffraction-limited) imaging system. It can be read from the plot that the contrast gradually reduces and reaches zero at the spatial frequency of 500 cycles per millimeter, in other words the optical resolution of the image projection is 1/500 th of a millimeter, or 2 ...

  9. Optics - Wikipedia

    en.wikipedia.org/wiki/Optics

    The light then passes through the main body of fluid in the eye—the vitreous humour, and reaches the retina. The cells in the retina line the back of the eye, except for where the optic nerve exits; this results in a blind spot. There are two types of photoreceptor cells, rods and cones, which are sensitive to different aspects of light. [103]