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retina    音标拼音: [r'ɛtənə]
n. 视网膜

视网膜

retina
网膜

retina
n 1: the innermost light-sensitive membrane covering the back
wall of the eyeball; it is continuous with the optic nerve

Retina \Ret"i*na\, n. [NL., from L. rete a net. Cf. {Reticule}.]
(Anat.)
The delicate membrane by which the back part of the globe of
the eye is lined, and in which the fibers of the optic nerve
terminate. See {Eye}.
[1913 Webster]

Note: The fibers of the optic nerve and the retinal blood
vessels spread out upon the front surface of the
retina, while the sensory layer (called Jacob's
membrane), containing the rods and cones, is on the
back side, next the choroid coat.
[1913 Webster]


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  • Retina of the Eye: What It Is, Function Anatomy - Cleveland Clinic
    The retina is the layer inside your eye that detects light and converts it into signals your brain can use It’s critical for your vision
  • Retina Consultants of New Mexico | Retinal Care
    Retina Consultants of New Mexico is a specialized retinal clinic dedicated to diagnosing, managing, and treating complex diseases of the retina and vitreous, the most delicate and vision-critical structures of the eye Our team provides a full range of advanced medical, laser, and surgical retinal care for patients throughout New Mexico, helping preserve and restore vision with compassionate
  • Retina - Wikipedia
    The retina (from Latin rete 'net'; pl retinae or retinas) is the innermost, light-sensitive layer of tissue of the eye [1] The optics of the eye create a focused two-dimensional image of the visual world on the retina, which then processes that image within the retina and sends nerve impulses along the optic nerve to the visual cortex to create visual perception [1] The retina serves a
  • Retinal diseases - Symptoms and causes - Mayo Clinic
    Retinal diseases vary widely, but most of them cause visual symptoms Retinal diseases can affect any part of your retina, a thin layer of tissue on the inside back wall of the eye The retina contains millions of light-sensitive cells, called rods and cones, and other nerve cells that receive and organize visual information The retina sends this information to the brain through the optic
  • Retina: Anatomy, Functions, and Conditions - Vision Center
    The retina is an essential part of the anatomy of the eye It’s a light-sensitive layer at the back of the eye that sends electrical impulses to the brain
  • Retina: Function, Location, Health Problems, and More - WebMD
    Find out what you need to know about the retina, including where it's located, what it does, and potential health problems
  • Retina | Definition, Function, Facts | Britannica
    Retina, layer of nervous tissue that covers the inside of the back two-thirds of the eyeball, in which stimulation by light occurs, initiating the sensation of vision The retina is actually an extension of the brain, formed embryonically from neural tissue and connected to the brain proper by the optic nerve
  • Retina - Definition and Detailed Illustration - All About Vision
    Retina definition The retina is the sensory membrane that lines the inner surface of the back of the eye It's composed of several layers, including one that contains specialized cells called photoreceptors There are two types of photoreceptor cells in the human eye — rods and cones
  • Retinal Disorders | Retina | Macular Degeneration - MedlinePlus
    The retina is a layer of tissue in the back of your eye It senses light and sends images to your brain Learn about retinal disorders and treatments
  • Retina: Anatomy, Function, and Associated Conditions
    The retina is a nerve-filled tissue layer that lines the inner back wall of the eyeball It allows you to perceive light, color, and fine details





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