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| black circular opening in the center of the iris of the eye |
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| tough white fibrous tissue covering the white of the eye, extending from the optic nerve to the cornea. |
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| clear outermost layer of the eye. It covers the pupil, iris, and anterior chamber |
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| The round pigmented contractile membrane of the eye that is perforated in the center by the pupil. almost entirely of connective tissue and smooth muscle fibers. |
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A smooth muscle of the ciliary body of the eye, consisting of circular fibers and radiating fibers, and whose action changes the shape of lens in the process of accommodation.
- Relax = flatten lens = allow seeing faraway objects
- Contract = thicken & shorten lens = allow seeing nearby objects |
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| biconvex structure (outwardly curved on both sides) |
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| space inside the eye between the iris and the cornea filled with aqueous humor. |
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| space behind the iris and in front the ciliary body containing vitreous humor |
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| innermost coat of the posterior part of the eyeball that receives the image produced by the lens, is continuous with the optic nerve, and consists of several layers, one of which contains the rods and cones that are sensitive to light. |
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| oval-shaped highly pigmented yellow spot near the center of the retina of the human eye |
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| a small pit that contains the largest concentration of cone cells in the eye and is responsible for central, high resolution vision |
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photoreceptors in the retina that are Sensitive to light but not color
- More dense in number
- Work more actively in dim light |
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photoreceptors in the retina that are Sensitive to light but not color
- More dense in number
- Work more actively in dim light |
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| A nerve that originates from the retina, passes out of the eye socket reaching the brain |
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| clear gel that occupies the space behind the lens and before the retina at the back of the eye |
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| a transparent, gelatinous fluid similar to plasma, but containing low protein concentrations. It is secreted from the ciliary body. |
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