EYE
retina
A layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed
retina
A multilayered sensory tissue that lines the back of the eye and contains the receptor cells to detect light.
vitreous body
A soft, jellylike substance that fills the vitreous chamber of the eyeball, lying between the lens and the retina.
retina
A tissue of special nerve endings lining the back of the eye that are sensitive to light
pupil
Allows light to enter the eye
cornea
Anatomy of the eye: outermost transparent layer protecting the eye; assists in light refraction
vitreous body
Clear gel that fills the space between the lens and retina
cornea
Clear membrane at the front of the globe covering the iris, pupil, and anterior chamber. Responsible for 60% of the eyes focusing power. Contains 5 layer
retina
Contains photoreceptors
retina
Contains sensory receptors that process visual information and sends it to the brain
crystalline lens
Enclosed in a thin, elastic capsule and positioned between the Iris and the Vitreous Humor. As you get older (45+) the lens becomes less flexible, grows in size and begins to loose its optical transparency. Presbyopia.
cornea
Fibrous layer of clear tissue that extends over the anterior portion of the eye and is continuous with the white of the eye
vitreous body
Fluid between lens & retina of eye
crystalline lens
Forty percent of the optical focusing system, immediately behind the iris, aka Lens
retina
Innermost layer of the eye
retina
Light sensitive layer of the eye; contains rods and cones
pupil
Opening in the center of the iris
cornea
Protects the eye
crystalline lens
Removal of a cataract may restore useful vision. This involves removal of the
pupil
Small opening in the middle of the iris
retina
Soft inner tissue on back wall that contains sensory receptors (colors, etc.)
pupil
The adjustable opening in the center of the eye through which light enters.
cornea
The clear tissue that covers the front of the eye
vitreous body
The jellylike substance filling the posterior cavity of the eye is the ______________.
crystalline lens
The lens inside the eye that enables the changing of focus.
retina
The light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information.
pupil
The opening in the iris, which admits light into the interior of the vertebrate eye; muscles in the iris regulate its size.
retina
The sensory membrane that lines most of the large posterior chamber of the vertebrate eye, is composed of several layers including one containing the rods and cones, and functions as the immediate instrument of vision by receiving the image formed by the lens and converting it into chemical and nervous signals which reach the brain by way of the optic nerve.
cornea
Transparent frontal aspect of the eye, covering both the iris and pupil
crystalline lens
Transparent, flexible structure that sits behind the iris. It helps to refract light to be focused on the retina.
crystalline lens
a clear structure in the eye located between the iris and the vitreous humor; responsible for accommodation (adjustments to refract, or bend, the incoming light rays on the fovea centralis of the retina).
crystalline lens
a doubly convex, transparent body in the eye, situated behind the iris, that focuses incident light on the retina.
vitreous body
a transparant jelly like substance filling the interior of the eyeball
cornea
at the front of the eye, bends and focuses light rays
vitreous body
gelatinous material that fills posterior cavity and helps hold the retina in place
cornea
protects and bends incoming light rays/focus
vitreous body
soft, jelly-like substance that fills the eyeball and holds the shape of the eye; vitreous humor