The Eye: English Vocabulary List

a vascular layer of tissue in the eye, located between the retina and the sclera

"The choroid supplies blood to retina."

"The choroid is a dark layer of tissue in the eye that supplies blood to the retina."

(anatomy) the structure that encloses the inner surface of the eye which consists of the muscle which makes the eye move

"The ciliary body focuses the lens."

"The ciliary body produces aqueous humor and contains muscles that change the shape of the lens for focusing."

(anatomy) the transparent layer that covers the outside of the eyeball

"The cornea is transparent."

"The cornea helps focus light into the eye."

a small pit in the center of the retina that is responsible for sharp central vision

"The fovea provides sharp central vision."

"The fovea is a tiny pit in the retina responsible for sharp central vision needed for reading and driving."

a specialized area in the retina that provides central vision and sharp visual acuity

"The macula controls detailed vision."

"The macula is the central part of the retina that allows you to see fine details clearly."

(anatomy) the sensory membrane at the back of the eye that transmits light signals to the brain through optic nerves

"The retina detects light in the eye."

"The retina is the light sensitive layer at the back of the eye that converts light into electrical signals which are then sent to the brain through the optic nerve to create visual images."

the tough, outer layer of the eye that helps protect and maintain the shape of the eyeball

"The sclera is the eye's white part."

"The sclera is the white outer layer of the eyeball that provides protection and structure."

the clear, gel-like substance that fills the space between the lens and the retina in the eye

"The vitreous humor fills eyeball cavity."

"The vitreous humor is the clear gel that fills the space between the lens and the retina."

any of the several small canals through which tears pass from the tear gland to the eye or from the eye to the nose

"The tear duct drains tears."

"The tear duct drains tears from the eye into the nasal cavity which is why crying makes your nose run."

the whole structure of the eye

"The eyeball is a very delicate organ."

"The optometrist examined her eyeball using a bright light and a magnifying lens checking for signs of glaucoma or other hidden eye diseases."

any of the short hairs that grow along the edges of the eyelids

"She lost an eyelash."

"Her eyelashes are long and dark"

either of the upper or lower folds of skin that cover the eye when closed

"The eyelid closed slowly."

"His eyelid twitched several times because he was very tired and had not slept well for several nights in a row."

a small, round area on the retina where the optic nerve enters the eye

"The optic disc is the blind spot."

"The optic disc is the point where the optic nerve leaves the eye creating a natural blind spot in each eye."

a specialized photoreceptor cell found in the retina of the eye that is responsible for vision in low-light conditions

"Rod cells see in dim light."

"Rod cells in the retina help you see in dim light but do not detect color."

a specialized photoreceptor in the retina of the eye responsible for color vision and high visual acuity in bright light conditions

"Cone cells detect color vision."

"Cone cells in the retina detect color and fine detail in bright light conditions."

a transparent fluid in the eye that nourishes and maintains the shape of the anterior chamber

"Aqueous humor nourishes the eye lens."

"Aqueous humor is the clear fluid that fills the front part of the eye and maintains pressure."

the front part of the eye that contains clear fluid (aqueous humor), located between the cornea and the iris, helping to maintain the eye's shape and pressure

"The anterior chamber sits between cornea iris."

"The anterior chamber is the space between the cornea and the iris filled with aqueous humor."

the back part of the eye that contains clear fluid (aqueous humor), located between the iris and the lens, helping to maintain the eye's shape and pressure

"The posterior chamber sits behind iris."

"The posterior chamber is the narrow space behind the iris and in front of the lens."

a thin, transparent membrane that covers the front surface of the eye and the inner surface of the eyelids

"The conjunctiva covers the eye front."

"The conjunctiva is the thin clear membrane that covers the white part of your eye."

the jagged edge of the retina in the eye where it transitions to the ciliary body, marking the end of the retina's visual capabilities

"The ora serrata is retina's edge."

"The ora serrata is the jagged boundary between the retina and the ciliary body."

a specialized vessel in the eye responsible for draining the fluid from the anterior chamber

"Schlemm's canal drains aqueous humor."

"Schlemm's canal is a circular channel in the eye that drains aqueous humor from the anterior chamber."