Eye

water

eyelid

to join together

cornea

iris (colored circle)

tear

eye 

lens

light

old age

glassy

condition of vision

fluid-filled space between the cornea and iris

watery liquid secreted at the ciliary body that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens

vascular layer beneath the sclera that provides nourishment to the outer portion of the retina

muscle that controls the power of the lens

smooth muscle that contracts to assist in near-vision capability

epithelial tissue folds on the inner surface of the ciliary body that secrete aqueous humor

mucous membrane that lines the eyelids and outer surface of the eyeball

transparent anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to bend light to focus images

pinpoint depression in the center of the macula lute that is the site of sharpest vision

interior surface of the eyeball

gland that secretes tears

tubes that carry tears to the lacrimal sac

structure that collects tear before emptying into the nasolacrimal duct

transparent structure behind the pupil that bends and focuses light rays on the retina

capsule that encloses the lens

responsible for central vision

passageway for tears from the lacrimal sac into the nose

exit site for retinal nerve fibers

nerve responsible for carrying impulses for the sense of sight from the retina to the brain

space between the back of the iris and the front of the vitreous filled with aqueous fluid

innermost layer that perceives and transmits light into the optic nerve

cells within the retina that respond to bright light

cells within the retina that respond to dim light

outer coat extending from the cornea to the optic nerve 

jelly-like mass filling the inner chamber between the lens and retina that gives bulk to the eye

involuntary contraction of the muscles surrounding the eye

double vision

abnormal protrusion of one or both eyeballs 

secretion of tears

rapid movement of the eyeball

extreme sensitivity to the light

blind spot in vision

defects in the bending of light as it enters the eye

distorted vision that prevents light rays from coming to a single focus on the retina

difficulty seeing close objects 

difficulty seeing distend objects 

impaired vision owing to old-age 

ability of the eye to adjust focus on near objects

decreased vision in early life 

absence of lens

inflammation of the eyelid

drooping of the eyelid

inflammation of a meibomian gland 

clouding of the lens 

pinkeye 

inflammation of the lacrimal gland 

inflammation of the tear sac 

decrease of the retina in diabetics characterized by capillary leakage, bleeding, and new vessel formation, leading to loss of vision 

outward turning of the rim of the eyelid

inward turning of the rim of the eyelid 

increased intraocular pressure that results in damage to the optic nerve, producing defects in vision

an acute infection of sebaceous gland of the eyelid

inflammation of the cornea 

inflammation of the iris 

breakdown of the tissues in the macula 

when the natural lens is replaced with an artificial lens implant 

growth of conjunctival tissue that extends into the cornea 

separation of the retina from the underlying epithelium 

crossed eyes

inflammation of the sclera

misdirected eyelashes that rub on the conjunctiva or cornea 

measure of the ability to see from a specified distance 

visualization of retinal and choroidal vessels made as fluorescein dye that is injected and circulates through the eye 

use of an ophthalmoscope to view the interior of the eye 

measurement of refractive errors using a phoropter 

instrument that holds corrective lenses in front of the eye to determine optical correction 

use of a tabletop microscope to examine the eye 

sonography use of high-frequency sound waves to detect disease within the eye 

use of a tonometer to measure intraocular pressure 

surgical repair of an eyelid

excision of a cloudy lens from the eye

excision of an eyeball

excision of a portion of iris tissue 

incision into the iris to allow for drainage of aqueous humor from the posterior to anterior chamber 

corneal transplant 

use of a laser to make incisions or destroy tissues

technique using the excimer laser to reshape the surface of the cornea

implantation of an artificial lens 

introduction of a medicated solution in the eye

washing the eye with water or other fluid