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27 Cards in this Set

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  • Back
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Accommodation
Focusing of the eye on a near object through relaxation of the ciliary muscle and thicking of the lens.
I can read the newspaper because of this.
Amblyopia
The loss of vision without any apparent disease of the eye.
You don't know why I lost my vision?
Ametropia
A refractive error in which the eye, when in a state of rest, does not focus the image of an object upon the retina; include hyperopia, myopia, and astigmatism.
Why I can't see.
Aniseikonia
A condition in which the ocular image of an object as seen by one eye differs so much in size or shape from that seen by the othere eye that the two images cannot be fused into a single impression.
How many fingers am I holding up?
Anisometropia
A condition in which the refractive error of one eye significantly differs from that of the other; each eye must have the same sign, i.e. both eyes are myopic or hyperopic.
one is bad, the other, worse.
Antimetropia
The refractive condition whereby the signs in each eye are opposite; one eye is hyperopic and the other myopic.
Monovision, naturally.
Aphakia
An absence of the crystalline lense of the eye.
I had that here a minute ago!
Aqueous humor
The clear water fluid that fills the anteiror and posterior chambers within the front part of the eye.
Eye ocean
Astigmatism
A refractive error that prevents the light rays from coming to a single focus on the retina because of different degrees of refraction in the various meridians of the eye.
A cylinder on the eye.
Cataract
A condition in which the crystalline lens of the eye, or its capsule, or both, become opaque, with consequent loss of visual acuity.
The eyes of an old dog
Choroid
The vascular intermediate coat that furnishes nourishment to other parts of the eyeball.
I'm hungry, says the eyeball.
Ciliary Body
That portion of the vascular coat between the iris and the choroid. It consists of the ciliary processes and the ciliary muscle.
Part of the muscle coat
Compound Hyperopic Astigmatism
The refractive error which results in two points of focus falling behind the retina.
Two points behind the eye ball
Compound myopic astigmatism
The refractive error which results in two points of focus falling in front of the retina.
Two point, before eye ball
Cornea
The clear transparent portion of the outer coat of the eyeball forming the covering of the aqueous chamber.
Clear outer coat
Crystalline Lens
A transparent colorless body suspended in the front part of the eyeball, between the aqueous and the vitreous, the function of which is to bring the rays of light to a focus on the retina.
The big magnifier.
Diplopia
The seeing of one object as two.
Wow, you didn't tell me you had a twin!
Emmetropia
The refractive condition of the normal eye, when the eye is at rest, the image of distant objects is brought to a focus on the retina.
20/20
Fovea
A small depression in the retina at the back of the eye; the part of the macula adapted for most acute vision.
X marks the spot
Fusion
The power of coordination by which the images received by the two eyes become a single image
Where two become one.
Glaucoma
An ocular disease having as its primary characteristic a sustained increase in intraocular pressure that the eye cannot withstand without damage to its structure or impairment of its function.
Breaking under pressure
Hyperopia
A refractive error in which, because the eyeball is short or the refractive power of the lens is weak, the point of focus for rays of light from distant objects falls behind the retina; accommodation to increase the refractive power of the lens is necessary for distance vision as well as near vision.
Stop following me!
Iris
The colored circular membrane suspended behind the cornea and immdeidately in front of the lens. The iris regulates the amount of light entering the eye by changing the size of the pupil.
Lifesaver of sight
Irregular astigmatism
A refractive condition caused by a cornea which is damaged and irregular so that rays of light come to many focal points on the retina, is not correctable by cylinders.
traffic accident cornea
Iseikonic lenses
Spectacle lenses specially designed to manipulate image size when dissimilar sizes makes it difficult or impossible for fusion to occur; such as in aniseikonia.
Forcing two to become one
Macula
A small area of the retina that surrounds the fovea and that with the fovea, comprises the area of the retina that gives distinct vision.
Determines if you can see the last golf swing
Mixed Astigmatism
The refractive condition in which the light comes to two points of focus where one point is in front of the retina, and the other is behind the retina.
This astigmatism cannot make up its mind.