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22 Cards in this Set

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- reduced vision in an eye not correctable by a manifest refraction and with no obvious pathologic or structural cause. The vision in the infected eye is worse than in the fellow-eye
amblyopia
- an abnormal occular condition characterized by a difference in the refractive powers of the eyes
anisometropia
- a blindness resulting from a defect in or the absence of one or both eyes. 1. suffixes meaning nonuse or arrested development of the eye
anopia
- an opaque ring, gray to white in color, that surrounds the periphery of the cornea. It is caused by deposits of cholesterol in the cornea or hyaline degeneration and occurs primarily in older persons.
arcus senilis
- an abnormal condition of the eye in which the light rays cannot be focused clearly in a point on the retina because the spheric curve of the cornea or lens is not equal in all meridians. Vision is typically blurred; if uncorrected, it often results in visual discomfort or asthenopia. the person cannot accommodate to correct the problem. The condition usually may be corrected with contact lenses or with eyeglasses ground to neutralize the condition.
astigmatism
- pinpoint white or light yellow spots on the iris of a child with Down syndrome. Occasionally, they are seen in normal infants.
Brushfield's spots
- an abnormal progressively condition of the lens of the eye, characterized by loss of transparency. A yellow, brown, or whie opacity can be observed within the lens, behind the pupil. Most are caused by degenerative changes, often occuring after 50 years of age, tendency to develop this is inherited. Trauma, such as a puncture wound, may result in cataract formation. Less often, exposure to such poisons as dinitrophenol or napthalene causes them.
cataract
- an inflammatory condition of the eye, usually as a result of parasitic or bacterial infection. Characterized by blurred vision, photophobia, and distorted images.
chorioretinitis
- a congenital or pathologic defect in the ocular tissue of the body, usually affecting the iris, ciliary body, or chorid by forming a cleft that extends inferiorly. This condition is usually the result of the failure o f part of the fetal fissure to close.
coloboma
- inflammation of the conjunctiva, caused by bacterial or viral infection, allergy, or environmental factors. Red eyes, thick discharge, sticky eyelids in the morning ,and inflammation without pain are characteristic results of the most common cause, bacteria. The cause may be found by microscopic examination or bactriologic culture of the discharge. Choice of treatment depends on the causative agent and may include antibacterial agents, antibiotics, corticosteroids. Also called pink eye
conjuctivitis
- ? Book has it as cotton wool exudate or spots - a white, fluffy-appearing lesion, an infarction of the nerve fiber layer, observed on the retina of patients with certain systemic conditions, such as diabetes, acquired immunodeficiency syndrome, hypertension, and lupus. Can also be observed in retinal infections.
cotton wool patches
- double vision caused by defective function of the extracular muscles or a disorder of the nerves that innervate the muscles. it occurs when the object of fixation falls on the fovea in one eye and a nonfoveal point in the other eye when the object of fixation falls on two noncorresponding points. Also called ambliopia
diplopia
- small yellowish hyaline deposits that develop beneath the retinal pigment epithelium, sometimes appearing as nodules within the optic nerve head. They tend to occur most frequently in persons older than 60 years of age and are commonly associated with age related macular degeneration
drusen bodies
- a state of normal vision characterized by the proper relationship between the refractive system of the eyeball and its axial length. This correlation ensures that light rays entering the eye parallel to the optic axis are focused exactly on the retina.
emmetropia
- tearing - watering of the eye usually caused by excessive tear production, resulting from strong emotion, infection, or mechanic irritation by a foreign body. If the normal amount of liqud tears is produced but not drained into the lacrimal punctum at the nasal border of the eye, tear overflow will occur. If the lacrimal punctum, sac, canaliculi, or nosolacrimal duct blocked, tears also will overflow.
epiphora
- a medial deviation of one eye, relative to the other fixating eye such that fusion is not maintained. Also called convergent squint, convergent strabismus, internal strabismus.
esotropia
: a gray-green to red gold pigmented ring at the outer margin of the cornea (limbal border), pathognomonic of hepatolenticular degeneration, a rare progressive disease caused by a defect in copper metabolism and transmitted as an autosomal recessive trait. The disease is characterized by cerebral degenerative changes, liver cirrhosis, splenomegaly, involuntary movements, muscle rigidity, psychic disturbances, and dysphagia. (pic on pg. 1029); also see Wilson’s disease
Kayser-Fleisher Rings
: a condition of nearsightedness caused by the elongation of the eyeball or by an error in refraction so that parallel rays are focused in front of the retina.
Myopia
: to pierce; a hole or opening made through the entire thickness of a membrane or other tissue or material
Perforation
: pertaining to the area surrounding the socket of the eye
Periorbital
: a yellowish spot of proliferation on the bulbar conjunctiva near the junction of the sclera and cornea, usually on the nasal side, likely related to ultraviolet light exposure and chronic environmental irritation. It is seen in elderly people with an extensive history of sun exposure
Pinguecula
: a refractive condition in which the accommodative ability of the eye cannot meet the accommodative demand for near work. It results from a loss of elasticity of the lens of the eye. The condition commonly develops with advancing age, with the first symptoms appearing about age 40
Presbyopia