Chapter 15 Flashcards
Amblyopia
dullness of vision
Aphakia
condition in which the crystalline lens is absent
Anisoscoria
condition in which the pupils are unequal in size
Astigmatism
defect in the refractive powers of the eye in which a ray of light is not focused on the retina but is spread over an area
Beta Blocker
decrease production of intraocular fluid
Blepharitis
inflammation of the hair follicles and glans along the edges of the eyelids
Blepharptosis
drooping of the upper eyelid
Cataract
opacity of the crystalline lens or its capsule; most often occurs in older adults
Chalazion
small, hard, painless cyst of a sebaceous gland of the eyelid
Cholinergic
increases drainage of intraocular fluid
Conjunctivitis
inflammation of the conjunctiva that can be caused by allergens, irritating substances, bacteria, viruses, or sexually transmitted infections
Cycloplegia
paralysis of the ciliary body
Dacryoma
tumor-like swelling caused by obstruction of the tear ducts
Diplopia
double vision
Emmetropia
normal or perfect vision
Entropion
turning inward of the margin of the lower eyelid
Enucleation
process of removing an entire part or mass without rupture, as the eyeball from its orbit
Esotropia
condition in which the eye or eyes turn inward; crossed eyes
Exotropia
turning outward of one or both eyes
Glaucoma
a group of eye diseases that produced increased intraocular pressure caused by a backup of fluid in the eye
Gonioscope
instrument used to examine the angle of the anterior chamber of the eye
Hyperopia
farsightedness
Keratoconjunctivitis
inflammation of the cornea and the conjunctiva
Mitotic
pertaining to an agent that causes the pupil to contract
Mydriatic
pertaining to an agent that causes the pupil to dilate
Myopia
nearsightedness
Nystagmus
involuntary, constant, rhythmic movement of the eyeball
Nyctalopia
night blindness
Ophthalmoscope
medical instrument used to examine the interior of the eye
Orthoptics
study and treatment of defective binocular vision resulting from defects in ocular musculature
Phacoemulsification
process of using ultrasound to disintegrate a cataract by inserting a needle through a small incision and aspirating the disintegrated cataract
Phacolysis
surgical destruction and removal of the crystalline lens in the treatment of a cataract
Photocoagulation
process of altering proteins in tissue by the use of light energy such as a laser beam
Photophobia
unusual intolerance to light
Radial Keratomy
surgical procedure that can be performed to correct nearsightedness
Retinal Detachment
separation of the retina from the choroid layer of the eye that can be caused by trauma or can occur spontaneously
Retinitis Pigmentosa
chronic progressive disease marked by bilateral primary degeneration of the retina beginning in childhood and leading to blindness by middle age
Sty(e)
inflammation of one or more of the sebaceous glands of the eyelid
Tonometer
medical instrument used to measure intraocular pressure
Trichiasis
condition of in-growing eyelashes that rub against the cornea, causing a constant irritation to the eyeball
Xenophthalmia
inflamed eye condition caused by foreign material
Xerophthalmia
eye condition in which the conjunctiva is dry
