Chapter 17: Sense Organs Eye and Ear: Pathology and Clinical Procedures Flashcards
astigmatism
Defective curvature of the cornea or lens of the eye
hyperopia
hypermetropia
Farsightedness
myopia
Nearsightedness
presbyopia
Impairment of vision as a result of old age
cataract
Clouding of the lens, causing decreased vision
chalazion
Small, hard, cystic mass (granuloma) on the eyelid
diabetic retinopathy
Retinal effects of diabetes mellitus include microaneurysms, hemorrhages, dilation of retinal veins, and neovascularization (new blood vessels form in the retina)
exudates
Fluid leaking from the blood
glaucoma
Increased intraocular pressure results in damage to the retina and optic nerve with loss of vision
tonometry
Instrument applied externally to the eye after a local anesthetic used to diagnose glaucoma
trabeculoplasty
Laser therapy to improve glaucoma
blepharitis
Inflammation of an eyelid
dacryocystitis
Blockage, inflammation and infection of a nasolacrimal duct and lacrimal sac
ectropion
Outward sagging and eversion of the eyelid, leading to improper lacrimation and corneal drying and ulceration
entropion
Inversion of the eyelid, causing the lashes to rub against the eye
hordeolum
sty or stye
Localized, purulent, inflammatory staphylococcal infection of a sebaceous oil-producing gland in the eyelid
ptosis
Dropping of upper lid margin from neuromuscular problems or trauma
xanthelasma
Raised yellowish plaque on eyelid caused by lipid disorder
macular degeneration
Progressive damage to the macula of the retina
nystagmus
Repetitive rhythmic movements of one or both eyes
retinal detachment
Two layers of the retina separate from each other
photopsia
Bright flashes of light
floaters
Black spots or filmy shapes
strabismus
Abnormal deviation of the eye