Lab Quiz 2 Flashcards
Cataracts
Increased opacity of the lens
One of the most common eye disorders
Cloudy pupils indicate cataracts
Hyperopia
Farsightedness
Rays of light enter the eye and focus behind the retina
People are able to see distant objects but not close ones
Myopia
Nearsightedness
Rays of light enter the eye and focus in front of the retina
People are able to see close objects but not distant objects
Strabismus
Condition in which both eyes do not focus on an object simultaneously
Glaucoma
Increased intraocular pressure
Obstruction of the outflow of aqueous humor causes this
With out treatment this leads to blindness
Retinopathy
Non inflammatory eye disorder resulting from changes in retinal blood vessels
Presbyopia
Impaired near vision in middle age and older adults
Caused by loss of elasticity of the lens
Normal size of the pupil
3 to 7 mm in diameter
How to test pupillary reflexes (light and accommodation)
Ask the patient to look straight ahead bring the penlight from the side of his or her face directing the light into their pupil. It should constrict and the opposite pupil constrict con sensually
Accommodation the patient gazes at a distant object (far wall) and then at a test object (finger or pencil) held 4 inches from the bridge of their nose the pupils should converge and accommodate by constricting when looking at close objects
PERRLA
Use if assessment of pupillary reaction is normal in all test
Pupils equal, round, reactive to light, and accommodation
Normal responses that determine a patients level of consciousness
Responds to questions quickly and expresses ideas logically
Glasgows coma scale
Use when a patient has a lower consciousness. Check to see if the patient has any sensory losses before starting. The higher the score the better the persons neurological function.
Delirium
Is an acute mental disorder that occurs among hospitalized patients most often presents itself within the first 48 to 72 hours of hospital admission. Characterized by Confusion disorientation and restlessness. Often labeled with “sundown syndrome” because patients get worse at night. Condition often reverses when it’s correctly assessed and treated.
Jaundice
Increased deposits of bilirubin in tissues
Yellow orange discoloration
Erythema
Red discoloration can indicate circulatory changes
Often accompanies an increase in temp
Pallor
Decrease in color of skin. Often accompanies a decrease in skin temp and reflects a decrease in blood flow