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50 Cards in this Set

  • Front
  • Back
Presbycusis

hearing loss from gradual deterioration of sensory receptors. Associated with aging.

Canthus


--Corner of the eye




--angle where upper and lower eyelids meet

OD


Right Eye - aka Occulus Dexter

OS

Left Eye - aka Occulus Sinister

OU

Both Eyes - aka Occulus Uterque

AD

Right Ear - Aka Auris Dexter
AS

Left Ear - Aka Auris Sinister

AU

Both Ears - aka Auris Unitas

Optic

Pertaining to eye or sight

Ocular

Pertaining to the eye

Extraocular

Outside the eyeball

Intraocular

Inside the eyeball

Layers of the Eyeball


--Sclera


--Choroid


--Retina

Sclera


Tough, fibrous tissue that forms the outer layer of the eye, except for the cornea.

Choroid

Opaque middle layer of eye that contains blood vessels and provides blood supply for the eye

Retina

Sensitive most innermost layer that receives nerve impulses and transmits them to the optic nerve.
Structures of the Retina

--Rods (BW) and Cones (color)


--Macula




--Fovea Centralis - highest concentration of rods/cones




Rods and Cones

--Rods - react to dim light and used in night vision




--Cones - sensitive to bright light and used to see color


Pigmented layer of the eye contains

--Cornea, Pupil and Lens


Cornea
Transparent outer surface of eye covering the Iris and pupil focusing light rays entering the eye

Pupil

Black circular opening in center of iris that permits light to enter the eye

Lens

Clear, Flexible curved structure that focuses images on the retina
Iritis

Inflammation of the uvea affecting primarily structures in front of the eye and can last 6-8 weeks

Keratitis

Inflammation of the cornea
Cataracts

Cloudy lens


Floaters
White floating lights in peripheral vision - debris inside the eye

Glaucoma


Increased intraocular pressure (excessive aqueous humor) that causes damage to the retinal nerve fibers and optic nerve.




--Chronic Glaucoma


--Acute Glaucoma


Refractive Disorders Types


Focusing problem that occurs when the lens and cornea do not bend light so that it focuses properly on the retina.




-Hyperopia


-Myopia


-Presbyopia (old age)

Hyperopia

Light rays focus BEYOND the retina resulting in FARSIGHTEDNESS
Myopia

Light rays focus in FRONT of the retina resulting in NEARSIGHTEDNESS
Presbyopia

old age sightedness


PERRLA

Acronym meaning PUPILS are EQUAL, ROUND, RESPONSIVE to LIGHT and ACCOMODATION
Iridectomy

Surgical removal of a portion of the tissue of the iris

Lensectomy

Surgical removal of cataract-clouded lens

Corrective Lens Types


-Concave Lenses-Curve inward for myopia


-Convex lenses-curve outward for hyperopia


-Bifocals- lenses with 2 powers


-Trifocals- lenses with 3 powers


-Contact Lenses-refractive lenses that float directly on the tear film in front of the eye

Middle Ear Structures

-Tympanic Membrane (eardrum)


-Mastoid Process


-Auditory Ossicles: Malleus(hammer), Incus (anvil), Stapes (Stirrup)


-Eustachian Tubes


Tympanic Membrane

Eardrum

Auditory Ossicles


3 Small bones in the middle ear that transmits sound waves from eardrum to inner ear by vibration. The bones are:




-Malleus (hammer)


-Incus (Anvil)


-Stapes (Stirrup)


Otitis

**Ear infection**



Inflammation of the ear


Tinnitus

Condition of ringing, buzzing or roaring sound in one or both ears
Conjunctiva

Transparent mucous membrane that lines the underside of eyelid and continues over eyeball
Lacrimal Apparatus

Structure that produce, store and remove tears

Macular Degeneration

**Leading cause of blindness in ages 55+




--Macula at center of retina is damaged, resulting in loss of CENTRAL vision, but not in total blindness.

Olfactory

Smelling
Gustatory

Tasting
MA should be sensitive to cultural considerations and needs of patient


--Speak CLEARLY and slowly to those who cannot hear well.




--Provide patients with instructions they will understand.




--Encourage patients to repeat any instruction to ensure they fully understand

Otosclerosis
Hereditary condition with abnormal tissue growth around stapes causing gradual hearing loss
Sense of touch

Originates from the DERMIS, the deepest layer of skin.
Astigmatism

Irregularity in curvature of the cornea and lens. Football shaped.
Where is the highest concentration of Rods and cones?

Fovea Centralis