Transcript Ch 11 Special Senses: The Eyes and Ears

Ch 11 Special
Senses: The
Eyes and Ears
Terms for Eyes
 Iris-
ir/i, ir/o, irid/o, irit/o- controls the
amount of light entering the eye
 Lens- phac/o- focuses rays of light on the
retina
 Retina- retin/o- converts light images into
electrical images and transmits them to
the brain
Terms for Ears
 Outer
ear- pinn/i- transmits sound waves
to the middle ear
 Middle ear- myring/o, tympan/otransmits sound waves to the inner ear
 Inner ear- labyrinth/o- receives sound
vibrations and transmits them to the brain
Medical Specialists
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Audiologist- specializes in the measurement
of hearing function and the rehabilitation of
persons with hearing impairments
Ophthalmologist- specializes in diagnosing
and treating diseases and disorders of the eye
Optometrist- holds a Doctor of Optometry
(OD) degree and specializes in measuring the
accuracy of vision to determine whether
correction lenses or eye glasses are needed
enables the
eyeball to hold its
spherical shape
2nd of 12
paired
cranial
nerves
part of
the CNS
color and light
sensitive and the
central point of
sharpest vision
Contains rods
and cones that
convert light
into energy
signals sent to
the brain by the
optic nerve
A space with fluid
Refracts light
Allows light to
enter the retina
Ch 11 Terms
 blephar/o
eyelid
 dacryocyst/o lacrimal sac (tear sac)
 irid/o iris, colored part of eye
 kerat/o cornea, hard
 ophthalm/o eye, vision
 optic/o, opt/o eye, vision
 ot/o ear, hearing
 presby/o old age
 pseud/o false
 retin/o retina, net
Words
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Blepharoptosis> drooping of the upper eyelid
Dacryocystsis> an inflammation of the lacrimal sac that
is associated with faulty tear drainage
Iridectomy> surgical removal of a portion of the iris tissue
Keratitis> inflammation of the cornea of the eye
Ophthalmologist> a specialist in diagnosing and treating
diseases and disorders of the eye
Optmetrist> a specialist in measuring the accuracy of
vision to determine if corrective lenses of eyeglasses are
needed
Otomycosis> a fungal infection of the external auditory
canal
Presbyopia> changes in the eye that occur with aging
Pseudophakia> an eye in which the natural lens is
surgically replaced with intraocular lens
Retinopexy> laser treatment to reattach a detached
retina