Chapter 16: Special Senses- (The Eye)
Overview of eye
- organ of sight -provides 3 dimensional vision by pairing -Each eye is located in a bony orbit of the skull -Covered by the eyelid
A distance visual acuity test uses __________ feet as the specified distance.
A) 5 B) 10 C) 15 D) 20 D
Repair of a lacerated eyelid is termed
A) Blepharoplasty B) Blepharectomy C) Iridectomy D) Iridotomy A
Eye instillation introduces a(n) __________ into the eye.
A) Fluid B) antimicrobial agent C) corrective lens D) medicated solution D
Excision of a lacrimal sac is
A) Keratoplasty B) Dacryocystectomy C) Iridectomy D) Enucleation B
Which surgical procedure is commonly used to correct myopia?
A) Keratoplasty B) Keratomileusis C) phacoemulsification D) Cryoretinopexy B
The combining form for cornea is
A) Ocul/o B) Opt/o C) Scler/o D) Choroid/o E) Kerat/o E
Place where optic nerve fibers cross in the brain
A) Optic disc B) Optic chiasma C) Retina D) Olfactory lobe E) Cerebral cortex B
Small hard mass on the eyelid; formed from a sebaceous gland enlargement.
A) Scleral buckle B) Blepharochalasis C) Chalazion D) Cataract E) Steatoma C
The jellylike mass filling that gives bulk to the eye is
A) ciliary muscle B) vitreous C) choroid D) sclera B
The instrument most commonly used to visualize the interior of the eye is a/an
A) otoscope B) ophthalmoscope C) microscope D) tonometer B
The lay term for conjunctivitis is
A) sty B) pinkeye C) farsightedness D) nearsightedness B
cycl/o
ciliary body (circle)
cryoretinopexy is a surgical treatment using intense __________ to seal a hole or tear in the retina.
cold
-opia
condition of vision
opthalm/o
eye
vitre/o
glassy
Myopia
nearsightedness
dacry/o
tear
lacrim/o
tear
lacrimal apparatus
the structures that produce, store, and remove tears
Adjustment of the lens by the ciliary body
A) Accommodation B) Refraction C) Binocular vision D) Photophobia E) Amblyopia A
Impairment of vision due to old age
A) Emmetropia B) Diplopia C) Esotropia D) Presbyopia E) Anisocoria D
The use of intense cold to seal a hole or tear in the retina is performed in
A) Enucleation B) Blepharoplasty C) Cryopexy D) Retinoscopy C
A intraocular lens implant is common after which surgical procedure?
A) LASIK B) Keratoplasty C) Cryoretinopexy D) cataract extraction D
Macular degeneration produces
A) Loss of central vision B) Hemianopia C) Retinal detachment D) Nystagmus E) Cataracts A
An agent that causes the pupil to dilate is called a/an
A) Miotic B) Antibiotic C) Mydriatic D) Antihistamine C
An agent that causes the pupil to contract is called a/an
A) Miotic B) Mydriatic C) Antibiotic D) Antihistamine A
_________is a defective curvature of the lens or cornea that prevents light rays from coming to a single focus on the retina.
A) Myopia B) Hyperopia C) Presbyopia D) Astigmatism D
Myopia
A) Nearsightedness B) Farsightedness C) Astigmatism D) Strabismus E) Glaucoma A
A blind spot; area of depressed vision surrounded by an area of normal vision
A) Nyctalopia B) Exotropia C) Scotoma D) Esotropia E) Strabismus C
Yellowish region in the retina; contains the fovea centralis
A) Optic disc B) Posterior chamber C) Macula lutea D) Sclera E) Choroid C
The combining form for the ciliary body is
A) Phak/o B) Lacrim/o C) Irid/o D) Cycl/o E) Dacry/o D
Parts of the eye
Tunic Layer -Sclera: White of the eye -Cornea: transparent anterior coating
conjunctiv/o
conjunctiva (to join together)
Corne/o
cornea
kerat/o
cornea
Strabismus
crossed eyed
excision or removal of the eyeball is called
enucleation
ocul/o
eye
opt/o
eye
blephar/o
eyelid
Hyperopia
farsighted
colored portion of the eye; surrounds the pupil
iris
ir/o
iris
irid/o
iris (colored circle)
the medical term describing corneal transplant is
keratoplasty
phac/o
lens (lentil)
phak/o
lens (lentil)
phot/o
light
presby/o
old age
sensitivity to light
photophobia
the term for the condition of the eye after the natural lens has been replaced with an artificial lens is
pseudophakia
dark center of the eye through which light rays enter
pupil
contains sensitive cells (rods and cones) that transmit light energy to nervous impulses
retina
retin/o
retina
scler/o
sclera (hard)
aque/o
water
aqueous pertains to
water
Glaucoma is primarily diagnosed by
A) Tonometry B) Ophthalmoscopy C) Slit lamp biomicroscopy D) Fluorescein angiography E) Visual field exam A
An eye in which the natural lens is replaced with an intraocular lens is has
A) a cataract B) aphakia C) pseudophakia D) glaucoma C
Involuntary, rapid oscillating movement of the eyeball is called
A) blepharospasm B) exophthalmus C) nystagmus D) diplopia C
The ophthalmologic term describing a fibrous growth of conjunctival tissue that extends onto the cornea is termed
A) chalazion B) sty C) pterygium D) conjunctivitis C
Cataract is defined as
A) clouding of the lens of the eye B) a small, hard, inflamed cyst C) absence of the lens of the eye D) growth of tissue on the conjunctiva and cornea A
The palpebra is also known as the
A) cornea B) iris C) eyelid D) lens C
An outward turning of the rim of the eyelid is called
A) entropion B) esotropia C) exotropia D) ectropion D
Corneal ulcers can be treated with
A) eye irrigation B) Mydriatics C) antibiotic ophthalmic solutions D) Miotics C
Lacrimation refers to
A) eye strain B) secretion of tears C) sensitivity to light D) rapid movement of eyeball B
Which of the following procedures uses injection of a contrast material?
A) fluorescein angiography B) slit-lamp biomicroscopy C) Sonography D) Tonometry A
The medical term for a sty is
A) hordeolum B) pterygium C) chalazion D) blepharitis A
Blepharoptosis is usually caused by
A) inflammation B) blocked duct C) intraocular pressure D) paralysis D
The combining form meaning colored circle is
A) irid/o B) aque/o C) dacry/o D) phot/o A
The __________ bends and focuses light rays on the retina
A) iris B) pupil C) lens D) cornea C
The disease characterized by increased intraocular pressure is
A) keratitis B) retinopathy C) cataract D) glaucoma D
Which of the following secretes tears?
A) lacrimal gland B) glands of Zeis C) meibomian glands D) pupil A
A tonometer is used to
A) measure distance visual acuity B) photograph the retina C) examine the lens of the eye D) measure intraocular pressure D
The medical term for farsightedness is
A) myopia B) hyperopia C) astigmatism D) presbyopia B
A blind spot in vision is
A) nystagmus B) blepharospasm C) asthenopia D) scotoma D
Drooping of the eyelid usually caused by paralysis is termed
A) nystagmus B) presbyopia C) blepharoptosis D) blepharochalasis C
The physician who specializes in medical and surgical treatment of the eye is a/an
A) optometrist B) opthalmologist C) ophthalmologist D) audiologist C
Absence of a lens, usually after a cataract extraction, is called
A) pseudophakia B) aphakia C) enucleation D) keratomileusis B
Phac/o
A) pupil B) cornea C) lens D) glassy C
Aphakia describes the absence of the __________ of the eye.
A) sclera B) retina C) lens D) cornea C
Snellen Eye Chart
One of several charts used in testing visual acuity; letters, numbers, or symbols are arranged on the chart in decreasing size from top to bottom
Cataract
Light rays diffused by a cataract
right eye
OD
left eye
OS
both eyes
OU
