Which retinal structure allows for perception of general shapes and shades of gray in dim light?
rods
What kind of anesthetic block is used for a vitrectomy procedure?
retrobulbar
Perfluoropropane and sulfur hexafluoride are used to:
keep pressure on the retina
Which of the following is a pharmacologic agent that constricts the pupil of the eye?
acetylcholine
A trephine is used in which ophthalmologic procedure?
keratoplasty
Which sterile irrigation fluid is used for ophthalmic procedures?
BSS
The normal condition of the lens of the eye is:
transparent and biconvex
What is another name for the traction sutures used to manipulate the globe of the eye?
bridle
Which of the following represents the replacement device for the cataract lens in the eye?
IOL
Where is the lacrimal gland located?
upper lid, outer angle of the orbit
Into which structures do the lacrimal ducts drain tears?
nasal cavity
Which procedure done on an eye with internal malfunction or loss of contents and no possible recovery of sight
provides better mobility and cosmetic result with a prosthetic eye?
evisceration
Which procedure surgically treats glaucoma?
iridectomy
What is the portion of the eye between the cornea and the iris in which aqueous fluid flows and nourishes tissues?
anterior chamber
What is another name for a cystic structure caused by an inflammatory response to material trapped in a meibomian
gland?
chalazion
Which of the following is an inward turning of the eyelid with resulting corneal irritation?
entropian
Which instrument is used to remove the cataract lens in preparation for intraocular lens placement?
phacoemulsification hand piece
Which of the following is the name of locking or nonlocking needle holders frequently used in ophthalmology?
Castroviejo
Which of the following scissors would NOT be used for ophthalmologic procedures?
Jorgenson
What passes through the canal of Schlemm?
aqueous humor
Misalignment or deviation from coordinated movement of the eyes is:
strabismus
If looking at the right eye of a patient and assigning clock positions of 12, 3, 6, and 9 o’clock to the rectus eye
muscles, which of the following would be CORRECT?
Which of the following is the term for “crossed eyes”?
estropia
Which structure of the eye is colored and its muscles constrict or relax to control the amount of light entering the
pupil?
iris
How many tunics comprise the structure of the globe of the eye?
three
Which two structures form the external tunic of the globe of the eye?
cornea and sclera
Which procedure involves adjusting sutures after the patient has recovered completely from anesthesia, but within 24
hours?
recession/resection
Which structure of the eye is the thin, transparent lining of the inner surface of the eyelid and covers the sclera?
conjunctiva
Which of the following is NOT used for visualization in ophthalmologic procedures?
colposcope
Which of the following names represents an eye speculum that resembles an uncoiled metal paper clip?
Barraquer
All of the following are methods of intraocular lens insertion EXCEPT:
fan-folded through small incision
How would a definitive diagnosis of detached retina be obtained if hemorrhage is present in the eye?
surgical vitrectomy
What is the name of the gelatin-like fluid that fills the posterior cavity of the eye?
vitreous humor
For which surgical procedure would an Fragmatome be used?
vitrectomy
Which substance is used following vitrectomy for long-term support of the retina with fewer restrictions on position?
silicone oil
What is the name of the membrane that contains and encloses the vitreous humor in the posterior cavity?
hyaloid
Where would a Veirs rod be placed to relieve or prevent obstruction?
canaliculus
What is the condition of the lens that is treated by cataract extraction?
opacified
In which of the following procedures would sutures most likely NOT be necessary?
extracapsular cataract extraction
What is the name of the opening created in the outer tunic for insertion of the infusion cannula for excision of
vitreous?
sclerotomy
What is the name of the structure that is a small depression containing only cones and has the highest visual acuity?
central fovea
Tetracaine drops are used in opthomologic procedures to:
numb the surface of the eye and surrounding structures
Which of the following techniques uses a laser to treat retinal tears or proliferative diabetic retinopathy?
endophotocoagulation
Which procedure may be done in conjunction with vitrectomy if the surgeon is unable to gain visualization of the
posterior cavity of the eye?
lensectomy
What is the term for the six muscles that provide movement of the eye?
extrinsic
Which of the following is an intraocular procedure?
vitrectomy
What structure is avascular, external, and its function is to refract light rays?
cornea
Which structure has four layers: epithelial cells, substantia propria, elastic lamina, and endothelial cells?
cornea
Which type of needle is frequently used in ophthalmologic procedures?
spatula
Cryotherapy uses which of the following to seal retinal tears and holes?
cold
Overhead OR spotlights should be placed on highest setting to provide necessary illumination during intraocular
procedures.
False
Donor corneas must be screened for HIV, HBV, and CJD prior to transplant.
True
The surgical technologist must develop the ability to transfer very small, delicate instruments into the surgeon’s hand
in a functional manner so that he or she does not have to look away from the microscope.
True
Cataracts are categorized as a general condition of aging rather than a disease process.
True
Gas injected into the posterior cavity of the eye following vitrectomy is more stable and requires fewer restrictions of
a patient with regard to positioning and altitude than silicone oil.
False
Type of drape with a rounded fenestration and adhesive backing; used when procedure involves the globe of the eye
Aperture
Type of drape sheet with “U” configuration and adhesive edged “legs”; used for procedures requiring broader access
to extraocular areas
Split
Thick connective tissue structure that provides integrity to the shape of the eyelid: may be repositioned in entropian
repair
Tarsal plate
Angular junction of the eyelids at either corner of the eye
Canthus
Porous, circumferential band of tiny canals through which the aqueous humor drains
Trabecular meshwork
Name of line of miniscalpel blades used in ophthalmology and ENT
Beaver
Visual defect in which one object is seen in duplicate; treated with adjustable suture technique of strabismus
correction
Diplopia
Variable-rate, reciprocating, and cutting-tip hand piece attached to suction
Vitrector
Unit of measurement of the optical power of a magnifying lens
Diopter
Hereditary, progressive, noninflammatory disease of the anterior surface of the eye; diagnostic indication for
keratoplasty