Which of the following retinal structures allows for perception of general shapes and shades of gray in dim light? a. cones b. fovea c. rods d. macula

Which of the following kinds of anesthetic blocks is used for a vitrectomy procedure? a. Bier b. spinal c. caudal d. retrobulbar

Perfluoropropane and sulfur hexafluoride are used to: a. anesthetize the eye. b. constrict the pupil. c. keep pressure on the retina. d. prevent post-op infections.

Which of the following choices is a pharmacologic agent that constricts the pupil of the eye? a. acetylcholine b. atropine c. betamethasone d. viscoelastic

A trephine is used in which of the following ophthalmologic procedures? a. dacryocystorhinostomy b. enucleation c. keratoplasty d. strabismus correction

Which of the following sterile irrigation fluids is used for ophthalmic procedures? a. BSS b. D5W c. H2O d. NACL

The normal condition of the lens of the eye is: a. opaque and biconcave. b. opaque and biconvex. c. transparent and biconcave. d. transparent and biconvex.

Another name for the traction sutures used to manipulate the globe of the eye is: a. bridle. b. buckle. c. retention. d. tunic.

Which of the following acronyms represents the replacement device for the cataract lens in the eye? a. IOC b. IOL c. IOP d. IUD

The lacrimal gland is located in the: a. lower lid and inner angle of the orbit. b. lower lid and outer angle of the orbit. c. upper lid and inner angle of the orbit. d. upper lid and outer angle of the orbit.

Into which of the following structures do the lacrimal ducts drain tears? a. ethmoid sinuses b. maxillary sinuses c. nasal cavity d. oropharynx

Which of the following procedures 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? a. iridectomy b. enucleation c. evisceration d. recession

Which of the following procedures surgically treats glaucoma? a. enucleation b. iridectomy c. keratoplasty d. scleral buckle

Another name for a cystic structure caused by an inflammatory response to material trapped in a meibomian gland is: a. cataract. b. chalazion. c. ectropian. d. entropian.

Which of the following conditions is an inward turning of the eyelid with resulting corneal irritation? a. cataract b. chalazion c. ectropian d. entropian

Which of the following instruments is used to remove the cataract lens in preparation for intraocular lens placement? a. CUSA b. trephine c. ocutome d. phacoemulsification hand piece

which of the following names refers to locking or nonlocking needle holders frequently used in ophthalmology? a. Bishop-Harmon b. Castroviejo c. Colibri d. Desmarres

Which of the following instruments is used to incise the sclera or cornea? a. Keratomes b. McPherson-Vannas c. Stevens tenotomy d. Graefe

Which of the following choices passes through the canal of Schlemm? a. aqueous humor b. vitreous humor c. lacrimal fluid d. optic nerve

Misalignment or deviation from coordinated movement of the eyes is: a. astigmatism. b. macular degeneration. c. retinal detachment. d. 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 choices would be CORRECT? a. 12=superior; 3=medial; 6=inferior; 9=lateral b. 12=superior; 3=lateral; 6=inferior; 9=medial c. 12=inferior; 3=medial; 6=lateral; 9=superior d. 12=inferior; 3=lateral; 6=medial; 9=superior

Which of the following terms is used for crossed eyes? a. amblyopia b. estropia c. myopia d. presbyopia

Which of the following structures of the eye is colored and its muscles constrict or relax to control the amount of light entering the pupil? a. fovea b. iris c. lens d. macula

How many tunics comprise the structure of the globe of the eye? a. one b. two c. three d. four

Which of the following two structures form the external tunic of the globe of the eye? a. pupil and iris b. cornea and sclera c. macula and retina d. ciliary body and choroid coat

Which of the following procedures involves adjusting sutures after the patient has recovered completely from anesthesia but within twenty-four hours? a. chalazion repair b. dacryocystorhinostomy c. entropian repair d. recession/resection

Which of the following structures of the eye is the thin, transparent lining of the inner surface of the eyelid and covers the sclera? a. conjunctiva b. cornea c. lens d. limbus

Which of the following instruments is NOT used for visualization in ophthalmologic procedures? a. colposcope b. loupes c. microscope d. ophthalmoscope

Which of the following eye speculums is composed of a solid wire with fixed blades and resembles an uncoiled paper clip? a. Barraquer b. Castroviejo c. Desmarres d. McPherson

Which of the following lenses is rarely used and requires a larger incision for insertion? a. hard plastic b. silicone c. acrylic d. phakic

If hemorrhage is present in the eye, a definitive diagnosis of detached retina would be obtained through: a. angiography. b. CT scan. c. direct view with ophthalmoscope. d. surgical vitrectomy.

The gelatin-like fluid that fills the posterior cavity of the eye is called: a. aqueous humor. b. crystalline lens. c. lacrimal fluid. d. vitreous humor.

For which of the following surgical procedures would an Fragmatome be used? a. vitrectomy b. enucleation c. keratoplasty d. strabismus correction

Which of the following substances is used following vitrectomy for long-term support of the retina with fewer restrictions on position? a. BSS b. silicone oil c. hydroxyapatite d. perfluoropropane

The membrane that contains and encloses the vitreous humor in the posterior cavity is called the: a. ciliary body. b. conjunctiva. c. hyaloid. d. sclera.

In which of the following areas would a Veirs rod be placed to relieve or prevent obstruction? a. canaliculus b. choroid body c. conjunctiva d. crystalline lens

Which of the following terms describes the condition of the lens that is treated by cataract extraction? a. abraded b. detached c. lacerated d. opacified

In which of the following procedures would sutures most likely NOT be necessary? a. extracapsular cataract extraction b. intracapsular cataract extraction c. recession/resection strabismus correction d. vitrectomy with scleral buckle

Which of the following procedures creates an opening in the outer tunic for insertion of the infusion cannula for excision of vitreous? a. dacryocystorhinostomy b. iridotomy c. sclerotomy d. vitrectomy

The structure that is a small depression containing only cones and has the highest visual acuity is the: a. ciliary body. b. central fovea. c. choroid coat. d. crystalline lens.

Tetracaine drops are used in ophthalmologic procedures to: a. fill the posterior cavity to prevent retinal detachment. b. numb the surface of the eye and surrounding structures. c. irrigate the cornea to prevent drying and abrasions. d. flush traumatic laceration tissue to prevent post-op SSI.

Which of the following techniques uses a laser to treat retinal tears or proliferative diabetic retinopathy? a. endophotocoagulation b. keratoplasty c. phacoemulsification d. trephination

Which of the following procedures may be done in conjunction with vitrectomy if the surgeon is unable to gain visualization of the posterior cavity of the eye? a. enucleation b. iridectomy c. keratoplasty d. lensectomy

The term that is used to describe the six muscles that provide movement of the eye is: a. accessory. b. extrinsic. c. intrinsic. d. involuntary.

Which of the following procedures is an intraocular procedure? a. chalazion repair b. entropian repair c. strabismus correction d. vitrectomy

Which of the following structures is avascular, external, and functions to refract light rays? a. iris b. sclera c. retina d. cornea

Which of the following type of needles is frequently used in ophthalmologic procedures? a. 1/2 circle blunt b. 5/8 circle taper c. straight Keith d. spatulated

Cryotherapy uses ______ to seal retinal tears and holes. a. cold b. heat c. monopolar current d. ultrasonic energy

Overhead OR lights should be placed on highest setting to provide necessary illumination during intraocular procedures. True/False

false

Donor corneas must be screened for HIV, HBV, and CJD prior to transplant. True/false

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 they do not have to look away from the microscope. True/false

true

Cataracts are categorized as a general condition of aging rather than a disease process True/false

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. True/false

false

Matching 1. Porous circumferential band of tiny canals through which the aqueous humor drains 2. Ultrasonic hand piece attached to irrigation and suction 3. The number of muscles attached to the exterior of the eyeball that allow it to move in many directions. 4. The portion of the eye between the cornea and Iris, in which aqueous humor flows and nourishes tissues. A. Six B. Phaco handpiece C. Trabecular meshwork D. Anterior chamber

CBAD

Which procedure surgically treats glaucoma A. Iridectomy or iridotomy B. Enucleation C. Keratoplasty D. Scleral buckle