Questions and Answers
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?
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A trephine is used in which ophthalmologic procedure?
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Which sterile irrigation fluid is used for ophthalmic procedures?
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The normal condition of the lens of the eye is:
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What is another name for the traction sutures used to manipulate the globe of the eye?
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Which of the following represents the replacement device for cataract lens in the eye?
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Where is the lacrimal gland located?
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Into which structures do the lacrimal ducts drain tears?
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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?
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Which procedure surgically treats glaucoma?
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What is the portion of the eye between the cornea and the iris in which aqueous fluid flows and nourishes the tissues?
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What is another name for a cystic structure caused by inflammatory response to material trapped in a meibomian gland?
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Which of the following is an inward turning of the eyelid with resulting corneal irritation?
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Which instrument is used to remove the cataract lens in preparation for intraocular lens placement?
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Which of the following is the name of locking or non-locking needle holders frequently used in ophthalmology?
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Which of the following scissors would NOT be used for ophthalmologic procedures?
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What passes through the canal of Schlemm?
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Misalignment or deviation from coordinated movement of the eyes is:
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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 could be CORRECT?
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Which of the following is the term for 'crossed eyes'?
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Which structure of the eye is colored and its muscles constrict or relax to control the amount of light entering the pupil?
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How many tunics comprise the structure of the globe of the eye?
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Which two structures form the outer tunic of the globe of the eye?
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Which procedure involves adjusting structures after the patient has recovered completely from anesthesia but within 24 hours?
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Which structure of the eye is the thin, transparent lining of the inner surface of the eyelid and covers the sclera?
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Which of the following is NOT used for visualization in ophthalmologic procedures?
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Which of the following names represents an eye speculum that resembles an uncoiled metal paper clip?
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All of the following are methods of intraocular lens insertion EXCEPT:
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How would a definitive diagnosis of detached retina be obtained if hemorrhage is present in the eye?
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What is the name of the gelatin-like fluid that fills the posterior cavity of the eye?
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For which surgical procedure would an ocutome (fragmatome) be used?
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Which substance is used following vitrectomy for long-term support of the retina with fewer restrictions on position?
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What is the name of the membrane that contains and encloses the vitreous humor in the posterior cavity?
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Where would a Viers rod be placed to relieve or prevent obstruction?
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What is the condition of the lens that is treated by cataract extraction?
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In which of the following procedures would sutures most likely NOT be necessary?
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What is the name of the opening created in the outer tunic for insertion of the infusion cannula for excision of vitreous?
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What is the name of the structure that is a small depression containing only cones and has the highest visual acuity?
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Tetracaine drops are used in ophthalmologic procedures to:
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Which of the following techniques uses a laser to treat retinal tears or proliferative diabetic retinopathy?
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Which procedure may be done in conjunction with vitrectomy if the surgeon is unable to gain visualization of the posterior cavity of the eye?
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What is the term for the six muscles that provide movement of the eye?
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Which of the following is an intraocular procedure?
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What structure is avascular, external, and its function is to refract light rays?
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Which structure has four layers: epithelial cells, substantia propria, elastic lamina, and endothelial cells?
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Which type of needle is frequently used in ophthalmologic procedures?
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Cryotherapy uses which of the following to seal retinal tears and holes?
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Study Notes
Retinal Structures and Vision
- Rods allow for perception of general shapes and shades of gray in dim light.
- The normal lens of the eye should be transparent and biconvex.
- The central fovea contains only cones and has the highest visual acuity.
Anesthesia and Procedures
- A retrobulbar block is commonly used during vitrectomy procedures.
- Iridectomy is a surgical treatment for glaucoma.
- Evisceration is performed on eyes with internal dysfunction, providing better cosmetic results for prosthetic eye placement.
Surgical Instruments and Techniques
- A trephine is utilized in keratoplasty, whereas a phacoemulsification handpiece removes the cataract lens.
- Castroviejo needle holders are frequently employed in ophthalmology.
- The ocutome (fragmatome) is used during vitrectomy to remove vitreous material.
Eye Structures and Functions
- The anterior chamber of the eye is where aqueous fluid flows, nourishing the eye tissues.
- Chalazion refers to a cystic structure from inflammatory responses in meibomian glands.
- The lacrimal gland is located at the upper lid, outer angle of the orbit, and tears drain into the nasal cavity via lacrimal ducts.
Pharmaceutical Agents and Irrigation Fluids
- Acetylcholine is a pharmacologic agent that constricts the pupil.
- Balanced Salt Solution (BSS) is the standard sterile irrigation fluid used in ophthalmic procedures.
- Tetracaine drops numb the surface of the eye and surrounding tissues during procedures.
Conditions and Diagnoses
- Strabismus indicates misalignment or deviation of eye movement.
- Esotropia is the term for "crossed eyes."
- Detached retina confirmation with hemorrhage present requires surgical vitrectomy.
Miscellaneous Terms and Concepts
- Vitreous humor fills the posterior cavity of the eye and is enclosed by the hyaloid membrane.
- The canal of Schlemm allows aqueous humor to pass through.
- The cornea serves as an avascular structure that refracts light rays.
Surgical Procedures and Types
- Extracapsular cataract extraction may not require sutures post-operation.
- Lensectomy may be done alongside vitrectomy if posterior cavity visualization is inadequate.
- Silicone oil provides long-term retinal support post-vitrectomy with fewer positional restrictions.
Summary of Eye Anatomy and Procedures
- The globe of the eye has three tunics: the outer (cornea and sclera), middle, and inner.
- Six extrinsic muscles facilitate eye movement, crucial for coordinated vision.
- The Barraquer eye speculum resembles an uncoiled metal paper clip and is used to keep the eyelids open during surgery.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on ophthalmic surgery with this flashcard quiz from Surgical Technology Chapter 16. Explore key terms such as retinal structures and anesthetic techniques crucial for vitrectomy procedures. Perfect for students looking to reinforce their learning in this specialized field.
