Eye surgery practice questions
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Questions and Answers

Which artery is the main blood supply to the eye?

  • Ophthalmic artery (correct)
  • Posterior ciliary arteries
  • Internal carotid artery
  • Central retinal artery

What determines the intraocular pressure (IOP)?

  • Choroidal blood volume
  • Aqueous fluid volume
  • Extraocular muscle tone
  • All of the above (correct)

Which cranial nerve is not a true cranial nerve but an outgrowth of the brain?

  • Optic nerve (correct)
  • Facial nerve
  • Trigeminal nerve
  • Olfactory nerve

Which nerve provides motor function to the intrinsic muscles of the larynx and the heart?

<p>Vagus nerve (A)</p> Signup and view all the answers

What is the most frequently performed intraocular surgical procedure?

<p>Cataract surgery (A)</p> Signup and view all the answers

Which nerve is the efferent pathway for the oculocardiac reflex?

<p>Vagus nerve (B)</p> Signup and view all the answers

What is the preferred anesthesia method for eye surgery?

<p>Ocular regional anesthesia (A)</p> Signup and view all the answers

Which of the following is the most important determinant of intraocular pressure (IOP)?

<p>Balance between production and elimination of aqueous humor (C)</p> Signup and view all the answers

Which drug reduces aqueous humor production?

<p>Acetazolamide (B)</p> Signup and view all the answers

What is the most common injury occurring after general anesthesia?

<p>Corneal abrasion (A)</p> Signup and view all the answers

Which surgical technique has increased the popularity of topical anesthesia for ophthalmic procedures?

<p>Cataract surgery (B)</p> Signup and view all the answers

Which of the following is true about the evaluation of an ophthalmic block?

<p>Residual movement should be assessed to determine if additional anesthesia is required (D)</p> Signup and view all the answers

Which anesthesia is recommended for ophthalmic procedures in adults, especially the elderly?

<p>Regional anesthesia (B)</p> Signup and view all the answers

What should be considered to decrease back strain during ophthalmic procedures?

<p>Pillows under knees (A)</p> Signup and view all the answers

What should be done to decrease the incidence of postoperative nausea during general anesthesia for ophthalmic procedures?

<p>Use a multimodal approach (B)</p> Signup and view all the answers

Which cranial nerve provides motor function to the intrinsic muscles of the larynx and the heart?

<p>Cranial nerve X (D)</p> Signup and view all the answers

What determines the intraocular pressure (IOP)?

<p>All of the above (D)</p> Signup and view all the answers

Which artery is the main blood supply to the eye?

<p>Ophthalmic artery (A)</p> Signup and view all the answers

Which nerve provides motor function to the intrinsic muscles of the larynx and the heart?

<p>Vagus nerve (D)</p> Signup and view all the answers

What is the most frequently performed intraocular surgical procedure?

<p>Cataract surgery (A)</p> Signup and view all the answers

What is the preferred anesthesia method for eye surgery?

<p>Local anesthesia (D)</p> Signup and view all the answers

What is the ocular regional needle block commonly used for?

<p>Providing analgesia and akinesia of the eye and eyelids (D)</p> Signup and view all the answers

Which of the following is true about the evaluation of an ophthalmic block?

<p>Residual movement indicates the effectiveness of the block (B)</p> Signup and view all the answers

Which of the following is recommended for induction of general anesthesia for ophthalmic procedures?

<p>Inhalation induction (A)</p> Signup and view all the answers

What is the potential risk associated with general anesthesia for ophthalmic procedures?

<p>Malignant hyperthermia (B)</p> Signup and view all the answers

What should be done to decrease back strain during ophthalmic procedures?

<p>Use pillows under the knees (A)</p> Signup and view all the answers

Which of the following drugs can reduce intraocular pressure (IOP) by facilitating aqueous humor drainage?

<p>Echothiophate (B)</p> Signup and view all the answers

What is the most common injury occurring after general anesthesia for eye surgery?

<p>Corneal abrasion (B)</p> Signup and view all the answers

What is the main purpose of strabismus surgery?

<p>To correct misalignment of extraocular muscles (C)</p> Signup and view all the answers

Which gas can expand an ocular gas bubble placed during retinal reattachment surgery and potentially cause permanent blindness?

<p>Nitrous oxide (N2O) (B)</p> Signup and view all the answers

Which nerve is responsible for the afferent pathway of the oculocardiac reflex?

<p>Trigeminal nerve (A)</p> Signup and view all the answers

What is the efferent pathway for the oculocardiac reflex?

<p>Vagus nerve (C)</p> Signup and view all the answers

Which of the following is a possible cardiac dysrhythmia caused by the oculocardiac reflex?

<p>Atrioventricular block (B)</p> Signup and view all the answers

Which of the following is an example of a stimulus that can trigger the oculocardiac reflex?

<p>Pressure on the globe (C)</p> Signup and view all the answers

Which nerve is part of the afferent pathway for the oculocardiac reflex?

<p>Trigeminal nerve (B)</p> Signup and view all the answers

What is the most common cardiac dysrhythmia caused by the oculocardiac reflex?

<p>Sinus bradycardia (B)</p> Signup and view all the answers

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