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Questions and Answers
What is the primary effect of local anesthetics on nerve impulses?
What is the primary effect of local anesthetics on nerve impulses?
- They increase the conduction of nerve impulses along nerve fibres
- They amplify the strength of nerve impulses along nerve fibres
- They change the direction of nerve impulses along nerve fibres
- They block the conduction of nerve impulses along nerve fibres (correct)
Which of the following is NOT a property of an ideal topical anesthetic?
Which of the following is NOT a property of an ideal topical anesthetic?
- Effective for a reasonable duration
- Non-toxic
- Quick in onset
- Interacts with other drugs (correct)
What is the primary advantage of using anesthetics in ophthalmology and optometric procedures?
What is the primary advantage of using anesthetics in ophthalmology and optometric procedures?
- They reduce the risk of hypersensitivity reactions
- They increase the accuracy of tonometry
- They allow for more efficient procedures (correct)
- They reduce the cost of the procedure
What is a potential disadvantage of using anesthetics in ophthalmology procedures?
What is a potential disadvantage of using anesthetics in ophthalmology procedures?
Which of the following is an indication for the use of anesthetics?
Which of the following is an indication for the use of anesthetics?
What is the order of blockade of nerve fibres by local anesthetics?
What is the order of blockade of nerve fibres by local anesthetics?
What is the classification of cocaine in terms of anesthetic type?
What is the classification of cocaine in terms of anesthetic type?
What is the probable cause of delayed healing in cases of trauma to corneal epithelium in patients using mydriatics?
What is the probable cause of delayed healing in cases of trauma to corneal epithelium in patients using mydriatics?
What is a major disadvantage of using cocaine as an anesthetic?
What is a major disadvantage of using cocaine as an anesthetic?
What is the result of the influx of sodium ions in nerve transmission?
What is the result of the influx of sodium ions in nerve transmission?
What is a characteristic of amide-type anesthetics?
What is a characteristic of amide-type anesthetics?
What is the purpose of using proxymetacaine hydrochloride in optometry?
What is the purpose of using proxymetacaine hydrochloride in optometry?
Which type of nerve fibers are more sensitive to blockade by local anaesthetics?
Which type of nerve fibers are more sensitive to blockade by local anaesthetics?
What is the legal status of cocaine for optometrists in practice?
What is the legal status of cocaine for optometrists in practice?
What is the significance of protein binding in local anesthetics?
What is the significance of protein binding in local anesthetics?
What is the primary difference between ester- and amide-type anesthetics?
What is the primary difference between ester- and amide-type anesthetics?
What is the mechanism by which local anaesthetics cause a return to resting potential?
What is the mechanism by which local anaesthetics cause a return to resting potential?
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