Enhancing Ocular Drug Absorption

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Questions and Answers

What is the recommended time to wait between instillation of drops when using more than one topical ocular medication?

  • 3 minutes
  • 5 minutes (correct)
  • 1 minute
  • 10 minutes

How can patients prevent the loss of the drug reservoir after instillation of drops?

  • By blinking rapidly
  • By rubbing their eyes
  • By applying digital pressure at the medial canthus (correct)
  • By looking upwards

What is the effect of blinking on a drug's effect after instillation of drops?

  • It diminishes the drug's effect (correct)
  • It enhances absorption through the nasal mucosa
  • It has no effect on the drug
  • It increases the drug's effect

What is the role of the nasolacrimal pump mechanism in ocular drug absorption?

<p>It forces fluid from the lacrimal sac into the nasopharynx, creating a negative sac pressure that empties the tear lake (B)</p> Signup and view all the answers

What is the purpose of applying digital pressure at the medial canthus after instillation of drops?

<p>To prevent emptying of the tear lake and reduce systemic toxicity by decreasing absorption through the nasal mucosa (B)</p> Signup and view all the answers

How does the second drop affect the first drop if instilled without a 5-minute interval?

<p>It may simply wash out the first drop (B)</p> Signup and view all the answers

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