CLPU 103 Signs & Symptoms Quiz
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Questions and Answers

What is a common symptom of Acanthamoeba Keratitis related to the corneal nerve?

  • Dendrites without end bulbs along the radial nerves (correct)
  • End bulbs on the dendrites
  • Epithelial destruction
  • Complete ring infiltrate

    • How does the pain presentation in Acanthamoeba Keratitis differ from microbial infections?

  • The eye appears worse but feels less pain
  • The eye looks in pain but feels no discomfort
  • Pain is dramatic even when signs are moderate (correct)
  • There is no pain despite severe signs

    • Which is a unique sign of Acanthamoeba Keratitis that helps differentiate it from Herpes Simplex infection?

  • Pain beyond clinical signs (correct)
  • Iritis
  • Partial ring infiltrate
  • Presence of end bulbs on dendrites

    • How does a confocal microscope assist in diagnosing Acanthamoeba Keratitis?

    <p>By revealing epipunctate keratitis over the infiltrate</p> Signup and view all the answers

    What is a characteristic feature of nerve involvement in Acanthamoeba Keratitis?

    <p>Enlarged radial nerves with engorgement</p> Signup and view all the answers

    Why might a patient with Fungal Keratitis present with relatively mild to moderate pain?

    <p>Recent trauma by vegetative matter</p> Signup and view all the answers

    What is a key factor that differentiates Fungal Keratitis from Microbial Keratitis in terms of treatment response?

    <p>Progression of the ulcer despite antibiotic use</p> Signup and view all the answers

    What diagnostic method provides immediate identification of fungal infections like Fusarium in the context of the text?

    <p>Confocal Microscope</p> Signup and view all the answers

    What was a common feature observed in the 2006 Fusarium outbreak mentioned in the text?

    <p>Use of B&amp;L Renu Moisture Loc</p> Signup and view all the answers

    How do nerve fibers inflammation differ in Acanthamoeba Keratitis compared to Herpes Simplex Keratitis?

    <p>Presence of satellite lesions in Acanthamoeba but not in Herpes Simplex</p> Signup and view all the answers

    What is the resistant form of Acanthamoeba that can be detected using a Confocal Microscope?

    <p>Cyst</p> Signup and view all the answers

    Which symptom helps to differentiate Acanthamoeba Keratitis from Herpes Simplex Keratitis?

    <p>Circular infiltrate</p> Signup and view all the answers

    What is a method of diagnosing Acanthamoeba Keratitis that provides an immediate diagnosis?

    <p>Confocal Microscope</p> Signup and view all the answers

    What is the major difference in the appearance of infiltrates between Acanthamoeba Keratitis and Herpes Simplex Keratitis?

    <p>Radial infiltrate along corneal nerves in Acanthamoeba, linear infiltrate in Herpes Simplex</p> Signup and view all the answers

    Which factor helps in isolating the proper diagnosis of Acanthamoeba Keratitis based on the location of the ulcer?

    <p>Appearance of the border</p> Signup and view all the answers

    What is a common symptom of Acanthamoeba Keratitis?

    <p>No pain at all</p> Signup and view all the answers

    What distinguishes the border of a microbial ulcer from a fungal infection?

    <p>Distinct border</p> Signup and view all the answers

    In the context of Acanthamoeba Keratitis, what is the role of nerve fibers?

    <p>Nerve fibers show inflammation</p> Signup and view all the answers

    How does the depth of a fungal infection ulcer compare to that of a microbial ulcer?

    <p>Microbial ulcers are deeper</p> Signup and view all the answers

    What imaging technique can be helpful in diagnosing Acanthamoeba Keratitis?

    <p>Confocal microscopy</p> Signup and view all the answers

    What is the recommended action to prevent Fusarium in contact lens wearers?

    <p>Regular lens replacement every 3 months</p> Signup and view all the answers

    Which of the following is NOT a recommended treatment for Acanthamoeba Keratitis?

    <p>Amphotericin B every 30 minutes</p> Signup and view all the answers

    What is a common factor associated with fungal infection in Acanthamoeba Keratitis?

    <p>Trauma from plant matter</p> Signup and view all the answers

    Why is corneal debridement necessary in treating Acanthamoeba Keratitis?

    <p>To enhance penetration of antifungal medications</p> Signup and view all the answers

    What is the purpose of avoiding topping off solutions for contact lenses?

    <p>To reduce the amount of fungus on lens surfaces</p> Signup and view all the answers

    What is a common symptom of Acanthamoeba Keratitis?

    <p>Sectorial conjunctival redness</p> Signup and view all the answers

    How does Acanthamoeba Keratitis differ from Herpes Simplex Keratitis in terms of ulcer location?

    <p>Acanthamoeba Keratitis ulcers are deeper into the stroma compared to Herpes Simplex Keratitis</p> Signup and view all the answers

    What is a distinguishing characteristic of nerve fibers inflammation in Acanthamoeba Keratitis?

    <p>Moderate to severe pain</p> Signup and view all the answers

    How can Confocal Microscope be helpful in diagnosing Acanthamoeba Keratitis?

    <p>It can detect cysts and trophozoites of Acanthamoeba organisms</p> Signup and view all the answers

    Which characteristic differentiates Peripheral ulcer from Microbial ulcer?

    <p>The amount of epithelial tissue destroyed by bacteria</p> Signup and view all the answers

    What is the recommended tapering period for Acanthamoeba Keratitis treatment?

    <p>2-3 months</p> Signup and view all the answers

    Why should steroid use be avoided in Acanthamoeba Keratitis treatment?

    <p>To prevent further infection development</p> Signup and view all the answers

    What kind of pain can be experienced in Acanthamoeba Keratitis due to inflammation of corneal nerves?

    <p>Burning pain</p> Signup and view all the answers

    When should a patient with suspected Acanthamoeba Keratitis be referred to a Corneal Specialist at a medical center?

    <p>After 1-2 weeks unresponsiveness to topical meds</p> Signup and view all the answers

    What imaging technique is commonly used in the diagnosis of Acanthamoeba Keratitis?

    <p>Confocal microscopy</p> Signup and view all the answers

    What distinguishes Acanthamoeba Keratitis from Herpes Simplex Keratitis in terms of corneal infiltrate shape?

    <p>Radial infiltrate in Acanthamoeba, circular in Herpes Simplex</p> Signup and view all the answers

    Which factor significantly elevates the risk of developing Acanthamoeba Keratitis?

    <p>Significant elevation of risk factors with abuse or extended wear soft contact lenses</p> Signup and view all the answers

    How long can it take for a patient to recover from Acanthamoeba Keratitis?

    <p>~6 months</p> Signup and view all the answers

    What intervention might be necessary if there is hazing and scarring of the cornea in Acanthamoeba Keratitis?

    <p>Corneal transplant may be needed</p> Signup and view all the answers

    What kind of nerve infiltration can occur in Acanthamoeba Keratitis due to inflammation?

    <p>Radial nerve infiltration</p> Signup and view all the answers

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