Contact Lens Trauma and Treatment Quiz

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Questions and Answers

What does clear thin vessels in all clock positions suggest?

  • An active process with lack of oxygen
  • An acute corneal injury
  • A need for lubrication
  • An older event from an inflammatory event (correct)

When would fitting a patient into GP lenses be considered?

  • In case of corneal vascularization (correct)
  • To prevent further corneal damage
  • For an acute corneal injury
  • For an active corneal process

What is the purpose of discontinuing lenses for patients with vascular growth?

  • To switch to GP lenses immediately
  • To allow for better lubrication of the eye
  • To provide relief from corneal inflammation
  • To prevent worsening of the condition (correct)

What is the significance of ghost vessels in the context of corneal health?

<p>They suggest an older event from an inflammatory process (A)</p> Signup and view all the answers

What is the main advantage of GP lenses in relation to corneas with distortion and vessel growth?

<p>They can cover up corneal irregularities and improve oxygen transmission (D)</p> Signup and view all the answers

What is the primary purpose of giving patients with giant papillary conjunctivitis (GPC) a low dosage of steroid?

<p>To reduce inflammatory response and decrease itch (C)</p> Signup and view all the answers

Why is it important to inform patients about the correct timing of rubbing their contact lenses when using an alcohol-based cleaner?

<p>To prevent eye burning due to incorrect lens handling (A)</p> Signup and view all the answers

In the context of contact lens peripheral corneal ulcer (CLPU), what is the primary reason for introducing antihistamines after a week of steroid use?

<p>To prevent inflammation and mucus discharge once steroids are discontinued (D)</p> Signup and view all the answers

What is the characteristic feature of contact lens peripheral corneal ulcer (CLPU) as described in the provided text?

<p>A whitish circular peripheral corneal infiltrate less than 1.5mm in size (D)</p> Signup and view all the answers

How does alcohol-based cleaner usage contribute to reducing giant papillary conjunctivitis (GPC) in patients?

<p>By reducing GPC-related inflammation (A)</p> Signup and view all the answers

What is the main reason for giving a scleral lens with the highest dk value?

<p>To prevent edema in the cornea (A)</p> Signup and view all the answers

Why is the post-lens tear layer recommended to be half the thickness of the scleral lens?

<p>To allow adequate oxygen transmission to the cornea (D)</p> Signup and view all the answers

In the context of GP lenses, what is the significance of having fluid trapped in the anterior stromal layer?

<p>It can lead to corneal neovascularization (B)</p> Signup and view all the answers

Why is it important for the post-lens tear layer thickness to be as thick as the scleral lens in some cases?

<p>To provide extra cushioning for comfort (B)</p> Signup and view all the answers

Which action would be most effective in reducing the risk of corneal vascularization associated with wearing GP lenses?

<p>Regular use of topical steroids (C)</p> Signup and view all the answers

What is a common treatment approach for corneal vascularization?

<p>Applying lubrication (D)</p> Signup and view all the answers

Why might a patient refrain from wearing contact lenses after experiencing corneal vascularization?

<p>To avoid further oxygen deprivation to the cornea (C)</p> Signup and view all the answers

When should a patient consider using gas permeable (GP) lenses according to the text?

<p>If they show signs of vasuclariton (C)</p> Signup and view all the answers

What is a consideration when deciding whether to prescribe GP lenses to a patient with corneal vascularization?

<p>The severity of the corneal invasion by vessels (B)</p> Signup and view all the answers

In the context of corneal vascularization, what might prompt a healthcare provider to hesitate in giving contact lenses to a patient again?

<p>If the patient displays non-compliant behavior (D)</p> Signup and view all the answers

What is the recommended treatment for Contact Lens Acute Red Eye (CLARE)?

<p>Refitting into daily wear disposable or gas permeable lenses (A)</p> Signup and view all the answers

Which symptom is commonly associated with Contact Lens Giant Papillary Conjunctivitis (CLGPC)?

<p>Mucous discharge (D)</p> Signup and view all the answers

What is a proposed etiology for Contact Lens Giant Papillary Conjunctivitis (CLGPC)?

<p>Delayed hypersensitivity reaction to protein &amp; lipid mucous deposits on the lens surface (B)</p> Signup and view all the answers

What is a common sign of Contact Lens Giant Papillary Conjunctivitis (CLGPC)?

<p>Stringy, ropy discharge (B)</p> Signup and view all the answers

How should Contact Lens Giant Papillary Conjunctivitis (CLGPC) be treated?

<p>Enhanced cleaning regimen if using planned replacement lenses (B)</p> Signup and view all the answers

What is the most likely cause of CLARE (Contact Lens Related Red Eye)?

<p>Accumulation of biofilm and debris under the lens (C)</p> Signup and view all the answers

What treatment strategy is recommended for Arcuate Stain From Trapped Tears?

<p>Provide frequent lubrication (C)</p> Signup and view all the answers

Why is it important to reassess the base curve (BC) fitting of a contact lens that causes leakage of debris and epithelial cell debris?

<p>To identify if the BC is too flat compared to the cornea (C)</p> Signup and view all the answers

What is a possible consequence of wearing contact lenses for an extended period without proper tear exchange?

<p>Red eye due to corneal inflammation (B)</p> Signup and view all the answers

Which characteristic is associated with Arcuate Staining w SiHy Lens Wear?

<p>Scattered or focal epithelial staining (C)</p> Signup and view all the answers

What is the potential issue with lipid protein in reusable lenses?

<p>Leads to lower lid response (A)</p> Signup and view all the answers

What is the purpose of discontinuing lens wear in patients with high lipid protein in lenses?

<p>To prevent upper lid response (B)</p> Signup and view all the answers

What is the impact of alcohol in serene or muroflow on lenses?

<p>Removes debris from the lens surface (D)</p> Signup and view all the answers

In what case would a product allowing cleaning, like serene or muroflow, be recommended for lens users?

<p>When replacement lenses are not available (A)</p> Signup and view all the answers

What is the role of surfactant in serene or muroflow for soft and GP lenses?

<p>Removes protein build-up (C)</p> Signup and view all the answers

How does alcohol in serene or muroflow benefit patients who cannot replace lenses frequently?

<p>Removes the coating on the lens surface (B)</p> Signup and view all the answers

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