Contact Lens Trauma and Treatment Quiz

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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?

They suggest an older event from an inflammatory process Signup and view all the answers

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

They can cover up corneal irregularities and improve oxygen transmission Signup and view all the answers

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

To reduce inflammatory response and decrease itch 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?

To prevent eye burning due to incorrect lens handling 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?

To prevent inflammation and mucus discharge once steroids are discontinued Signup and view all the answers

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

A whitish circular peripheral corneal infiltrate less than 1.5mm in size Signup and view all the answers

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

By reducing GPC-related inflammation Signup and view all the answers

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

To prevent edema in the cornea Signup and view all the answers

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

To allow adequate oxygen transmission to the cornea 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?

It can lead to corneal neovascularization 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?

To provide extra cushioning for comfort Signup and view all the answers

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

Regular use of topical steroids Signup and view all the answers

What is a common treatment approach for corneal vascularization?

Applying lubrication Signup and view all the answers

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

To avoid further oxygen deprivation to the cornea Signup and view all the answers

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

If they show signs of vasuclariton Signup and view all the answers

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

The severity of the corneal invasion by vessels 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?

If the patient displays non-compliant behavior Signup and view all the answers

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

Refitting into daily wear disposable or gas permeable lenses Signup and view all the answers

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

Mucous discharge Signup and view all the answers

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

Delayed hypersensitivity reaction to protein & lipid mucous deposits on the lens surface Signup and view all the answers

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

Stringy, ropy discharge Signup and view all the answers

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

Enhanced cleaning regimen if using planned replacement lenses Signup and view all the answers

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

Accumulation of biofilm and debris under the lens Signup and view all the answers

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

Provide frequent lubrication 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?

To identify if the BC is too flat compared to the cornea Signup and view all the answers

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

Red eye due to corneal inflammation Signup and view all the answers

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

Scattered or focal epithelial staining Signup and view all the answers

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

Leads to lower lid response Signup and view all the answers

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

To prevent upper lid response Signup and view all the answers

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

Removes debris from the lens surface Signup and view all the answers

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

When replacement lenses are not available Signup and view all the answers

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

Removes protein build-up Signup and view all the answers

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

Removes the coating on the lens surface Signup and view all the answers