Contact Lens Fitting & Patient Care Flashcards
7 cards from real CPOT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Contact Lens Fitting & Patient Care flashcards as text
What is the correct method for cleaning contact lens storage cases?
Answer: Rinse with fresh multipurpose solution and air dry face down on a tissue
Contact lens cases must be rinsed with fresh multipurpose solution—never tap water—and air dried face down to eliminate moisture and prevent microbial contamination.
What is the generally recommended maximum wearing time per day for conventional daily wear soft contact lenses?
Answer: 12 to 16 hours
Most practitioners recommend limiting daily wear soft lens use to 12–16 hours to ensure the cornea receives adequate oxygen during lens-free periods, typically overnight.
Which set of symptoms should prompt a contact lens wearer to immediately remove lenses and seek urgent eye care?
Answer: Sudden eye pain, marked redness, and light sensitivity
Sudden eye pain, significant redness, and photophobia may indicate corneal infection or ulceration, which can threaten vision and requires immediate lens removal and urgent evaluation.
What is the primary risk of sleeping in contact lenses that are not approved for extended (overnight) wear?
Answer: Increased risk of microbial keratitis and corneal hypoxia
Sleeping in non-extended wear lenses severely reduces corneal oxygenation and creates a warm, moist environment that significantly increases the risk of microbial keratitis, a potentially blinding infection.
Which solution should NEVER be used to rinse contact lenses before insertion?
Answer: Tap water
Tap water contains Acanthamoeba and other microorganisms that can adhere to contact lenses and cause Acanthamoeba keratitis, a severe and difficult-to-treat corneal infection.
How long must a one-step hydrogen peroxide contact lens disinfection system fully neutralize before the lenses can be safely inserted?
Answer: At least 6 hours
One-step hydrogen peroxide systems require a minimum of 6 hours to convert the 3% H2O2 to harmless saline via the catalytic disk; inserting lenses before full neutralization causes severe corneal pain and injury.
When educating a patient about a monthly contact lens replacement schedule, which statement is correct?
Answer: Lenses should be replaced every 30 days from opening, regardless of how frequently they are worn
Monthly replacement schedules are calendar-based from the date a lens is first opened; lens materials degrade and deposits accumulate over time even when lenses are not worn.