Gas Permeable Contact Lenses – Lens Fitting, Care, and Patient Education Practice Test

These questions are part of the practice quiz. Start practicing

• Most GP solutions contain derivatives of which two polymers?
• Steep GP Lens Correction: If we see a steep GP lens, what change should be made to the sagittal height of the lens?
• True or False: All standalone cleaners are abrasive.
• What preservative is located in Boston Advanced Comfort Formula Conditioning Solution?
• What would be the predicted contact lens power for a patient with Refraction: -2.00 -1.00 x 180, Ks: 43.50/44.50@090, BCR: 43.00?
• Long-term lens storage should be wet or dry?
• What type of GP lenses are more prone to warpage?
• For a patient with Refraction: -2.00 -1.00 x 180, Ks: 43.50/44.50 @090, BCR: 43.50, what is the expected tear layer?
• Which statement about SCL solutions and GP lenses is true?
• What technique is important to use with non-abrasive cleaners to remove deposits?
• Which statement best summarizes tear lens behavior in GP lens fitting?
• What would be the residual astigmatism from the predicted contact lens power for a patient with Refraction: -2.00 -1.00 x 180, Ks: 43.50/44.50@090, BCR: 43.00?
• Rewetting drops in GP lens care are used for what purpose?
• Which cleaner type is more effective at removing deposits?
• What would be the predicted contact lens power for a patient with Refraction: -2.00 -1.00 x 180, Ks: 43.50/44.50@090, BCR: 43.50?
• How long can GP lenses be stored wet?
• When is enzyme and protein remover recommended?
• Most people tend to over minus GP lenses.
• Which method is most likely to cause a ptosis?
• Which option represents a cleaner that combines surfactants with soaking solution?
• Which product is a dedicated protein remover?
• What are the benefits of using re-wetting drops with GP lenses?
• When should the DMV (or suction cup) method be used with GPs?
• Which of the following is a type of laboratory cleaners and solvents?
• In an ideal GP lens fit, how is edge clearance typically described?
• What are the goals of a lens care system using GP lenses?
• Non-abrasive surfactants/cleaners are typically used in combos.
• How should we educate a patient on adaptation with GP lenses?
• How should we educate our patient on how to wear their extended wear GP lenses?
• Which items should be included in the follow-up schedule for a new GP wearer?
• Which factor increases the risk of infections with GP lenses?
• What is the horizontal visible iris diameter (HVID) for the patient in the example?
• Which GP product is not intended for ocular use?
• Compliance: _____% of GP patients had perfect compliance.
• How should the left lens be cared for relative to the right lens?
• Which statement best describes the three common GP lens removal education methods?
• How often is Boston One-Step Enzymatic Cleaner added?
• What are the two types of B+L cleaners?
• Which statement about adjusting sagittal height for a steep GP lens is correct?
• Compliance, True or False: Compliance is still an issue for GP lens wearers.
• What adaptation schedule can we formulate for a new GP lens wearer?
• In fitting GP using an empirical method, how is over-refraction approached?
• Which statement is true about enzymatic cleaners safety in the eye?
• True or False: SCL solutions can be used with GPs, but GP solutions should not be used with SCLs.
• What percent of GP care solutions were contaminated?
• Which of the following is NOT a reason for discrepancy between empirical and diagnostic fits?
• Compliance: _____% of GP patients actually have good compliance.
• How should we educate our patient on how to wear their daily wear GP lenses?
• What would be the residual astigmatism from the predicted contact lens power for a patient with Refraction: -2.00 -1.00 x 180, Ks: 43.50/44.50@090, BCR: 43.50?
• How should we educate our patient on how to wear their flexible wear GP lenses?
• After applying Progent protein remover, what must you do?
• What can occur if excessive pressure is used to clean GP lenses with cleaners?
• What preservative is used in Boston Simplus?
• Which component should be performed immediately upon GP lens removal?
• Which feature is associated with a steep GP lens fit?
• In this context, what is the maximum residual astigmatism that would still allow wearing a spherical GP lens?
• When predicting the required GP lens power, tear layer power should be included.
• What preservative is used in Unique pH?
• Out of the three ways we can educate a GP lens patient to remove their contact lenses, which one is most preferred?
• For a flat GP lens, how should sagittal height be adjusted?
• GP lenses do not absorb water like soft lenses. What consequence does this have for contamination and preservative sensitivity?
• When would a patient be more likely to use an oxidative system with GP lenses?
• What is the proper technique to apply GP lens cleaners?
• Which of the following is a reason why a lens power produced via an empirical fit vs a diagnostic fit would not be the same?
• Which of the following is a reason why a lens power produced via an empirical fit vs a diagnostic fit would not be the same?
• What issue can arise with lens removal, cleaning, and storage?
• Which statement about preservatives in GP lens care solutions is true?
• Which activity is discouraged with GP lenses due to infection risk?
• What disinfection and care system allows for overnight soaking of GP lenses to achieve disinfection?
• Which sequence best describes the GP lens care cycle?
• True or False: Enzyme and protein remover recommended should be rinsed before application.
• Which statement best describes an ideal GP lens fit?
• When a flat GP lens is judged to be too flat, how should the outer optic diameter (OAD) be adjusted?
• During a diagnostic GP lens over-refraction, how should you perform it?
• Which practice is NOT recommended when using GP lens solutions?
• Which statement best describes the Boston One-Step Enzymatic Cleaner?
• When you observe a steep GP lens on the eye, which change to the optic zone diameter (OZD) is recommended?
• True or False: Enzymatic cleaners are listed as a type of GP lens cleaner.
• GP lenses don’t absorb water like soft lenses. What is the impact on contamination and preservative sensitivity?
• True or False: It is safe to dispense lenses that are too flat or too steep.
• Which item is included in the GP lens disinfection and care system?
• Which of the following is a reason why a lens power produced via an empirical fit vs a diagnostic fit would not be the same?
• Which cleaning outcome is associated with circular cleaning of GP lenses and should be avoided to prevent warpage?
• For a flat GP lens, how should the optic zone diameter (OZD) be adjusted?
• Which product is described as an extra-strength clearer used for in-office cleaning?
• What preservative is used in Clean?
• What preservative is located in Original Boston Formula Conditioning Solution?
• What would be the tear layer for a patient with Refraction: -2.00 -1.00 x 180, Ks: 43.50/44.50@090, BCR: 43.00?
• What is the benefit of using laboratory cleaners and solvents?
• Which of the following describes the challenges of a GP lens care system?
• Why are re-wetting drops used for GP lenses?
• If you have a 0.50D steeper than K lens, what is the expected tear lens?
• What is the role of the periodic cleaner in GP lens care?
• How should we appropriately remove cleaner from GP lenses?
• Which product name is the enzymatic cleaner mentioned in the care system?
• Before starting A+R training for a new GP lens wearer, how should we educate them?
• Which product is an example of a re-wetting drop?
• Which statement best describes a 2-in-1 system?
• Which of the following is a reason why a lens power produced via an empirical fit vs a diagnostic fit would not be the same?
• How often are enzyme and protein removers recommended to be used?
• Which statement about combination agents for GP lenses is correct?
• With a steep fitting lens, a plus/minus tear lens is created and we need to add plus/minus to compensate.
• In a properly fitted GP lens, how is the lid relationship described?
• What are the benefits of using a disinfectant system?
• Which items comprise the disinfection and care system for GP lenses?
• For a patient with the given data, what diameter should be chosen?
• Can GP enzymatic/laboratory cleaners go in the eye?
• What is the axis of the manifest refraction in the example?
• Which statement is part of recommended wearing and replacement guidance for GP lenses?
• Which GP product can be safely used in the eye?
• What would be the predicted contact lens power for a patient with Refraction: -2.00 -1.00 x 180, Ks: 43.50/44.50@090, BCR 43.00?
• Which of the following is an example of a 2-in-1 system containing a cleaner and disinfectant?
• Which practice helps maintain sterility when handling GP lens solutions?
• Which practice best aligns with predicting GP lens power when tear layer considerations are used?
• What is the residual astigmatism for this patient?
• If an alcohol-based enzyme and protein remover is used, they should not be used for more than ______ seconds.
• Can GP disinfectants/conditioners go in the eye?
• Non-abrasive surfactants/cleaners can remove which deposits?
• What is the primary purpose of enzyme and protein removers in contact lens care?
• What base curve should be chosen for this patient given the data?
• How do we educate a new GP lens wearer on how to apply a GP lens?
• How do we recenter a displaced lens?
• In an ideal GP lens fit, how much movement is expected?
• Can combination agents for GP lenses go in the eye?
• What is an example of a re-wetting drop?
• What are the two enzyme and protein removers used?
• How should we educate a patient on medication use with GP lenses?
• Which description best describes a steep GP lens fit?
• What lens material is contraindicated with abrasive surfactant/cleaners?
• In predicting GP lens power, when should vertex distance conversion be applied?
• Which system acts as an adjunct to surfactant cleaning to remove stubborn deposits?
• Which statement about hyper Dk GP lenses and warpage is correct?
• What emergency improvisation can be used to remove a GP lens if other methods fail?
• What are the keratometric measurements provided for this patient?
• For a previous GP wearer with new lenses, what should the follow-up schedule include?
• With a flat fitting lens, a plus/minus tear lens is created and we need to add plus/minus to compensate.
• What is one mechanism by which disinfectants work in GP lens care products?
• When a GP lens is steep, how should the OAD be adjusted?
• Progent protein remover must be rinsed off after use.
• What are the three ways we can educate a GP lens patient to remove their contact lenses?
• Which statement about preservative usage is true?
• Given refraction -3.00 -1.25 x 180, Ks 44/45 @090, BCR 7.58 mm, what would be the predicted GP lens power?
• The DMV suction cup method is considered essential in which scenario?
• Which two B+L products are used as a disinfectant system?
• How do we predict the lens power needed when fitting a GP lens empirically?
• What is the replacement frequency for GP lenses?
• When a GP lens is judged to be too flat, which base-curve adjustment is recommended?
• How long can continuous wear GP lenses be worn before removal?
• Can this patient wear a spherical GP lens despite astigmatism in the example?
• What emergency method can be used to remove GPs?
• What would be the tear layer for a patient with Refraction: -2.00 -1.00 x 180, Ks: 43.50/44.50@090, and BCR 43.75?
• Which sequence correctly reflects steps typically addressed during the first GP lens dispense appointment?
• Abrasive cleaners can cause which changes to GP lenses?
• Can GP cleaners go in the eye?
• Which removal method is considered the preferred technique for GP lens removal?
• When a GP lens is steep, which base-curve adjustment is recommended?
• Which GP lens removal method is described as using a suction cup to lift the lens?
• Which of the following is NOT listed as an example of a 2-in-1 system containing a cleaner and disinfectant?
• If you have a 2.00D flatter than K lens, what is the expected tear lens?
• How should we educate a patient on hygiene with GP lenses?
• True or False: Theoretically, the lens power produced via an empirical fit vs a diagnostic fit should be the same.
• A disinfection and care system for GP lenses is designed to do what?
• Can GP rewetting drops go in the eye?
• What is the contact lens power for this patient after selecting BC?
• What is a purpose of laboratory cleaners and solvents?
• Are 2-in-1 cleaner and disinfectant systems ideal for patients who tend to deposit?
• When comparing BCR to flatter Ks, which approach should be used to select tear layer?
• When teaching GP lens insertion and removal, the patient should be able to successfully insert and remove the lenses at least ______ times.
• Compliance: _____% of GP patients report themselves as compliant.
• Which statement is correct about removing cleaner from GP lenses?
• Which description is commonly associated with a flat GP lens fit?
• To confirm competence in GP lens handling, a patient should be able to insert and remove the lens at least how many times?
• Which statement best describes a typical characteristic of 2-in-1 systems?
• How does the DMV method remove GP lenses?
• Which feature is associated with a flat GP lens fit?
• Which action should be avoided regarding GP solutions to maintain safety?
• How often is Progent protein remover added?
• Which practice is recommended for rinsing GP lenses to reduce infection risk?
• Disadvantages of using an abrasive surfactant to clean GP lenses?