Podcast
Questions and Answers
What does a larger base curve result in?
What does a larger base curve result in?
- More steep lens
- Increased lens movement
- No change in lens curvature
- More flat lens (correct)
What does a smaller base curve result in?
What does a smaller base curve result in?
- Decreased lens stability
- Increased lens movement
- More steep lens (correct)
- No change in lens curvature
By how much does the flat diameter increase as the flat K goes up by 0.2?
By how much does the flat diameter increase as the flat K goes up by 0.2?
- 0.5 (correct)
- Not mentioned in the text
- 0.2
- 0.7
What is the base curve (BC) value mentioned in the text?
What is the base curve (BC) value mentioned in the text?
What does no movement in blink or up gaze indicate about the base curve of the lens?
What does no movement in blink or up gaze indicate about the base curve of the lens?
What is the purpose of the push-up test mentioned in the text?
What is the purpose of the push-up test mentioned in the text?
What should be quantified when observing movement of the lens during blinking?
What should be quantified when observing movement of the lens during blinking?
What does it indicate if there is no movement when focusing a 1mm circle on the inferior nasal aspect of the soft lens and half on bulbar conj during blinking?
What does it indicate if there is no movement when focusing a 1mm circle on the inferior nasal aspect of the soft lens and half on bulbar conj during blinking?
What is half a movement of the dotted line during blinking equivalent to?
What is half a movement of the dotted line during blinking equivalent to?
"+ push-up test" is used to determine what about the lens?
"+ push-up test" is used to determine what about the lens?
What does a negative push-up test indicate?
What does a negative push-up test indicate?
What does the push up test help determine?
What does the push up test help determine?
Why might the lens feel sore and cause red eyes?
Why might the lens feel sore and cause red eyes?
What is the primary purpose of performing a piggy back lens system?
What is the primary purpose of performing a piggy back lens system?
How is the base curve related to the fit of the lens?
How is the base curve related to the fit of the lens?
What is indicated by excessive lens movement during primary and up gaze?
What is indicated by excessive lens movement during primary and up gaze?
What does the presence of central air bubbles in the lens indicate?
What does the presence of central air bubbles in the lens indicate?
What is a common method to resolve a loose lens fit?
What is a common method to resolve a loose lens fit?
Why might there be hyperemia in the nasal quadrant when using a piggy back lens system?
Why might there be hyperemia in the nasal quadrant when using a piggy back lens system?
What does it mean if the lens edge does not move and stays stationary?
What does it mean if the lens edge does not move and stays stationary?
What is indicated by more than 0.5mm of lag down as the patient looks up or laterally?
What is indicated by more than 0.5mm of lag down as the patient looks up or laterally?
How is the sag depth related to changing the lens fit?
How is the sag depth related to changing the lens fit?
What is the main difference between Hydrogel and Silicon Hydrogel lenses?
What is the main difference between Hydrogel and Silicon Hydrogel lenses?
What happens if a person with dry eyes is fitted with a contact lens with high water content?
What happens if a person with dry eyes is fitted with a contact lens with high water content?
What is the purpose of the ultrasoft hydrophilic polymer network on the surface of DAILIES TOTAL1® lenses?
What is the purpose of the ultrasoft hydrophilic polymer network on the surface of DAILIES TOTAL1® lenses?
What is the potential consequence of using reusable Silicon Hydrogel lenses?
What is the potential consequence of using reusable Silicon Hydrogel lenses?
What should be considered when selecting a replacement lens care appropriate for a patient?
What should be considered when selecting a replacement lens care appropriate for a patient?
What should be avoided when fitting soft lenses using keratometry?
What should be avoided when fitting soft lenses using keratometry?
How does oxygen transmission relate to the water content in contact lenses?
How does oxygen transmission relate to the water content in contact lenses?
Why do Silicon Hydrogel lenses have more stiffness compared to Hydrogel lenses?
Why do Silicon Hydrogel lenses have more stiffness compared to Hydrogel lenses?
What is the potential consequence of insufficient tear exchange under a soft lens?
What is the potential consequence of insufficient tear exchange under a soft lens?
Why is fitting a person with dry eyes with a contact lens with high water content not recommended?
Why is fitting a person with dry eyes with a contact lens with high water content not recommended?
Why is corneal topography not used to fit soft lenses?
Why is corneal topography not used to fit soft lenses?
What is the role of keratometry in fitting soft lenses?
What is the role of keratometry in fitting soft lenses?
