PPO II Flashcards
What is the goal of optical prescribing?
Provide clear and comfortable vision
What else can glasses treat other than refractive error?
Amblyopia
Some binocular vision disorders
Double vision
Eye protection (children and monocular patients)
What can poor prescribing decisions lead to?
Asthenopia
Reduced visual function
Problems with adaptation (ex. PALs)
Accelerate progression of refractive error
Unhappy and angry patients :(
What happpens if you have too little fog?
You have a poor control of accommodation
What happens if you have too much fog?
Stimulation of the patient’s tonic accommodation
What can be induced by the phoropter?
proximal accommodation
Sleeve down uses _______ mirror which _______light
plane; diverges
Sleeve up uses ______ mirror which _______
concave; converges
Why do you need to relax accommodation for phoropter retinoscopy?
Accurate findings
If needed - will need to undergo cycloplegia (relax ciliary bodies with agents)
If both meridians are with motion, which meridian should you neutralize first?
Meridian further from neutrality
- smaller
- thinner
- less bright
If one meridian is with and the other meridian is against, which meridian should you neutralize first?
with the meridian
If both meridians are against motion, which meridian should you neutralize first?
Meridian closest to neutrality
- larger
- thicker
- brighter
What is the three eyed control method to control for accommodation?
OD - OS - OD