Week 13: Myopia Control Flashcards
It’s predicted that by 2050 what percentage of the world’s population Will be myopic
50%
What Causes myopia?
-Genetics
-Near work
What are symptoms of myopia?
-blurry distance vision
-Squinting
-Headaches and eye strain
How is axial length measured?
Distance from anterior surface of the cornea to the RPE
How long is axial length
16.8mm in infancy to about 23.6mm in adulthood
What is the maximum elongation per year?
0.2mm
An axial change of 1 mm is equal to how many diopters
2-2.50D
How can axial length be measured?
Ultrasound or optical biometry
How long should miSight contact lenses be worn to get the maximum treatment effect?
A minimum of 10 hours a day at least six days per week
What is the average effectiveness of myopia management?
50% (Rx Increasing at -1.00 per year may reduce to -0.5 per year)
How long does it take ortho-k lenses to improve your vision?
About two weeks
After discontinuing ortho-k use, how long does it take your eyes to revert back to normal?
2 to 3 weeks
What are the two most common ortho-k lens types?
-Corneal reshaping treatment (CRT)
-Vision shaping treatment (VST)
