Lecture 21 Myopic Management

Question 1

What is the predicted prevalence of myopia in 2050?

Answer 1

50%

Question 2

When is myopia most progressive?

Answer 2

6-12 years

Question 3

Why is myopia management important?

Answer 3

-One dioptre less in final Rx gives a 40% reduction in the lifetime risk for myopia maculopathy.

• Less unaided visual disability
• Greater options for future corrections * -Thinner, lighter glasses

Question 4

What axial length corresponds to 1D of myopia?

Answer 4

0.4mm

Question 5

What is the genetic risk of myopia when both parents are myopic?
What is the genetic risk of myopia when one parent are myopic?
What is the genetic risk of myopia when no parents are myopic?

Answer 5

1 in 2
1 in 3
1 in 4

Question 6

How can increased time outdoors influence myopia in children?

Answer 6

• Increased time outdoors is effective in preventing the onset of myopia as well as in slowing the myopic shift in refractive error.
• outdoor time was not effective in slowing progression in eyes that were already myopic.

Question 7

How long should children wear misight lenses for?

Answer 7

6+ days, 10+ hours per day

Question 8

How do miyosmart spectacles work?

Answer 8

central zone (9mm) for distance refractive correction

400 multiple defocus segments surrounding the central zone

Question 9

When does myopia stop progressing?

Answer 9

48% STABILISED BY 15 YEARS
77% STABILISED BY 18 YEARS
90% STABILISED BY 21 YEARS