Amblyopia Tx: 1

Question 1

What are the 3 steps of treating amblyopia?

Answer 1

1. Correct RE
2. Penalization therapy
3. Vision Therapy

Question 2

What happens when we correct and amblyopes RE?

Answer 2

1. Gives clearest image to each eye (may not approve acuity)
2. Reduce size of strab angle
3. Improve sensory fusion
4. Improve motor fusion skills

Question 3

What is the Rx based on for an amblyope? How much should we subtract from the cyclo?

Answer 3

• Cycloplegic ret/refraction
• subtract 0.50-1.0D
• always cut both eyes equally

Question 4

Should we give the full or a partial astigmatic correction?

Answer 4

Full

Question 5

What 3 things should we fully correct?

Answer 5

Fully correct myopia, astigmatism and anisometropia

Question 6

If we cut a hyperopic Rx, what should we consider?

Answer 6

giving a near add

Question 7

Accommodation in an amblyope is driven by the eye with the ____ amount of ametropia.

Answer 7

Least

Question 8

How can we reduce aniseikonia in an anisometropic patient?

Answer 8

Use CLs

Question 9

What did ATS 5 conclude?

- Asked “Does VA improve with optical correction?”

Answer 9

• VA improved
• 20/40-20/100 = 33% improvement
• 20,125-20/150 = 6% improvement
  (inversely related to magnitude of aniso)

Question 10

What did ATS 13 conclude?

Asked “Does VA improve with optic correction ONLY?”

Answer 10

Refractive correction alone improves VA in patients with anisometropic and strabismic amblyopia

Amblyopia can be resolved with spec correction alone

Question 11

What did ATS 7 conclude?

Asked “ Does optical correction help bilateral amblyopes?”

Answer 11

• 75% had 20/25 Va within 1 year

- improvement of VA = improvement of stereo

Question 12

What’s the follow up schedule for amblyopes after optical correction?

Answer 12

every 6 weeks

Question 13

How long should you follow a patient?

Answer 13

• Until acuity does not improve on 2 subsequent visits

- consider additional tx