- ET same for N and D
- No improvement with plus correction.
- Normal AC/A ratio
- Amblyopia is common
- Onset: 2 years of age - even in late adulthood.
- BSV is weak
- Full duction
- Breakdown of an esophoria (most common)
- 6th nerve paresis
- Myasthenia gravis
- Tyroid eye disease.
- Conservative treatments such as vergence therapy, prism are usually not effective
- Surgery is required: bilateral medial rectus recession
*it is not that easy to treat this kind of patient, after the strabismus surgery, patient might end up with diplopia. So, what should we do? Comment and share your opinion.
source: Miss Melanie Yeoh, orthoptist.