- Ptosis evaluation in suspected Myasthenia Gravis
- Not useful in extraocular Muscle Weakness evaluation
- Neuromuscular transmission improves at cooler Temperatures
- Fill small bag (or surgical glove) with ice
- Ptosis improves in 80% of Myasthenia Gravis with topical ice
- Ptosis does not tend to improve in the absence of Myasthenia Gravis