II. Indications
- Ptosis evaluation in suspected Myasthenia Gravis
III. Contraindications
- Not useful in extraocular Muscle Weakness evaluation
IV. Mechanism
- Neuromuscular transmission improves at cooler Temperatures
V. Preparation
- Fill small bag (or surgical glove) with ice
VI. Technique
VII. Interpretation
- Ptosis improves in 80% of Myasthenia Gravis with topical ice
- Ptosis does not tend to improve in the absence of Myasthenia Gravis