Surgery is declining in popularity but may be the treatment of choice in females of childbearing age, because of the possibility of ovarian damage from the radioactivity. A small number of cases will require eye surgery. Weakness and tremor can be mistaken for decompression accidents. Bulbar involvement can occur. A third of patients undergoing surgery will be hypothyroid within 10 years.
Patients therefore have to review regularly for the rest of their lives.
Nitrox Diving and the Thyroid Nitrox is the mixture of increased amounts of oxygen in the breathing air of divers. Thyroid hormone, either Synthroid or thyroxin produced by the body or taken by mouth act in this manner. To my knowledge there have been no studies that have shown any increased risks to the person with hyperthyroidism, even untreated. Your doctor should be the final arbiter in this matter. This can occur in one or both eyes in association with a high thyroid condition.