Follow-up/Toxicity

Question 1

What are the late side effects of orbital RT?

Answer 1

Cataracts, permanent dry eye, retinopathy, and optic neuropathy

Question 2

In what pts should orbital RT generally be avoided?

Answer 2

Pts with uncontrolled/severe diabetes and/or HTN; very young pts (<35–40 yo)

Question 3

What is the RT dose limit of the lenses?

Answer 3

Try to limit the dose to <8–10 Gy to prevent cataracts.

Question 4

What other disciplines/specialists should be actively involved in the f/u of pts with TO?

Answer 4

The ophthalmologist and the endocrinologist should be actively involved in the f/u of pts with TO.