

ESTRO IMRT Course May 2013
Optic Neuropathy Risk after RS
The risk of developing a clinically significant RON was
1.1%
for patients
receiving
12 Gy
or less with a median F/u of 40 months
Patients receiving prior or concurrent EBRT had a greater risk of
developing RON after radiosurgery
Stafford et al., IJROBP, 2004
Hasegawa et al., Nerurosurgery, 2010
<8Gy
<9-14Gy
≥14Gy
Patient had previous EBRT 60 Gy