IMRT Course 2016

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