Targeted radiation treatment for tumors affecting the visual system and for some inflammatory conditions.
Radiation therapy uses targeted high-energy beams to treat tumors affecting the visual system. It's also used for some inflammatory conditions like severe thyroid eye disease.
Key Takeaways
- Treats tumors affecting visual pathways
- May be alternative to surgery
- Various techniques available
- Side effects depend on location and dose
- Often preserves vision
Common Uses
Tumors
- Optic nerve sheath meningioma
- Pituitary tumors (residual/recurrent)
- Brain tumors near visual pathways
- Ocular melanoma
Non-Tumor
- Severe thyroid eye disease
- Orbital inflammation (selected cases)
Types of Radiation
Fractionated Radiotherapy
- Multiple small doses over weeks
- Standard for many orbital tumors
- Less damage to normal tissue
Stereotactic Radiosurgery (SRS)
- Highly focused single dose
- Gamma Knife, CyberKnife
- For small, well-defined targets
Proton Beam
- Precise depth control
- Less exit dose
- Specialized centers only
Orbital Radiation
- For thyroid eye disease
- Low-dose, 10 sessions typical
- Reduces inflammation
What to Expect
Before Treatment
- Imaging for planning
- Mask fitting (for head treatment)
- Simulation session
During Treatment
- Lie still on table
- Each session 15-30 minutes
- Daily (weekdays) for several weeks
- Painless
After Treatment
- Gradual effect over months
- Monitor for response
- Watch for side effects
Side Effects
Acute
- Fatigue
- Skin irritation
- Hair loss in treatment area
Long-Term
- Radiation optic neuropathy (months-years later)
- Dry eye
- Cataract
- Secondary tumors (rare)
Medical Disclaimer: This information is for educational purposes only and does not replace professional medical advice.
Medically Reviewed Content
This article meets our editorial standards
- Written by:
- Hashemi Eye Care Medical Team
- Medically reviewed by:
- Board-Certified Neuro-Ophthalmologist (MD, Neuro-Ophthalmology)
- Last reviewed:
- January 30, 2025