Orbital lymphoma can be diagnosed via a biopsy of the eye and is usually treated with radiotherapy or in combination with chemotherapy.

Symptoms of this form of ocular lymphoma include painless decreased vision, sensitivity to light, a red eye, and floaters.

Diagnosis is difficult due to its gradual onset and the fact that the symptoms are the same as other diseases.

[8][9] Radiotherapy dose in range of 30-45 Gy administered in fractions are advised in treating the local orbital lymphomas.

[13][14][15][16] Although intraocular lymphoma is rare, the number of cases per year is rising, affecting mainly people in their seventies[17][18] and immunocompromised patients.

[19][20] A recent study has shown that ocular lymphoma is more prevalent in women than men.