24-Gy Low-Voltage X-Ray Irradiation With Ranibizumab Therapy for Neovascular AMD: 6-Month Safety and Functional Outcomes OPHTHALMIC SURGERY LASERS & IMAGING Morales Canton, V., Quiroz-Mercado, H., Velez-Montoya, R., Lopez-Miranda, M. J., Moshfeghi, A. A., Shusterman, E. M., Kaiser, P. K., Sanislo, S. R., Gertner, M., Moshfeghi, D. M. 2012; 43 (1): 20-24


To describe the 6-month safety and preliminary efficacy outcomes of the use of 24-Gy radiation with intravitreal ranibizumab for patients with neovascular age-related macular degeneration (AMD).A single treatment of a non-invasive, externally delivered low-voltage x-ray irradiation at a dose of 24 Gy was administered in one session through three locations in the inferior pars plana in a consecutive series of patients with neo-vascular AMD (treatment naïve and previously treated). Optical coherence tomography (OCT) and Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity examinations were performed at 1 week, 1 month, and monthly thereafter with quarterly fluorescein angiography.Nineteen patients completed 6 months of follow-up. There was no evidence of radiation retinopathy, optic neuropathy, or cataract. The mean baseline ETDRS score was 38.3 ± 19.5 letters. At 6 months, the corresponding ETDRS score was 44.7 ± 16.8 letters. At 6 months, the mean change in visual acuity was 6.4 ± 9.8 ETDRS letters. Patients received an average of 0.4 additional ranibizumab injections following the initial two mandated injections.A single treatment of external 24-Gy low-voltage x-ray therapy in conjunction with ranibizumab demonstrated an overall improvement in visual acuity in patients with neovascular AMD at 6 months, with no radiation-related adverse effects.

View details for DOI 10.3928/15428877-20111129-01

View details for Web of Science ID 000305342600003

View details for PubMedID 22251841