This study will recruit 40 diabetic patients who are scheduled for hyperbaric treatment due to different indications such as chronic wounds or radiation damages and who also have diabetic retinopathy. These patients will undergo opthalmic physical examination including fundus photography and OCT (Optical Coherence Tomography - optical IR retinal photography). Screening for these patients will be conducted at the Hyperbaric chamber at Assaf Harofe Medical Center for all diabetic patients prior to their first treatment.