I Am A Partially Retired 63 Yr Old Man. I

I am a partially retired 63 yr old man. I work part-time in accounting, paying invoices. I was sitting at my desk yesterday, when I suddenly and slowly starting losing my vision. Then my eyes seemed to flush and my vision was back, but I was extremely fatigued. I do have macular edema in my left eye, however, both eyes were affected by this episode.