Epilepsy and temporary blindness?

I recently experienced an onset of partial temporary blindness. It happened quite suddenly. While walking upstairs my vision started to get blurry in my right eye, and within about twenty seconds I had lost vision in the bottom right quadrant of that eye. A large portion of the rest of my vision was extremely blurry as well. This lasted for between five and seven minutes, then faded gradually back to normal. I didn't lose consciousness, and my movement and other senses, including my left eye, were not impaired. I have had epilepsy since I was born, though I haven't had a seizure in years. Could this have been a type of seizure?