Where do flashes appear in the eyes?

I have had floaters since this August. I had eye pressure 23 and 24 in right and left eye. I use (-5) glasses on my both eyes. I changed my power after 10 years. I'm wearing glasses since 2005. I changed once in 2011 and now. The opthalmologist saw my ultrasound report and given me an eye drop to reduce eye pressure. One month later, eye pressure came down to 20 on both eyes. He changed my eye drop and asked me to visit him in Jan 2021. I had my last dilated retinal exam on sept 25. He told me my eyes are fine after looking through an opthalmoscope. Although I dont see flashes of light like camera flashes, but today I felt I might have seen a very feeble tiny light on the right corner of my right eye. I'm was wearing glasses, so I'm not sure if it was some reflected light. How do these flashes appear? Do they very prominent when they happen? I must add that my vision is fine since the event. I'm not having any trouble seeing. Please tell me the nature of the flashes.