Be very cautious, as the doctor says. You have signs of a normal process called PVD.
I will give you some information on retina symptoms, There is no reason to suspect anything serious with you right now, but retina problems are not common knowledge, and you may be able to help a friend one day.
I developed a serious condition from these flashes, but I have other conditions that make me high risk. My retina detachment started with flashes, and the doctor said he could find nothing. My flashes started a month before the detachment. A retina specialist needs to catch a detachment within the first 2 weeks.
Flashes alone do not usually signal a detachment. A detachment is signalled by a sudden rush of floaters, increased flashes and perhaps a curtain or glass-like object in the vision.
Be vigilant and check in with the doctor if the flashes continue another week, as Dr. Hagan has advised.
If you experience an increase in flahes or floaters, or symptoms of a curtain, see an Eye MD immediately.
With all due respect your family MD cannot determine the cause without proper training and equipment neither of which he/she has. Your symptoms suggest a posterior vitreous detachment with vitreous traction. If the light streaks continue another week or so I would get a second opinion from a different Eye MD.
JCH II MD
I am a community leader here, not a doctor. I am also an experienced eye patient. Welcome to our community
Find an ophthalmologist at www.aao.com.
This is the best way to monitor the health of your eyes, and to protect yourr vision.
The doctor will advise you.