You are correct. This is a very interesting issue....
I do not think that this is due to any type of floater since it is in both eyes. I believe that the problem is going to be in a very small section of your visual cortex or the part of the brain that coordinates the information from the central part of your retina,called the macula
This lesion may be too small to show up on cat scan and may require special MRI imaging. Also, I would suggest a complete eye examination by an ophthalmologist that would include amsler grid testing of each eye, visual field testing of each eye and, possibly, fluorescein angiography.
If all the above do not show any problems then specialized retinal testing with focal ERG may be helpful. Usually these types of tests are only available in a University setting.
The downside to all of this is that, if a lesion is found, there is not a very often anything that can be done to fix it.
Does this make sense to you?
Please remember the top 3 ratings are positives and Excellent service is my goal. Your positive feedback is how we are compensated. If you aren't 100% satisfied, just click "reply." I will be happy to discuss your issue in more depth and do everything I can to provide you with the information you require.
Otherwise, a high positive rating is very much appreciated, bonuses are great, and find me anytime for follow up.
Let me know if you have further questions.