Thanks to everyone for all of the great tips and information!
Something occurred to me in my sleep/wake last night;
In my follow-up appointment, while my sleep doc was reviewing my results with me, she noted that I had not experienced any 'microsleeps' between the sanctioned naps.
However, each time the technician came into the room to wake me up, she also disconnected the lead wires from the box on the beside table, that transferred the information to their computers.
Wouldn't that mean that if I had experienced any episodes of microsleep between naps, that they would not appear in the results?
IMO, you are pathologically sleepy or else you wouldn't be able to sleep for four consecutive naps. And six minutes is a fairly short latency. Sounds like IH to me with the sleep latency, no SOREMS, and long naps but I'm certainly no expert.
The main reason I'm replying is because of the visual disturbance you mentioned--my eyes also lose focus at random times. I've mentioned it to two different sleep doctors and they acted like they had never heard of it. Like you, my vision checks out fine during my annual exams. I would think it must be a CNS issue since it's transient. I was advised to get tested for diabetes--been there, done that, blood glucose was fine.
If it is possible, you may want to repeat the daytime test without any meds, I know that may mean weaning from the Prozac but it may be worth it to get a reliable and perhaps more definitive result. Also, could the antidepressant be causing the EDS? Just some thoughts...
Excuse me, I don't often call my colleagues ignorant, but in this case, your doctor's completely ignorant. Fluoxetine and other SSRIs absolutely, positively suppress REM! In fact, not only do they decrease the total amount of REM sleep, they increase REM latency -- and rapid-onset REM is very thing you're looking for on an MSLT.
There's no way to say that an MSLT rules out narcolepsy while a person is on the maximum dose of fluoxetine. Fortunately for you, at least she recognizes the EDS and you're going to have a trial of Ritalin. But really, what is it with these sleep docs???
Same thing happened to me with Adderall. I currently split my 10mg dose and space them out 2-3 hours like Purpley said. I don't always take the second dose. This eliminates the jitters for me!