Oh my god, I have exactly the same thing, although I'm 21 and I feel that there is a cyst on the back of my head (near the part of the brain which controls breath and heartbeat), to be exact its on the back and a little bit on the right side, I have this pounding pain sourcing from it which goes in a line of pain from this 'bump' to my right ear but a little bit further.. more like behind my right eye and its internal pain not close to the skin like pain inside my skull, I have some sort of phobia for these stuff, consider me as Sheldon Cooper from The Big Bang Theory... I tried squeezing the bump, it didn't pop or anything, its not directly under the skin, also, when the pain starts and I get blurry (right at this moment) I start wearing my glasses, this is the first time my vision gets blurred, I am really annoyed, I feel like its a brain tumor which strikes the eye nerve?.. I am currently remembering the scene were Dr.Dolittle removes the blood clot from the tigers brain, seriously I am freaked out.. I asked my cousin(PHd in Medicine) he says its nothing serious, I constantly asked for an CT Scan for my brain, he didn't accept, he says its nothing serious.. I hope he is right, even though hope can destroy you.
Kindly, please reply back if you found a solution for your problem since it's been 2 years since you made this post.
PS: I don't believe its caused from excessive staring at a monitor, I am a software developer and I'm spending more than 8 hours/day infront of the monitor, but this blurry vision started after 2 days I came from a resort in Turkey (I didn't look at TV Monitors, PC Monitors or anything electronic for more than 30 seconds on a daily basis while I was there and also while I came back I only checked my emails on my smartphone).
PSS: The blurry vision started when I ate dinner (The only new thing I ate was Jam, the rest was food I'm used to eat since I was born), also the flashing light annoyed my eyes when my dad called me on my smartphone... after that my left eye started getting blurry.
PSSS: I've been smoking for 6 years.
Thanks a lot if anyone cared to reply back to me on what they did to fix this annoying pain.