We got a phone call from the MTC this afternoon telling us that Sam is having blurred vision and that they were sending him to an optometrist to have him checked out. They said he would email us with the results. We received this email this afternoon.
"The doctor said I have been reading too much and the muscles in my eyes were contracted and wouldn't really release so he dialated them and gave me a prescription for glasses, but doubts I will need them so he said to wait. So don't worry - all is good!"
I guess he really is studying hard! Good for him and glad they took care of this before he left the States.