person A: My friend's eyes keep hurting at night. She's been to the doctor_comma_ but they can't find anything wrong with her
person B: The weirdest thing... it sucks when you dont know whats causing it. Has she been to an eye doctor or just a general dr? 
person A: She's just been to her doctor. I'll see if she can see a specialist.
person B: sounds like a good idea i hope her pain goes away asap! 