Task: Question Answering
Input (English): First my dental pain , now this : I had no problems with my eyes yesterday , but today my left eye is not able to focus . I had been using an old pair of reading glasses and then tried to put my contacts in and the right eye was fine , but the left eye is not really seeing properly . I called my eye doctor back in my home town . He suspected it was eye strain , given my description , told me to take it easy on my eyes today , and if it was not better tomorrow to go to an eye doctor . 
Question: What did the writer experience before this problem with their eyes ?
Output (English): They had problems with their teeth