### Patient: Doctor, I have been experiencing back weakness and diminished vision lately, and my eyes are red and itchy. I also noticed some pus in my sputum. Can you tell me what could be causing these symptoms?
### Doctor: It sounds like you might have trichiasis, which is a condition where eyelashes grow inward and irritate the eye. This can cause symptoms like redness, itching, and even infections such as pus in the sputum. Additionally, trichiasis can put pressure on the eyes, which may cause back weakness and diminished vision.