What's going on with my eyes? These loose folds of skin appeared suddenly a month ago.

This is most likely due to the stress you have been going through in your recent endeavor. Lack of sleep, a less than perfect diet, coffee, and constant frowning can all have this type of effect. This new fold of upper eyelid skin is most likely due to a downward decent of your brow position, than a sudden growth of new skin or an indication of some sort of health issue. Stress is not good for your health. Getting smarter and working hard can be stressful. Relaxation techniques, hydration, frequent breaks, and a lot more sleep are the prescription. You are a long way from needing surgery.

Thank you for your question.
It appears that you have droopy brows. You would need a physical exam to confirm this. This condition is part of the natural aging process. Botox is a non surgical treatment. The injections take a few minutes to perform. The results are temporary. You would be a candidate for an Endoscopic Brow Lift. I've lectured nationally and internationally on the subject. This is a great operation. One makes small incisions. A tv camera is inserted. The surgery is performed while watching television. Pain and recovery are minimal when compared to traditional techniques. For more information please watch the enclosed video. I hope you find this information useful.

Dear DissatisfiedThe best is to not worry about this and do a great job on your PhD dissertation.After that is over, you can have a small trim of excess skin of the upper eyelids under local anesthesia.This is not likely to be a health issue.