Can you get someone to hold her so you can get a better photo?
What are you seeing - swelling, discharge, pus, bubbles, etc.?
A peck to the eye, dust/dirt, molds and respiratory illness are a few common problems that may affect a chicken's eye. General care for one eye that is swelling, watery or has pus in it would be to flush it with saline, remove any dirt/pus you see and apply Vetericyn eye gel, Terramycin eye ointment or other suitable ophthalmic ointment.
If any symptoms like lethargy, coughing, sneezing, runny nose (mucous) or going off feed/water occur, then she may need further supportive care and be seen by a vet.