Oh...:(
If you watch her blink, there's no third eyelid (Nictitating Membrane)?
Is the third eyelid visible on the right eye (good eye)?
Sometimes pus or debris can get stuck in the eye, I'd still clean with saline and apply the ointment if she still shows a bit of a sunken eye, redness or if...
It does look irritated. Have you ever had respiratory illness within your flock?
General care is to flush the eye with saline, remove any debris or pus, then apply an eye ointment like Terramycin in the eye. Do this daily and see if the eye improves.