I would start some warm wet soaks to the eye (keep everything as clean or sterile as possible) while holding her in your lap for 10 minutes or more. Get some Terramycin eye ointment from the feed store and apply to the eye. The second time, try to remove the opaque covering with a QTip or tweezers (very gently.) This looks like a plaque from an infected eye that has hardened and dried. It really needs to be removed to see if the eye is still healthy, and may take some times. Sometimes, respiratory infections can cause this, and other times it can be infection from debris in the eye or peck wounds.