Maybe I'm over-reacting.
DD is 2. Every so often (maybe once or twice a day) she rubs her right eye and sometimes complains that it hurts (although she generally forgets about it pretty quickly). If I ask her 'Does it hurt?' (she understands the word) she sometimes says yes.
When she's tired, then her right eye seems to 'look' more tired than the other (it gets slightly redder and slightly wetter if that makes sense).
She's in great health otherwise.
This has been going on for about three/four weeks now and doesn't seem to be getting worse.
Is this just a weird thing that her body does? Or should I get it looked at?