This is Foreign body sensation, please dont rub or splash water in your eyes. There are various reasons for this symptoms
Instantly it is advised to not to blink too much, keep ice over the closed eyes for 3-4mins [on &off], if the redness reduces there is a possiblity of having allergic conjunctivitis .
Next Steps
review with a picture or visit ophthalmologist for slit lamp examination
Health Tips
keep your eyes closed as much as possible.
use a tear drop.
donot rub eyes.
wear any eye protective gear.