Both drinking or rubbing alcohol will cause chemical burn on the cornea and conjunctiva. It is very painful condition and predispose the patient to infection.More than likely you just rinsed out the natural oils and tear film and the eyes feel a little dry.This can disrupt the ph of your tear film. Likely your eyes will return to normal within 24-48 hours. Rinse your eyes with sterile saline solution, unisol is a brand available in most drugstores. Just rinse your eyes for a few moments. Then instill preservative free artificial tears (systane, refresh, or other preservative free brand) every 2 hours today and then 4x's a tomorrow. If no improvement in symptoms by tomorrow, then see an eye doctor. You may need an anti-biotic or anti-inflammatory eye drops to help resolve. Also, if you note excessive crusting around eyelashes upon waking, increasing light sensitivity or continuous mucus discharge see an eye doctor.