Accidental shining of the eye by the laser pointer will cause transient blurred vision, photophobia, tearing, severe pain in the eye, in addition to conjunctival congestion, which is mainly due to laser damage to the conjunctiva or cornea, resulting in discomfort. You can protect your eyes with medications that stimulate the growth of the corneal epithelium, such as calf blood deprotein eye gel or antibiotic eye drops to prevent infection. Usually after a few days the epithelium recovers, the symptoms will slowly disappear and usually do not cause much damage to the eye.