It could be because of minor eye infection. Kindly use vigamox eyedrops 4 times/ day for 5 days & refresh tears 3 times/ day for 15 days. Maintain lid hygiene by cleaning discharge periodically with cotton & discarding it. Do not touch eyes again & again.
Next Steps
Review after 5 days .. in case redness, pain or diminution of vision consult local ophthalmologist immediately.