Post operatively,irritation or discomfort especially over the corners of the eye is very common. But need not worry about it.Try using a good lubricant eyedrops(Refresh Tears/ Tears Naturalle Forte/Aquasurge eye drops) once every 3 hrs in the affected eye for a day. If the irritation persists then consult your eye doctor directly to look for any dust particle inside the eye.
Any decreased vision in other eye must be examined for cataract
changes( if it was not operated before) or any power changes( refraction
) and retinal status to find the cause.
Hope this helps. Take care :-).