You haven't mentioned why you were given Alrex
eye drops as its dosage varies depending upon the eye disorder( allergy/uveitis/ conjunctivitis
Alrex eyedrops should not be overused or misused too, as in some ocular disorders it will worsen the disease or cause secondary ocular problems too.
Ideally,Alrex drops should be tapered before stopping,but,Since your vision is getting blurred with puffiness, I would suggest to stop using the eye drops immediately and consult your eye doctor immediately to make sure your Cornea
,the transparent part of the eye is ok and you are not making the condition worse by adding this eye drop.
So take care and let us know your prognosis. Get well soon :).