Hi there is nothing to relate with blurring of vision and chalazion
1) relation is between oral steroids wysolone tablet and eye pressure or blurring of vision
Next Steps
consult an ophthalmologist and also check your eye pressures and have detailed examination
since u were using steroids it mandatory
1) to check eye pressure, 2) also any cataract change in lens 3) rule out that steroid responder or not so please get checked as soon as possible