Hello Dear,
There could be many reasons for blurry vision with eye pain like-
Refractive eye conditions like Myopia,Near-sightedness ,Presbyopia,Far-sightedness ,Uncorrected vision disorder ,Wrong eyeglasses,Eye irritation ,Dry eyes
Eye conditions like iritis ,temporal arteritis,migraine,neuralgia etc.It is difficult to find the cause without any investigations.
If the symptoms worsen you should consult an ophthalmologist .
Best