From your history ,it seems to be case of amblyopia but you are already 25 yrs old,in this age amblyopia is incurable, Vision improvement is only possible up to 10- 12 yrs by pleoptic treatment.

Hello Good morning a. It is very difficult to comment without examining you b. This could be due to amblyopia (lazy eye). in this disease, due to some underlying cause, vision gets blurred at very young age and without proper treatmnet it does not improve. kindly share your medical reports so that i may review them and guide you Regards

Consult an ophthalmologist to find out exactly what is causing the blurring. Causes may range from simple causes like refractive errors to more serious congenital anomalies of the eye. But whatever the cause, amblyopia must have set in by now and the chances of u getting full vision in that eye are very low, but there may be some improvement when the cause is treated.