Hello, I have gone through your query and understand your concern. I suspect you probably suffering from Glaucoma. It is due to the increase in the pressure inside the eye. There are several types of glaucoma and it also caused by varied reasons. If left untreated untreated, you may loss vision early due to damage of nerve fibers in the eye by increased pressure. Thus you need further Ocular investigations like Tonometry ( to measure the pressure in eye), Gonioscopy, Perimetry, Pupilary dilatation and Ophthalmoscopy. If you initiate the treatment earlier with drugs,you can save the vision. If vision once lost in glaucoma, it is Permanent. Hope this helps. Please write back for further queries. Wishing you good health.