A large difference in vision between the left and right eyes can usually be corrected by improving bad habits, wearing glasses, surgical treatment and other ways. 1. Improve bad habits: The large difference in vision between the two eyes is usually caused by lying on the side for a long time to read a cell phone or a book, bad eye posture, etc. Normally, we should pay attention to develop good eye habits, keep a proper distance when reading a book or a cell phone, and do outdoor exercise, which will help to improve the situation of the large difference in vision between the left and right eyes. 2. Wear glasses: If the way to improve the bad eye habits have no effect, you can go to the hospital for eye examination, there is a refractive error, can be corrected by wearing the right degree of frame glasses. If frame glasses are not effective, corneal contact lenses can be chosen under the guidance of the doctor. 3. Surgery: If the difference in vision between the two eyes is large due to the difference in refractive status of both eyes and cannot be corrected by wearing glasses, it can be corrected by laser surgery in regular hospitals. If the difference in vision between the left and right eyes is large, please go to the regular hospital in time, and choose the appropriate treatment method according to the actual situation under the guidance of the doctor, so as to avoid the adverse consequences.