Patient: I had laser surgery for glaucoma, but I feel that it is not as good as before. Can I have glaucoma surgery again to improve my vision Li Mei, Ophthalmology Department, Peking University First Hospital: You must understand that glaucoma surgery is not a vision enhancement surgery. Sometimes, due to the trauma of the surgery, the vision may even be reduced. Therefore, the effect of the surgery cannot be measured by whether the vision is improved or not. Of course if the aim of the treatment is achieved, the end result is to protect the visual function and avoid serious consequences caused by glaucoma, such as blindness. Please follow up regularly, under the guidance of glaucoma specialist, you should carry out reasonable anti-glaucoma treatment and improve your vision through cataract surgery if necessary.