This is called a retinal detachment , and it can cause you to lose your vision. Most retinal tears can be treated with the argon or krypton laser, if the tears are found before the retina detaches. The laser helps bond the retina to the back wall of the eye, preventing a retinal detachment. If retinal detachment has already occurred, the laser cannot be used and an operation is usually necessary to repair the detachment. Sealing leaky retinal blood vessels, such as those found in diabetic retinopathy , can also be done with a laser.
Diabetes can cause blood vessels in the retina to grow abnormally.
Laser surgery can seal leaking blood vessels to reduce macular edema and help prevent further vision loss. Laser surgery can slow or stop the growth of abnormal retinal blood vessels and decrease the chance of bleeding inside the eye. The macula is the small, central area of the retina that allows us to see fine details clearly. Degeneration of the macula therefore affects your central or reading vision. In this case abnormal retinal blood vessels cause bleeding and scarring of the macula.