The first part of your vision affected is usually your peripheral vision, as the detachment most often begins at the sides of the eye. As the condition spreads, the loss of vision will also spread. Eventually the entire retina is detached and a total loss of vision is experienced. This may be very quick, sometimes within a matter of hours. Surgery is then required to reattach the retina to prevent any permanent vision loss.
If caught early enough (within 24-48 hours of the initial retinal tear appearing), a simple laser surgical treatment is all that is required. If the retinal detachment is allowed to spread before surgery, then more difficult techniques may be required that not only will need longer recuperation times, but the chances of permanent loss of vision increases. It therefore cannot be overstated the importance of seeking help the moment the symptoms appear.