The retina is the light-sensitive layer of tissue, lining the inner surface of the eye. The eye creates an image of the visual world on the retina, which serves much the same function as the film in a camera. Tears in the retina can impair your vision and lead to retinal detachment. A detached retina occurs when the retina strays away from the inside wall of the eye causing vision your vision become blurred or distorted. If retinal detachment is left untreated, you may experience permanent vision loss in the affected eye. A detached retina and tears may be caused by eye disease, nearsightedness, injury, aging, tumors and surgery.