![]() It can occur in some patients with diabetes. Macular oedema is a swelling of the macula, which lies at the centre of the retina and is responsible for our most detailed vision. These include peripheral field constriction, night blindness, loss of eye muscle function, mild colour vision changes, retinal detachment, glaucoma or burns to the cornea, iris or lens.įor more information about the structure and function of the eye, see The Eye and Vision. Other possible side effects are rare and can also occur due to diabetic retinopathy itself. The procedure can be uncomfortable and individuals can experience transient blurring, glare sensitivity or difficulty with light-dark adaptation in the days and weeks after the procedure. While a very effective treatment, laser photocoagulation is not without side effects. Laser photocoagulation can block off any abnormal blood vessels and stop the damaging leaks, as well as destroy tissue that is stimulating the growth of these new, abnormal blood vessels. Worse still, new, more fragile blood vessels may grow (proliferative diabetic retinopathy), which can also leak and cause damage. This leaking can cause damage to surrounding tissue, as well as preventing oxygen from reaching cells supplied by those blood vessels. Laser photocoagulation is used in diabetic retinopathy, as the retinal blood vessels have begun to leak due to vessel damage from diabetes. These conditions can be treated by laser, which can also be used in combination with other treatments, such as injections of steroids or anti-vascular endothelial growth factor (anti-VEGF) therapies (treatments that block the activity of VEGF which is a chemical that normally promotes growth of new blood vessels) into the eye. As diabetes advances, the tiny blood vessels in the retina are vulnerable to damage and can result in sight-threatening conditions such as diabetic retinopathy and diabetic macular oedema. Laser photocoagulation therapy is used in certain types of eye diseases due to diabetes. These procedures are increasingly common and show excellent results and can remove the need for corrective lenses, such as glasses or contact lenses. Lasers can be used to carefully reshape the cornea of the eye, to correct eye conditions like short-sightedness (myopia) or astigmatism. Laser photoablation is often used in laser eye surgery procedures such as laser-assisted in situ keratomileusis (LASIK) to correct refractive errors (inability of the eye to focus light due to a misshapen cornea). It can also be used to treat some cases of age-related macular degeneration, chronic open-angle glaucoma, retinal tears and even treat premature babies that have retinopathy of prematurity. Laser photocoagulation can be used to treat diabetic eye diseases, such as proliferative diabetic retinopathy or macular oedema. The use of laser in eye diseases is known as “laser photocoagulation” or “laser photoablation”. By carefully selecting the type and strength, a beam of laser can be fired into the eye to destroy diseased tissue or to prevent degenerative eye conditions from worsening. Since the 1960’s, focused, carefully controlled lasers have been used for the treatment of human eye diseases. Laser treatment for correcting refractive errorsĪ laser is an intense, focused beam of light that can heat and destroy human tissue.
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