Observing The Clinical Effects Of Retinal Photocoagulation With Laser For Diabetic Retinopathy

Objective:With the development of the people's life, diabetes mellitus has threaten the healthy of people seriously. The most common complication of the diabetes mellitus is diabetic retinopathy, which also results in the blindness. Retinopathy can prevent the progress of the diabetic retinopathy effectively, and it is also the most important method that cures the DR. Observing and evaluating the clinical effects of pan retinal photocoagulation with laser for diabetic retinopathy, and discussing the best time and facula reaction of retinal photocoagulation.Methods:The case was completed in the first Hospital of Jilin university from February 2004 to June 2007. Panretinal photocoagulation with laser were performed on 61 eyes(35 cases) of diabetic retinopathy, including 34 eyes with serious nonproliferative diabetic retinopathy (NPDR), 27 eyes with proliferative diabetic retinopathy (PDR) . The visual acuity, intraocular pressure, slit lamp microscope, eyeground, fundus fluorescein angiography and color photograph were taken 3 months after the surgery. The regular following up lasted for 3 months after photocoagulation. The data were analysed retrospectively.Results:Laser photocoagulation proved effective in 36 eyes (59.0%) with diabetic retinopathy, including 25 eyes (73.5%) with serious nonproliferative diabetic retinopathy (NPDR), 11eyes (40.7%) with proliferative diabetic retinopathy (PDR). The difference is notability through the statistical test P<0.01 in NPDR and PDR. The visual acuity were improved in 13 eyes (21.4%), no changes in 24 eyes (39.3%), decrease in 24 eyes (39.3%). After the therapy, the lens is not change in 57 eyes (93.4%), including 32 eyes (94.1%) with serious nonproliferative diabetic retinopathy (NPDR), 25eyes (92.6%) with proliferative diabetic retinopathy (PDR). The difference is unconspicuous through the statistical test P >0.05 in NPDR and PDR. Laser photocoagulation proved effective in 11 eyes (44.0%) with the facula of type II, and in25 eyes (69.4%) with the facula of type III. The difference is notability through the statistical test P<0.05 in type II and type III. No complication was found in all patients.Conclusion:In this retrospective research, we can make the conclusion: (1) The purpose of the pan retinal photocoagulation is delaying the progress of the illness, accelerating the sorb of the retinoblood, banishing the non-perfusion areas, preventing the reborn of the new vessls, and avoid the blindness, which is not improving the vision. (2)laser photocoagulation proved more effectively in serious nonproliferative diabetic retinopathy (NPDR) than proliferative diabetic retinopathy (PDR). It is shown that diagnosing the serious nonproliferative diabetic retinopathy as early as possibility and laser therapy for preventing the progress of the disease is necessary, and protecting the vision. So, the serious nonproliferative diabetic retinopathy is the best time to cure diabetic retinopathy. (3) The retinal photocoagulation can prevent the drop or lose of the vision. After the therapy, the lens is as the same as the beginning of the operation, but some can accelerate the thickness, which is not respecting with the clinic stages of the diabetic retinopathy. (4) Laser photocoagulation proved more effectively in the facula of type III than in the facula of type II. We can conclude that pan retinal photocoagulation with laser is a safe and effective method to control the condition of diabetic retinopathy.