AIM: To evaluate the clinical effect of photocoagulation with 532nm frequency-doubled laser in patients with retinal hole.<p>METHODS: Seventy-two cases(78 eyes)with retinal holes were treated with 532nm frequency-doubled laser. All the eyes were divided according to the quadrants of location of retinal holes and the size of retinal hole and existence of local retinal detachment accompanying retinal holes. Statistical analysis was made on these data.<p>RESULTS: 1)The retinal holes were located in the upper quadrants of retina in 44 eyes and there were also retinal holes located in the lower quadrants of retina in 31 eyes(there were 3 eyes with retinal holes both located in the upper and lower quadrants of retina, which were not included in control group). The difference of photocoagulation effect between the two groups was statistically significant. 2)The retinal holes diameter ≤2 papilla diameter(PD)were present in 37 eyes, the holes diameter of retina >2PD were seen in 41 eyes, the difference of photocoagulation effect between the two groups was statistically significant. 3)Retinal holes without local retinal detachment were observed in 45 eyes, retinal holes with local retinal detachment were seen in 33 eyes, the difference of photocoagulation effect between the two groups was statistically significant.<p>CONCLUSION:Photocoagulation with 532nm frequency-doubled laser is effective and safe to treat retinal holes. The effect is better in patients with retinal holes in the upper quadrants and with the retinal holes diameter ≤2PD and without local retinal detachment
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