Primary clinical observation of pneumatic trabeculoplasty for primary open-angle glaucoma
Objective To observe the clinical efficacy of pneumatic trabeculoplasty(PNT) for primary open-angle glaucoma(POAG).Methods From January 2011 to November 2011,a total of 20 eyes(14 patients) with POAG were enrolled.All 20 eyes received PNT.The visual acuity before and after PNT was recorded,and the intraocular pressure(IOP) at 1 hour before PNT,1 hour,1 day,7 days,14 days,30 days,45 days,60 days,90 days and 120 days after PNT were also recorded.The number of patients whose IOP was control and obviously decreased at 1 month,2 months,3 months and 4 months were investigated.The follow-up time was 4 months,the thickness of retinal never fiber layer was compared before PNT and 4 months after PNT.Results The visual acuity before and after PNT were 0.76±0.23 and 0.73±0.21,there was no statistical difference(P=0.26).IOP at each time point after PNT were lower than that before PNT,there were statistical differences(all P0.05).IOP at 1 month,2 months,3 months and 4 months after PNT were controlled in 13 eyes(65%),12 eyes(60%),11 eyes(55%) and 5 eyes(25%),obviously decreased in 17 eyes(85%),15 eyes(75%),15 eyes(75%) and 11 eyes(55%).Patients were less dependent on IOP drugs after PNT.There was no statistical difference in thickness of retinal nerve fiber layer at each quadrant before and after PNT(both P0.05).Conclusion PNT for primary open-angle glaucoma is safe and effective.