AIM: To observe the effect of external scleral ring ligation and external scleral ring ligation combined with scleral external pressure on the ocular structure and intraocular pressure of patients with rhegmatogenous retinal detachment(RRD).

METHODS:In May 2014 to May 2017, 240 patients(240 eyes)with RRD were selected as research objects, in which 100 eyes(scleral cerclage group)were treated by scleral cerclage, 140 eyes(joint group)were treated by scleral cerclage combined external sclera pressure. Preoperative and postoperative 2, 4 and 12wk, intraocular pressure, corneal thickness and corneal horizontal and vertical curvature, anterior chamber depth, lens thickness and axial length, ciliary body thickness and the trabecular iris angle degree of two groups were detected.

RESULTS: At 12wk after surgery, all the 240 eyes got anatomical reattachment. Two weeks after surgery, intraocular pressure, corneal thickness, horizontal and vertical curvature of the cornea, lens thickness and ciliary body thickness increased significantly in both groups(P<0.05), and the anterior chamber depth and the degree of angle between the trabecular and iris decreased significantly(P<0.05). The postoperative visual acuity of the two groups was significantly better compared with that before surgery(P<0.05). The visual acuity of joint group was significantly better than that of the scleral cerclage group 2wk after surgery(P<0.05).

CONCLUSION: The scleral cerclage and external sclera cerclage combined with external sclera pressure on the cornea, anterior chamber, anterior chamber depth, lens thickness and degree of angle between the trabecular and iris were significantly influence in the early days. Effect of scleral cerclage combined with external sclera compression on intraocular pressure is longer, which should be paid attention to.