Abstract:

Objective To evaluate the eyeball structure changes and the influence of intraocular pressure (IOP) after two types of external-route microsurgery (the local buckling and the local buckling received encircling) in patients with rhegmatogenous retinal detachment(RD). Design Retrospective case series. Participants 64 patients (64 eyes) with rhegmatogenous RD were treated with the local buckling (25 eyes) or the local buckling and encircling (39 eyes). Methods Biological data were measured with A-scan and ultrasound biomicroscopy (UBM) and IOP were measured with non-contact tonometry at preoperation, and postoperative1 week, 1 month and 3 months. Main Outcome Measures Intraocular pressure, corneal thickness, corneal curvature, central anterior chamber depth, thickness of lens, ciliary thickness and trabecular-iris angle. Results After 3 months of external-route microsurgery, the retina was anatomically reattached in all 64 patients. Compared with preoperative data, IOP, corneal thickness, corneal horizontal curvature, corneal vertical curvature, thickness of lens and ciliary thickness were significantly increased at 1 week after surgery (all P<0.05). The difference of IOP was no statistically significant at 1 month and 3 months after the operation in the local buckling group. On the contrary, it has significantly meaningful changes at 3 months (15.41±2.58 mmHg) to compared with that (13.66±3.16 mmHg) before surgery in the local buckling group (P=0.009). At 1 week after surgery, the corneal vertical curvatures of these two groups were (45.03±1.08) D and (44.47±0.90) D (P=0.027). Conclusions The local buckling and the local buckling combined encircling for rhegmatogenous retinal detachment can early influence eyeball structure significantly, including cornea, anterior chamber and anterior chamber angle. Intraocular pressure is affected for longer duration and should be given attention and intervention. (Ophthalmol CHN, 2017, 26: 30-34)

Key words: rhegmatogenous retinal detachment, external-route microsurgery, intraocular pressure, complications