ABSTRACT
We assessed 14 eyes of 14 patients with persisting hypotony due to cyclodialysis by blunt trauma of after secondary intraocular lens implantation. All the 14 eyes showed persistent hypotony and no increment of intraocular pressure(IOP) nor the visual acuity during the follow up period of average 4.6 months before treatment, We treated these eyes with argon laser photocoagulation and/or direct cyclopexy. After treatment, the IOP changed from 3.7+/-1.5mmHg to 13.7+/-5.1mmHg, and posttreatment IOP was greater than 8mmHg in 12 eyes. All 14 eyes showed visual acuity under 0.3 before the treatment and after treatment, the visual acuity improved by 4.2+/-3.3 lines at the last follow up visit. The follow up period was 12.5 months on average. Before treatment, all the 12 eyes that had no medial opacity showed hypotony maculopathy, but after treatment only 4 eyes showed persisting hypotony maculopathy. A-scan axial length measurement was performed on 8 eyes before and after treatment, and the axial lengths were increased by 0.90+/-0.88mm after treatment in 7 eyes in which IOP were increased. The change in refractive errors before and after treatment was possible to be assessed in 9 eyes and among them, 7 eyes showed increment of IOP. Among those 7 eyes, 2 eyes had shallow chambers with anteriorly displaced lens before treatment and showed repositioning of lenses and hyperopic shift by +2.86 Dsph on average after treatment, but the remaining 4 eyes excluding one eye that received lensectomy at the time of surgery for taumatic cataract, showed myopic shift by -2.31 Dsph on average after treatment.
Subject(s)
Humans , Argon , Cataract , Follow-Up Studies , Lens Implantation, Intraocular , Light Coagulation , Refractive Errors , Visual AcuityABSTRACT
We compared Healon which is widely used as a viscoelastic with Hyal 2000, recently produced in Korea. We evaluated anterior chamber reaction, intraocular pressure, and specular microscopy after injection of 0.2ml Healon and Hyal 2000, respectively, into anterior chamber of 20 cats, and performed light microscopy and scanning electron microscopy 8 weeks later. We calculated the corneal swelling rate after 0.2ml Healon and Hyal 2000 were coated on the corneal endothelium of 10 rabbits and GBR solution with 0.5mM H2O2 was perfused. Anterior chamber reaction disappeared after 2 days of injections, and intraocular pressure(IOP) increased after 6 hours of infection but normalized after 24 hours in both 2 groups. Corneal endothelial cell count was 4956cells/mm2 in the Healon group and 5021cell.mm2 in the Hyal 2000 group on the first post-injection day. and 4827cells/mm2 and 4810cell/mm2, 1 week later, without a statistical difference. The histologic abnormality was not detectable in light microscopy or scanning electron microscopy in both groups. The corneal swelling rate with Healon was 15.85micrometer/hr and 12.72micrometer/hr with Hyal 2000, while it increased to 69.29micrometer/hr and 67.51micrometer/hr in controls(p<0.05), respectively. The clinical findings showed no difference and histologic findings appeared normal in both the Healon and the Hyal 2000 groups. The inhibitory effect on the corneal swelling was similar during in vitro perfusion in both groups.