Clinical investigation and analysis of elevated intraocular pressure within 24 hours after small incision phacoemulsification of cataract

Objective To investigate and analyse the changes of intraocular pressure(IOP)within 24 hours after small incision phacoemulsification of cataract.Methods 125 patients(140 eyes)received small incision phacoemulsification with foldable intraocular lens implantation.Intraocular pressure were measured preoperatively and 4~8h,24h postoperatively.Results The peak of IOP is at 4~8 hours after surgery.The incidence of increased IOP is 32.14%,And IOL spikes of 24 mm Hg or more was 10.71%,the maximum IOL can reach 40 mm Hg,The intraocular pressure gradually decreased after 24 h.Conclusion Statistics show that the postoperative intraocular pressure changes associated with the application of viscoelastic agents,nuclear hardness and the ultrasonic energy and other factors.Sufficient attention of early postoperative intraocular pressure should be paid after phacoemulsification of cataract,especially at 4~8 hours postoperatively.It is imperative to select high quality viscoelastic materials or reasonable use and to observe closely the change of IOP in the early stage.