Investigation of the Cause of Low Vision after Cataract Extraction and Intraocu-lar Lens Implantation

Objective To explore the major cause and management of low vision after cataract extraction and intraocular lensimplantation.Methods 487eyes of cataract extraction and intraocular lens implantation from January 2000 to May 2004 wereanalyzed retrospectively,which were divided into 5 groups:188eyes of traumatic cataract,89eyes of cataract and glaucoma, 122eyes of cataract and diabetes mellitus,27eyes of cataract and uveitis,61eyes of cataract and high myopia.100eyes of single age- related cataract were selected as controls.After 3 months of operation,major complications and the incidence rate of low visionwere analyzed.Results The visual acuity that was0.3 after 3 months of operation were 26.07%,29.21%,25.41%,30.04%,18.51%and8% in 6 groups respectively.There was significant difference between the 5study groups and the control group (P0.01).Conclusion The eye disease before operation and the systematic disease involving the eye were major factorsof low vision.Enough preparation before operation,Skillful surgical technique and proper management after operationo peration may decrease the occurrence of low vision.