Asimina Mataftsi1, Anna-Bettina Haidich2, Stamatia Kokkali2, Peter K Rabiah3, Eileen Birch4, David R Stager5, Richard Cheong-Leen6, Vineet Singh7, James E Egbert8, William F Astle9, Scott R Lambert10, Purohit Amitabh10, Arif O Khan11, John Grigg12, Malamatenia Arvanitidou2, Stavros A Dimitrakos1, Ken K Nischal13. 1. Second Department of Ophthalmology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece. 2. Department of Hygiene and Epidemiology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece. 3. Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia4Department of Surgery, North Shore University Health System, Evanston, Illinois5Department of Surgery, University of Chicago Pritzker School of Medicine, Chicag. 4. Crystal Charity Ball Pediatric Vision Evaluation Center, Retina Foundation of the Southwest, Dallas, Texas. 5. Pediatric Ophthalmology and Adult Strabismus, Plano, Texas. 6. Clinical and Academic Department of Ophthalmology, Great Ormond Street Hospital, London, England9Western Eye Hospital, London, England. 7. Clinical and Academic Department of Ophthalmology, Great Ormond Street Hospital, London, England. 8. Division of Ophthalmology, Department of Surgery, Santa Clara Valley Medical Center, San Jose, California. 9. Vision Clinic, Alberta Children's Hospital, Department of Surgery, University of Calgary, Calgary, Alberta, Canada. 10. Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia. 11. Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia. 12. Save Sight Institute, Discipline of Ophthalmology, Sydney Eye Hospital Campus, Sydney Medical School, University of Sydney, Sydney, Australia. 13. Clinical and Academic Department of Ophthalmology, Great Ormond Street Hospital, London, England14UPMC Eye Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania.
Abstract
IMPORTANCE: Infantile cataract surgery bears a significant risk for postoperative glaucoma, and no consensus exists on factors that may reduce this risk. OBJECTIVE: To assess the effect of primary intraocular lens implantation and timing of surgery on the incidence of postoperative glaucoma. DATA SOURCES: We searched multiple databases to July 14, 2013, to identify studies with eligible patients, including PubMed, MEDLINE, EMBASE, ISI Web of Science, Scopus, Central, Google Scholar, Intute, and Tripdata. We also searched abstracts of ophthalmology society meetings. STUDY SELECTION: We included studies reporting on postoperative glaucoma in infants undergoing cataract surgery with regular follow-up for at least 1 year. Infants with concurrent ocular anomalies were excluded. DATA EXTRACTION AND SYNTHESIS: Authors of eligible studies were invited to contribute individual patient data on infants who met the inclusion criteria. We also performed an aggregate data meta-analysis of published studies that did not contribute to the individual patient data. Data were pooled using a random-effects model. MAIN OUTCOMES AND MEASURES: Time to glaucoma with the effect of primary implantation, additional postoperative intraocular procedures, and age at surgery. RESULTS: Seven centers contributed individual patient data on 470 infants with a median age at surgery of 3.0 months and median follow-up of 6.0 years. Eighty patients (17.0%) developed glaucoma at a median follow-up of 4.3 years. Only 2 of these patients had a pseudophakic eye. The risk for postoperative glaucoma appeared to be lower after primary implantation (hazard ratio [HR], 0.10 [95% CI, 0.01-0.70]; P = .02; I(2) = 34%), higher after surgery at 4 weeks or younger (HR, 2.10 [95% CI, 1.14-3.84]; P = .02; I(2) = 0%), and higher after additional procedures (HR, 2.52 [95% CI, 1.11-5.72]; P = .03; I(2) = 32%). In multivariable analysis, additional procedures independently increased the risk for glaucoma (HR, 2.25 [95% CI, 1.20-4.21]; P = .01), and primary implantation independently reduced it (HR, 0.10 [95% CI, 0.01-0.76]; P = .03). Results were similar in the aggregate data meta-analysis that included data from 10 published articles. CONCLUSIONS AND RELEVANCE: Although confounding factors such as size of the eye and surgeon experience are not accounted for in this meta-analysis, the risk for postoperative glaucoma after infantile cataract surgery appears to be influenced by the timing of surgery, primary implantation, and additional intraocular surgery.
IMPORTANCE: Infantile cataract surgery bears a significant risk for postoperative glaucoma, and no consensus exists on factors that may reduce this risk. OBJECTIVE: To assess the effect of primary intraocular lens implantation and timing of surgery on the incidence of postoperative glaucoma. DATA SOURCES: We searched multiple databases to July 14, 2013, to identify studies with eligible patients, including PubMed, MEDLINE, EMBASE, ISI Web of Science, Scopus, Central, Google Scholar, Intute, and Tripdata. We also searched abstracts of ophthalmology society meetings. STUDY SELECTION: We included studies reporting on postoperative glaucoma in infants undergoing cataract surgery with regular follow-up for at least 1 year. Infants with concurrent ocular anomalies were excluded. DATA EXTRACTION AND SYNTHESIS: Authors of eligible studies were invited to contribute individual patient data on infants who met the inclusion criteria. We also performed an aggregate data meta-analysis of published studies that did not contribute to the individual patient data. Data were pooled using a random-effects model. MAIN OUTCOMES AND MEASURES: Time to glaucoma with the effect of primary implantation, additional postoperative intraocular procedures, and age at surgery. RESULTS: Seven centers contributed individual patient data on 470 infants with a median age at surgery of 3.0 months and median follow-up of 6.0 years. Eighty patients (17.0%) developed glaucoma at a median follow-up of 4.3 years. Only 2 of these patients had a pseudophakic eye. The risk for postoperative glaucoma appeared to be lower after primary implantation (hazard ratio [HR], 0.10 [95% CI, 0.01-0.70]; P = .02; I(2) = 34%), higher after surgery at 4 weeks or younger (HR, 2.10 [95% CI, 1.14-3.84]; P = .02; I(2) = 0%), and higher after additional procedures (HR, 2.52 [95% CI, 1.11-5.72]; P = .03; I(2) = 32%). In multivariable analysis, additional procedures independently increased the risk for glaucoma (HR, 2.25 [95% CI, 1.20-4.21]; P = .01), and primary implantation independently reduced it (HR, 0.10 [95% CI, 0.01-0.76]; P = .03). Results were similar in the aggregate data meta-analysis that included data from 10 published articles. CONCLUSIONS AND RELEVANCE: Although confounding factors such as size of the eye and surgeon experience are not accounted for in this meta-analysis, the risk for postoperative glaucoma after infantile cataract surgery appears to be influenced by the timing of surgery, primary implantation, and additional intraocular surgery.
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