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Current status of late and recurrent intraocular lens dislocation: analysis of real-world data in Japan.
Japanese Journal of Ophthalmology 2018 November 14
PURPOSE: To describe relevant patient demographic characteristics and investigate the influence of known risk factors for late intraocular lens (IOL) dislocation. To explore the associations between these risk factors and the incidence of recurrent IOL dislocation.
STUDY DESIGN: Retrospective cohort study.
METHODS: This study was performed using Nationwide Diagnostic Procedure Combination data in Japan from April 1, 2008 through July 31, 2016. Descriptive statistics for late and recurrent IOL dislocation, incidence rates, and risk factors for recurrent IOL dislocation were analyzed using a Cox proportional hazard model.
RESULTS: We identified 678 patients with late IOL dislocation. Most were men (72%, 488/678), and the men were younger than their women counterparts (mean age 65.2 years vs. 74.5 years). The incidence rate of recurrent IOL dislocation was 5.1 per 100 person-years. All 20 cases of recurrent IOL dislocation were observed within the year following surgery. There were no significant associations between potential risk factors and recurrent IOL dislocation (adjusted hazard ratio [HR] 1.53, 95% confidence interval [CI] 0.55-4.26 for diabetes mellitus; adjusted HR 0.77, 95%CI 0.09-6.40 for atopic dermatitis); no recurrences occurred in patients with pseudoexfoliation syndrome, retinitis pigmentosa, or connective tissue disease.
CONCLUSIONS: Late IOL dislocation occurs more frequently in men. We found that recurrent IOL dislocation was rare during long-term follow-up and there were no significant associations between the potential risk factors and recurrent IOL dislocation. Further studies are needed to clarify the sex-related differences involved in IOL dislocation.
STUDY DESIGN: Retrospective cohort study.
METHODS: This study was performed using Nationwide Diagnostic Procedure Combination data in Japan from April 1, 2008 through July 31, 2016. Descriptive statistics for late and recurrent IOL dislocation, incidence rates, and risk factors for recurrent IOL dislocation were analyzed using a Cox proportional hazard model.
RESULTS: We identified 678 patients with late IOL dislocation. Most were men (72%, 488/678), and the men were younger than their women counterparts (mean age 65.2 years vs. 74.5 years). The incidence rate of recurrent IOL dislocation was 5.1 per 100 person-years. All 20 cases of recurrent IOL dislocation were observed within the year following surgery. There were no significant associations between potential risk factors and recurrent IOL dislocation (adjusted hazard ratio [HR] 1.53, 95% confidence interval [CI] 0.55-4.26 for diabetes mellitus; adjusted HR 0.77, 95%CI 0.09-6.40 for atopic dermatitis); no recurrences occurred in patients with pseudoexfoliation syndrome, retinitis pigmentosa, or connective tissue disease.
CONCLUSIONS: Late IOL dislocation occurs more frequently in men. We found that recurrent IOL dislocation was rare during long-term follow-up and there were no significant associations between the potential risk factors and recurrent IOL dislocation. Further studies are needed to clarify the sex-related differences involved in IOL dislocation.
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