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Multicenter Study
. 2013 Jul;131(7):870-9.
doi: 10.1001/jamaophthalmol.2013.2313.

Macular edema after cataract surgery in eyes without preoperative central-involved diabetic macular edema

Diabetic Retinopathy Clinical Research Network Authors/Writing Committee  1 ; Carl W Baker, Talat Almukhtar, Neil M Bressler, Adam R Glassman, Sandeep Grover, Stephen J Kim, Timothy J Murtha, Michael E Rauser, Cynthia Stockdale
Collaborators, Affiliations
Multicenter Study

Macular edema after cataract surgery in eyes without preoperative central-involved diabetic macular edema

Diabetic Retinopathy Clinical Research Network Authors/Writing Committee et al. JAMA Ophthalmol. 2013 Jul.

Abstract

Importance: The incidence of development or worsening of macular edema (ME) is variable in eyes without diabetic ME (DME) undergoing cataract surgery.

Objective: To estimate the incidence of central-involved ME 16 weeks following cataract surgery in eyes with diabetic retinopathy without definite central-involved DME preoperatively.

Design, setting, and participants: In a multicenter, prospective, observational study, 293 participants with diabetic retinopathy without definite central subfield thickening on optical coherence tomography (OCT) underwent cataract surgery.

Exposure: Cataract extraction surgery performed within 28 days of enrollment of eyes without DME in individuals with diabetes mellitus.

Main outcomes and measures: Development of central-involved ME defined as the following: (1) OCT central subfield thickness of 250 μm or greater (time-domain OCT) or 310 μm or greater (spectral-domain OCT) with at least a 1-step increase in logOCT central subfield thickness preoperatively to the 16-week visit; (2) at least a 2-step increase in logOCT central subfield thickness preoperatively to the 16-week visit; or (3) nontopical treatment for ME received before the 16-week visit with either of the OCT criteria met at the time of treatment.

Results: The median participant age was 65 years. The median visual acuity letter score was 69 letters (Snellen equivalent 20/40). Forty-four percent of eyes had a history of treatment for DME. Sixteen weeks postoperatively, central-involved ME was noted in 0% (95% CI, 0%-20%) of 17 eyes with no preoperative DME. Of eyes with non-central-involved DME, 10% (95% CI, 5%-18%) of 97 eyes without central-involved DME and 12% (95% CI, 7%-19%) of 147 eyes with possible central-involved DME at baseline progressed to central-involved ME. History of DME treatment was significantly associated with central-involved ME development (P < .001).

Conclusions and relevance: In eyes with diabetic retinopathy without concurrent central-involved DME, presence of non-central-involved DME immediately prior to cataract surgery or history of DME treatment may increase the risk of developing central-involved ME 16 weeks after cataract extraction.

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References

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