Michele De Maria1,2, Marco Coassin3, Valentina Mastrofilippo4, Luca Cimino5, Danilo Iannetta1, Luigi Fontana6. 1. Ophthalmology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy. 2. Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy. 3. Ophthalmology, University Campus Bio-Medico, Rome, Italy. 4. Clinical Trials and Statistics Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy. 5. Ocular Immunology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy. 6. Ophthalmology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy. luifonta@gmail.com.
Abstract
PURPOSE: To evaluate, by laser photometry, the persistency of anterior chamber flare after uneventful phacoemulsification in asymptomatic patients with no signs of inflammation on slit lamp examination. METHOD: Seventy-five patients previously enrolled in a randomized clinical trial that evaluated inflammation after uneventful phacoemulsification in eyes treated with dexamethasone 0.1% ophthalmic suspension (group 1) or bromfenac 0.09% ophthalmic solution (group 2) for 2 weeks. Anterior chamber inflammation was investigated by laser flare photometry. At 30 days after surgery, laser flare showed persistently elevated values. For this reason, patients were further analyzed at 3 and 6 months. Additionally, optical coherence tomography was used to measure the central macular thickness (CMT) and to assess for postoperative pseudophakic macular edema. RESULTS: When compared to preoperative values, laser flare photometry demonstrated persistent ocular inflammation at postoperative days 90 and 180 in group 1, but not in group 2. Laser flare values showed a significant reduction in group 2 compared to group 1 throughout all the follow-up (p < 0.001). The increase in mean CMT at days 90 and 180 with respect to baseline was statistically significant in group 1 but not in group 2, in which it decreased to levels similar to preoperative value. Group 1 showed a higher increase in mean CMT compared to group 2 throughout all the follow-up (p < 0.001). The proportion of patients that developed pseudophakic cystoid macular edema (CME) was 14% (n = 5) and 0% (n = 0) in group 1 and group 2, respectively (p = 0.02). The bivariate analysis demonstrated a positive correlation between laser flare and CMT values in group 1 but not in group 2. CONCLUSION:Anterior chamber inflammation persists for more than 30 days in a significant proportion of patients after uncomplicated cataract surgery and may be responsible for late onset of cystoid macular edema cases. TRIAL REGISTRATION: ClinicalTrials.gov identifier, NCT03317847.
RCT Entities:
PURPOSE: To evaluate, by laser photometry, the persistency of anterior chamber flare after uneventful phacoemulsification in asymptomatic patients with no signs of inflammation on slit lamp examination. METHOD: Seventy-five patients previously enrolled in a randomized clinical trial that evaluated inflammation after uneventful phacoemulsification in eyes treated with dexamethasone 0.1% ophthalmic suspension (group 1) or bromfenac 0.09% ophthalmic solution (group 2) for 2 weeks. Anterior chamber inflammation was investigated by laser flare photometry. At 30 days after surgery, laser flare showed persistently elevated values. For this reason, patients were further analyzed at 3 and 6 months. Additionally, optical coherence tomography was used to measure the central macular thickness (CMT) and to assess for postoperative pseudophakic macular edema. RESULTS: When compared to preoperative values, laser flare photometry demonstrated persistent ocular inflammation at postoperative days 90 and 180 in group 1, but not in group 2. Laser flare values showed a significant reduction in group 2 compared to group 1 throughout all the follow-up (p < 0.001). The increase in mean CMT at days 90 and 180 with respect to baseline was statistically significant in group 1 but not in group 2, in which it decreased to levels similar to preoperative value. Group 1 showed a higher increase in mean CMT compared to group 2 throughout all the follow-up (p < 0.001). The proportion of patients that developed pseudophakic cystoid macular edema (CME) was 14% (n = 5) and 0% (n = 0) in group 1 and group 2, respectively (p = 0.02). The bivariate analysis demonstrated a positive correlation between laser flare and CMT values in group 1 but not in group 2. CONCLUSION: Anterior chamber inflammation persists for more than 30 days in a significant proportion of patients after uncomplicated cataract surgery and may be responsible for late onset of cystoid macular edema cases. TRIAL REGISTRATION: ClinicalTrials.gov identifier, NCT03317847.
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