Intravitreal dexamethasone implant one month before versus concomitant with cataract surgery in patients with diabetic macular oedema: the dexcat study.

Abstract

PURPOSE:

To report clinical outcomes of two different timings of intravitreal dexamethasone (DEX) implant administration for prevention of diabetic macular oedema (DME) worsening following cataract surgery.

METHODS:

This multicentre, retrospective study included patients with DME who received an intravitreal DEX implant 1 month before cataract surgery, 'precataract DEX' group, or at the time of cataract surgery, 'concomitant treatments' group. Inclusion criteria were a follow-up ≥3 months and ophthalmological examination with optical coherence tomography (OCT) imaging at baseline (cataract surgery) and throughout follow-up. Anatomical improvement was considered to be a decrease in OCT central subfield (CSF) thickness ≥20% compared to baseline. The primary outcomes were anatomical and functional results at 3 months.

RESULTS:

Two hundred twenty-one patients were included: 136 in the 'precataract DEX' group and 85 in the 'concomitant treatments' group. At 3 months, a reduction of CSF thickness ≥ 20% was found in 7.3% of eyes in the 'precataract DEX group' and in 83.7% of eyes in the 'concomitant treatments' group (p < 0.001), with mean CSF thickness lower in the latter group (371 ± 52 µm versus 325 ± 57 µm, p < 0.001). At 3 months, mean best-corrected visual acuity had improved from baseline in both groups (p < 0.001), with no difference between groups (p = 0. 20). No serious systemic adverse events were reported.

CONCLUSION:

Both approaches prevented a worsening of DME, showing a comparable visual outcome. Dexamethasone (DEX) implant given at the same time as cataract surgery provided a better anatomical outcome.

• Authors: Matteo Fallico, Teresio Avitabile, Niccolò Castellino, Antonio Longo, Andrea Russo, Vincenza Bonfiglio, Francesca Parisi, Claudio Furino, Giacomo Panozzo, Vincenzo Scorcia, Adriano Carnevali, Francesco Bandello, Maurizio Battaglia Parodi, Gilda Cennamo, Salvatore Cillino, Maria Vadalà, Valentina Sunseri Trapani, Carlo Cagini, Tito Fiore, Marco Lupidi, Mariacristina Parravano, Monica Varano, Paola Giorno, Francesco Boscia, Ermete Giancipoli, Chiara Eandi, Yannick Le Mer, Michele Reibaldi
• Journal: Acta ophthalmologica (Acta Ophthalmol) Vol. 99 Issue 1 Pg. e74-e80 (Feb 2021) ISSN: 1755-3768 [Electronic] England
• PMID: 32588978 (Publication Type: Journal Article, Multicenter Study)
• Copyright: © 2020 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

Chemical References

• Drug Implants
• Glucocorticoids
• Dexamethasone

Topics

• Aged
• Cataract (complications)
• Cataract Extraction
• Dexamethasone (administration & dosage)
• Diabetic Retinopathy (complications, diagnosis, drug therapy)
• Drug Implants
• Female
• Follow-Up Studies
• Glucocorticoids (administration & dosage)
• Humans
• Intravitreal Injections
• Macular Edema (complications, diagnosis, drug therapy)
• Male
• Retrospective Studies
• Time Factors
• Tomography, Optical Coherence
• Treatment Outcome
• Visual Acuity