ESASO classification relevance in the diagnosis and evolution in diabetic macular edema patients after dexamethasone implant treatment.

PURPOSE: To assess the clinical relevance of The European School for Advanced Studies in Ophthalmology (ESASO) classification in patients with diabetic macular edema (DME) after their first dexamethasone implant (DEXI) treatment. METHODS: Retrospective real-world study conducted on consecutive DME patients who underwent DEXI treatment and were controlled at month-2. Subjects were initially classified according to the ESASO classification stages. The outcomes were anatomical biomarkers with spectral-domain optical coherence tomography (SD-OCT) and best-corrected visual acuity (BCVA). RESULTS: A total of 128 patients were classified according to ESASO classification stages as early (7; 5.5%), advanced (100; 78.1%), and severe (21; 16.4%). At baseline, there were significant differences between stages in BCVA, central macular thickness (CMT), and tomography anatomical biomarkers (p < 0.05). Initial BCVA (logMAR) was 0.33 ± 0.10, 0.58 ± 0.34, and 0.71 ± 0.35 in the early, advanced, and severe stages, respectively (p < 0.05). At month-2, BCVA was 0.17 ± 0.15, 0.46 ± 0.29, and 0.69 ± 0.27 in those classified as early, advanced, and severe stages, respectively. At month-2, DME was resolved or improved in 6 (85.7%), 60 (60%), and 12 (60%) patients classified as early, advanced, and severe stages, respectively. CONCLUSIONS: There was a good correlation between BCVA and ESASO classification stages. Patients in the severe stage did not achieve visual acuity improvement over the study period.

Influence of prior treatment protocol on intravitreal dexamethasone implant behavior in patients with diabetic macular edema in real-world practice.

BACKGROUND AND OBJECTIVE: Intravitreal dexamethasone implant (DEXI) has been placed as an effective option to treat diabetic macular edema (DME). However, there is no consensus on the best time to introduce it. We conducted a study to evaluate anatomical and functional behavior after the first DEXI according to previous treatment. RESEARCH DESIGN AND METHODS: This retrospective, real-world study between 2013 and 2020 investigated changes in best-corrected visual acuity (BCVA) and central macular thickness (CMT at months 2 and 6 after the first DEXI in DME. Patients were divided into naive, early switch (≤3 anti-VEGF injections), or late switch (>3 anti-VEGF injections) groups. RESULTS: Among 112 consecutive eyes, mean BCVA and CMT improved significantly in all groups at month 2, with no difference between them. However, this improvement was not maintained at 6 months. The Naíve group presented better BCVA all over the study period. The previously treated groups, which started with worse initial visual acuity, showed more visual gain without reaching the BCVA of the naive group. CMT performance was similar between groups. CONCLUSIONS: There was similar anatomical and functional behavior in all groups. Poorer visual acuity at baseline was associated with worse functional outcome despite good anatomic response.

Dexamethasone intravitreal implant in the treatment of macular edema secondary to necrotizing retinitis.

PURPOSE: To describe our experience with the use of a sustained-release dexamethasone implant in three patients with recalcitrant macular edema that developed after necrotizing retinitis in the context of the previously treated virus. CASE DESCRIPTION: Two immunocompetent patients presented with unilateral acute retinal necrosis (ARN) due to Varicella-Zoster (VZV). The other, an immunocompromised patient, presented with unilateral cytomegalovirus (CMV) necrotizing retinitis. The diagnoses were confirmed by anterior chamber polymerase chain reaction (PCR) and all were treated with oral valganciclovir and intravitreal ganciclovir (2 mg/0.1 ml). Infection was controlled but two of them required pars plana vitrectomy. Between 2 and 4 months after the resolution of signs of infection, resistant macular edema (RME) developed, and an intravitreal dexamethasone device was implanted after anterior chamber PCR had been negative. Functional and anatomical improvement was achieved, with the resolution of the edema accompanied by improvement in visual acuity in all patients. There was no evidence of reactivation at two years. No cataract or ocular hypertension was observed. One patient required two additional dexamethasone implants. CONCLUSION: Dexamethasone intravitreal implant could be considered as an option for the treatment of macular edema developed after ARN. Care should be taken to avoid reactivation and patients need to be properly informed.

Autologous Pericranium Graft for Necrotizing Scleritis.

PURPOSE: The purpose of this study was to describe the clinical outcome of scleral staphyloma secondary to necrotizing scleritis treated with autologous pericranial grafting. CASE REPORT: A 63-year-old woman with necrotizing scleritis and choroidal protrusion underwent homologous scleral grafting, which failed. The patient's medical management was optimized for control of her systemic inflammation, and she underwent a second surgery consisting of autologous pericranium grafted to the parietal region. A 3- × 2-cm tissue patch was harvested and sutured over the staphyloma borders with 8/0 polyglactin sutures. Complete re-epithelialization was observed at 3 weeks, the graft was well integrated, and no signs of inflammation were observed at 18 months. CONCLUSIONS: The pericranium offers a viable alternative for scleral thinning because of necrotizing scleritis.