Purpose
To determine the effect of short-term 4 mg/mL dexamethasone solution treatment in diabetic macular edema (DME).
Patients and methods
Twenty-seven pseudophakic diabetic patients with visual impairment caused by DME were randomized to receive 0.01 mL (40 μg), 0.03 mL (120 μg) or 0.05 mL (200 μg) intravitreal dexamethasone solution. Eyes were evaluated in terms of macular thickness, best-corrected visual acuity (BCVA) and intraocular pressure (IOP) at 3, 7 and 28 days after injection (D).
Results
There was a significant reduction in macular thickness between D0 and D3 for all groups (0.01 mL –
P
=0.008, 0.03 mL –
P
=0.038, and 0.05 mL –
P
=0.008). Between D0 and D7, a significant reduction in macular thickness was observed in 0.01 mL and 0.05 mL groups (0.01 mL –
P
=0.013 and 0.05 mL –
P
=0.021). Between D0 and D28, no significant reduction of macular thickness was observed for any group. Between D0 and D3, a significant improvement in BCVA in the 0.03 mL group (
P
=0.028) was observed. Between D0 and D7, a significant improvement in BCVA was observed in 0.01 mL and 0.03 mL groups (0.01 mL –
P
=0.018 and 0.03 mL –
P
=0.027). Between D0 and D28, a significant improvement in BCVA was observed for the 0.01 mL group (
P
=0.017). No significant differences in IOP measurements were observed for any group. Safety analysis revealed no serious ocular or systemic events.
Conclusion and relevance
Intravitreal dexamethasone solution is effective in reducing macular thickness secondary to DME in the short-term. Improvement in short-term visual acuity was observed. Although DME requires long-term treatment, it may be a low cost therapeutic option used in specific short-term situations.
Trial registration:
NCT03608839 (
http://www.clinicaltrials.gov
).
RESUMOObjetivo: Descrever a taxa de reaplicação e os resultados da acuidade visual dos pacientes com descolamento de retina regmatogênico simples que se submeteram à cirurgia de introflexão escleral segmentar. Métodos: Uma série de casos prospectivo de 100 pacientes com perda visual ou sintomas (floaters e fotopsia), com duração inferior a 30 dias, agendados para a cirurgia. Nenhum paciente apresentou uma ruptura da retina superior a 30°, um descolamento de retina maior que 2 quadrantes ou vitreorretinopatia. Resultados: As taxas de sucesso anatômico em 1 semana, 1 mês e 6 meses foram de 93%, 100% e 100%, respectivamente. Sete pacientes foram submetidos à cirurgia de descolamento de retina adicional (vitrectomia via pars plana) após falha primária em uma semana de seguimento. A melhor acuidade visual pré-operatória, 1 mês, e de 6 meses pós-operatório foram 20/100, 20/80 e 20/50, respectivamente. As complicações pós-operatórias foram: edema palpebral em 10% dos pacientes, a hipertensão ocular transitória em 5%, pucker macular em 3%, diplopia transiente em 3%, e hifema (<0,5 mm) em 1%. Conclusão: Em pacientes com descolamento da retina sem complicações, a cirurgia de introflexão segmentar escleral mostrou um sucesso anatômico e funcional muito bom, com um número menor de complicações maiores. Descritores: Recurvamento da esclera; Descolamento de retina; Crioterapia; Vitreorretinopatia proliferativaRev Bras Oftalmol. 2012; 71 (6): 377-9The authors declare no conflicts of interest Recebido para publicação em: 22/9/2011 -Aceito para publicação em: 2/3/2012 378 Rev Bras Oftalmol. 2012; 71 (6): 377-9
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.