Résumé
Purpose : To examine the differences in the peripapillary vascular parameters and foveal?avascular?zone (FAZ) vascularity parameters between primary open?angle?glaucoma (POAG) patients versus exfoliation?glaucoma (XFG) patients versus healthy subjects. Methods: This is cross?sectional study and a comparative clinical study. POAG and XFG patients and healthy subjects underwent a comprehensive ophthalmic examination, including visual field optical coherence tomography (OCT) and OCT angiography (OCTA) of the optic disc and FAZ. Differences in peripapillary vessel density (VD), perfusion density (PD), and FAZ area and circularity were examined between all groups, as well as correlations between clinical parameters and vascularity parameters for each glaucoma group. Results: A total of 109 subjects (one eye for each patient) were analyzed, including 45 with POAG, 30 with XFG, and 34 controls. The average peripapillary VDs were the lowest among the XFG patients and the highest among the controls (P < 0.05, ANOVA). The average peripapillary PD of the central ring was the lowest in the XFG group and the highest in the control group (P = 0.02, ANOVA). A significant negative correlation was found between the average peripapillary VDs and PDs of the inner ring and full ring and disease severity of the POAG patients. There was a significant positive correlation between the average peripapillary PDs of the central rings and full ring and the central macular thickness of the XFG patients (P < 0.01 and P < 0.04, respectively, Pearson correlation). Conclusion: The peripapillary vascular parameters of the POAG and XFG patients were lower compared to those of normal participants. A correlation between clinical characteristics of POAG and XFG patients and PD was found. This may hint to a vascular mechanism in glaucoma either primary or secondary to intra?ocular pressure/OAG damage.
Résumé
PURPOSE: To describe the clinical characteristics, management and treatment outcomes of patients with post-surgical suprachoroidal hemorrhage (SCH). METHODS: A retrospective cross-sectional study was conducted, in which the medical records of 9 consecutive patients with SCH admitted to the Goldschleger Eye Institute were reviewed. RESULTS: The mean age was 74 years (range 61-84) and the mean follow-up time was 38.3 ± 0.1 months (range 4-87 months). Four cases were associated with glaucoma surgeries (2 trabeculectomies and 2 Ahmed valve implantations), 3 cases with cataract surgery and 2 cases with pars plana vitrectomy. The diagnosis of SCH was ranging from intra-operative to 8 days following the primary procedure. Most patients underwent posterior sclerotomies and drainage alone or combined with pars plana vitrectomy in a mean timing of intervention of 11 ± 4 days. At one month of follow-up the visual acuity improved in 7 eyes and remained stable in 2, compared to the VA prior to the drainage operation. The mean VA improved from 2.03 to 1.285 logMAR units at 1 month following the drainage procedure (p=0.003). CONCLUSIONS: SCH still remains a challenging complication of many ophthalmological procedures. The current surgical management may improve visual acuity though the general prognosis is still poor.
OBJETIVOS: Descrever as características clínicas, manejo e desfechos do tratamento de pacientes com hemorragia supracoroidea pós-operatória. MÉTODOS: Um estudo transversal foi realizado. Neste foram revisados os prontuários médicos de nove pacientes consecutivos com hemorragia supracoroidea que foram admitidos para internação no Serviço de Oftalmologia do Goldschleger Eye Institute. RESULTADOS: A média de idade foi 74 anos (61-84) e o tempo médio de seguimento foi 38,3 ± 0,1 meses (4-87 meses). Quatro casos foram associados com cirurgias de glaucoma (2 trabeculectomias e 2 implantes de válvula de Ahmed), 3 casos com cirurgia de catarata e 2 casos com vitrectomia. O diagnóstico de hemorragia supracoroidea foi de intraoperatório até 8 dias após o procedimento primário. A maioria dos pacientes se submeteu a esclerectomia posterior e drenagem com ou sem vitrectomia via pars plana combinada. A média do tempo de intervenção foi 11 ± 4 dias. Após um mês de seguimento a acuidade visual melhorou em 7 olhos e se manteve estável em 2, comparando com a acuidade visual prévia a cirurgia de drenagem. A acuidade visual media melhorou de 2,03 para 1,285 logMAR após 1 mês de seguimento depois da drenagem por esclerectomia posterior (p=0,003). CONCLUSÕES: Hemorragia supracoroidea ainda é uma complicação desafiadora de muitos procedimentos oftalmológicos. O manejo cirúrgico atual pode melhorar a acuidade visual apesar de o prognostico desta afecção ser ainda reservado.