Anterior segment optical coherence tomography in acute anterior uveitis / Tomografia de coerência óptica do segmento anterior em uveíte anterior aguda

Purpose: To analyze the corneal thickness and anterior chamber (AC) angle using anterior segment optical coherence tomography (AS-OCT) in patients with acute anterior uveitis (AAU). Methods: Twenty two patients (24 eyes) were included. All patients underwent complete ophthalmological examination, applanation tonometry and AS-OCT at diagnosis and fifteen days after treatment. Results: Average corneal thickness before treatment was 564.2 ± 44.2 µm, 580.0 ± 44.3 µm and 580.1 ± 2.9 µm, respectively in central, pericentral and paracentral cornea. Fifteen days after treatment a significant decrease of corneal thickness was observed, with 529.5 ± 33.1 µm (p=0.0091) and 542.6 ± 33.6 µm (p=0.0068), respectively in central and pericentral cornea; paracentral corneal thickness (557.8 ± 35.3 µm) thinning did not reach statistical significance (p=0.1253). There was no significant change in temporal AC angle between visits, 44.3 ± 14.4 degrees before treatment and 44.7 ± 14.7 degrees fifteen days after (p=0.9343), and mean intraocular pressure, 10.8 ± 4.5 mmHg before treatment and 12.3 ± 3.0 mmHg fifteen days after (p=0.1874). Conclusion: In the studied group, AS-OCT detected a decrease of corneal thickness after AAU treatment. Temporal AC angle and intraocular pressure did not change during the studied period. .

Objetivo: Analisar a espessura corneal e ângulo da câmara anterior (CA) utilizando a tomografia de coerência óptica de segmento anterior (OCT-SA) em pacientes com uveíte anterior aguda (UAA). Métodos: Foram selecionados 24 olhos de 22 pacientes com UAA. Todos foram submetidos a exame oftalmológico completo, tonometria de aplanação e OCT-SA na consulta inicial e após 15 dias de início do tratamento. Resultados: Na visita inicial, as médias da espessura corneal foram de 564,2 ± 44,2 µm e 580,0 ± 44,3 µm e 580,1 ± 2,9 µm, respectivamente para as regiões central, pericentral e paracentral. Após 15 dias de tratamento, observou-se redução da espessura para 529,5 ± 33,1 µm (p=0,0091) e 542,6 ± 33,6 µm (p=0,0068), respectivamente para a córnea central e pericentral; e um valor de 557,8 ± 35,3 µm para a região paracentral, porém para um p não significante (p=0,1253). Não foi observada mudança estatisticamente significante nos valores da porção temporal do ângulo da CA; 44,3 ± 14,4 graus na visita inicial e de 44,7 ± 14,7 graus após 15 dias de tratamento (p=0,9343) e na média das pressões intraoculares (PIO), 10,8 ± 4,5 mmHg na visita inicial e 12,3 ± 3,0 mmHg após tratamento (p=0,1874). Conclusão: No grupo estudado, obteve-se uma redução dos valores da espessura corneal após início do tratamento da UAA. Os valores da porção temporal do ângulo da CA e PIO não sofreram mudanças significantes. .

Delayed inflammation associated with retained perfluorocarbon liquid.

A 55-year-old woman, with history of cataract surgery 1 year back, presented with features of ocular inflammation for last 3 months. She had no history of any other intraocular surgery. On examination, anterior segment showed frothy material in the inferior angle with moderate anterior chamber reaction (cells+/flare+) and sulcus intraocular lens with large posterior capsule rent. Fundoscopy showed multiple, small to medium-sized transparent bubbles of perfluorocarbon liquid (PFCL) with membranes in the vitreous cavity. Ultrasonography confirmed the presence of PFCL in the vitreous cavity. Pars plana vitrectomy with anterior chamber wash was done which led to good visual recovery. To conclude, retained PFCL can cause late onset fibrinous inflammation after a quiescent period but surgical intervention may lead to good visual outcome.

Multiple Retinal Hemorrhage following Anterior Chamber Paracentesis in Uveitic Glaucoma

PURPOSE: We describe the occurrence of a massive retinal hemorrhage following anterior chamber paracentesis in uveitic glaucoma. METHODS: A 33-year-old man who suffered from uveitic glaucoma was transferred to our hospital. The IOP in both his eyes was documented to vary between 11 mmHg and 43 mmHg and remained at a continuously high level for 7 months despite maximally tolerable medical treatment. A paracentesis was performed bilaterally to lower the IOP. RESULTS: Immediately after the paracentesis, massive retinal hemorrhages occurred in the left eye. Multiple round blot retinal hemorrhages with white centers occurred in the equator and peripheral retina, and small slit hemorrhages were observed in the peripapillary area. A fluorescence angiography(FAG) showed no obstruction of retinal vessels but a slightly delayed arteriovenous time in the left eye. CONCLUSIONS: It is important to be aware that patients who have a persistent relatively high IOP are at an increased risk of developing decompression retinopathy due to paracentesis and filtering surgery.