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ABSTRACT Purpose: To evaluate using optical coherence tomography angiography the macular and optic nerve head blood flow in pediatric patients with epilepsy treated with levetiracetam for at least 12 months. Methods: This study included 33 pediatric patients with epilepsy and 30 sex- and age-matched healthy volunteer children were included in the study. Optical coherence tomography angiography was used to evaluate the optic nerve head and macular perfusion changes. The mean ocular perfusion pressures were also calculated. Patients who were using multiple antiepileptic drugs or had a prior history of using different drugs were excluded. Results: The choriocapillaris flow area was significantly lower in the Study Group than in the Control Group (p=0.006). However, the foveal avascular zone and vessel densities of the macula in the superficial capillary plexus, deep capillary plexus, and optic nerve head of the study group were not significantly different from those of the control group (p>0.05). Moreover, no significant difference in means of mean ocular perfusion pressure was found between the two groups (p=0.211). No obvious correlation was found between treatment duration and optical coherence tomography angiography parameters or mean ocular perfusion pressure. Conclusion: Choroidal perfusion was reduced in children taking levetiracetam compared with that in the control group, whereas retinal perfusion was not affected in this optical coherence tomography angiography study.

RESUMO Objetivo: Avaliar através de angiotomografia de coerência óptica o fluxo sanguíneo macular e da cabeça do nervo óptico em pacientes pediátricos com epilepsia tratados com levetiracetam por pelo menos 12 meses. Método: Trinta e três pacientes pediátricos com epilepsia e 30 crianças voluntárias saudáveis pareadas por sexo e idade foram incluídos no estudo. A angiotomografia de coerência óptica foi utilizada para avaliar as alterações da perfusão da cabeça do nervo óptico e da macular. As médias das pressões de perfusão ocular também foram calculadas. Pacientes em uso de múltiplas drogas antiepilépticas ou com história prévia de uso de diferentes drogas foram excluídos do estudo. Resultado: A área do fluxo coriocapilar foi significativamente menor no Grupo Estudo do que no Grupo Controle (p=0,006). Entretanto, a zona avascular foveal e as densidades vasculares no plexo capilar superficial e profundo da região macular e na cabeça do nervo óptico não foram significativamente diferentes daquelas de olhos saudáveis (p>0,05). Também não houve diferença significativa entre os dois grupos em relação às médias da pressão de perfusão ocular (p=0,211). Nenhuma correlação aparente foi encontrada entre a duração do tratamento e os parâmetros da angiotomografia de coerência óptica ou a média da pressão de perfusão ocular. Conclusão: Em crianças usando levetiracetam, a perfusão coroidal mostrou-se reduzida em comparação ao grupo controle, enquanto a perfusão retiniana não foi afetada neste estudo com angiotomografia de coerência óptica.

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PURPOSE: To evaluate using optical coherence tomography angiography the macular and optic nerve head blood flow in pediatric patients with epilepsy treated with levetiracetam for at least 12 months. METHODS: This study included 33 pediatric patients with epilepsy and 30 sex- and age-matched healthy volunteer children were included in the study. Optical coherence tomography angiography was used to evaluate the optic nerve head and macular perfusion changes. The mean ocular perfusion pressures were also calculated. Patients who were using multiple antiepileptic drugs or had a prior history of using different drugs were excluded. RESULTS: The choriocapillaris flow area was significantly lower in the Study Group than in the Control Group (p=0.006). However, the foveal avascular zone and vessel densities of the macula in the superficial capillary plexus, deep capillary plexus, and optic nerve head of the study group were not significantly different from those of the control group (p>0.05). Moreover, no significant difference in means of mean ocular perfusion pressure was found between the two groups (p=0.211). No obvious correlation was found between treatment duration and optical coherence tomography angiography parameters or mean ocular perfusion pressure. CONCLUSION: Choroidal perfusion was reduced in children taking levetiracetam compared with that in the control group, whereas retinal perfusion was not affected in this optical coherence tomography angiography study.

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PURPOSE: The purpose of this study was to assess the optic nerve head microvascular changes in pseudoexfoliative and primary open-angle glaucoma and define the relationship between vessel density and retinal nerve fiber layer thickness. METHODS: This observational cross-sectional study assessed 72 eyes with primary open-angle glaucoma, 41 eyes with pseudoexfoliative glaucoma, and 60 healthy eyes. On the basis of optic nerve head-centered, 4.5 mm × 4.5 mm scan size images, we evaluated the vessel density, as well as the peripapillary sector, inside disk, and all sectoral quadrants. RESULTS: Both glaucoma Groups had lower vessel density in all regions compared with the healthy Group (p<0.05 for all variables). Vessel densities of the nasal inferior, inferior nasal, and inferior temporal sectors in both glaucoma Groups showed similar results (p=0.157, p=0.128, p=0.143, respectively). Eyes with pseudoexfoliative glaucoma had significantly lower vessel densities than eyes with primary open-angle glaucoma in all other regions (p<0.05 for all variables). For both glaucoma Groups, the average retinal nerve fiber layer thickness positively correlated with vessel density in all peripapillary sectors (p<0.05 for all variables). CONCLUSIONS: Reduction in vessel density correlated with the thinning of retinal nerve fiber layer in both glaucoma Groups. Decreased vessel density in the optic nerve head can be used to demonstrate the microvascular pathologies and possible ischemic changes that lead to faster progression and worse prognosis in pseudoexfoliative glaucoma.

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Abstract Purpose: The purpose of this study was to assess the optic nerve head microvascular changes in pseudoexfoliative and primary open-angle glaucoma and define the relationship between vessel density and retinal nerve fiber layer thickness. Methods: This observational cross-sectional study assessed 72 eyes with primary open-angle glaucoma, 41 eyes with pseudoexfoliative glaucoma, and 60 healthy eyes. On the basis of optic nerve head-centered, 4.5 mm × 4.5 mm scan size images, we evaluated the vessel density, as well as the peripapillary sector, inside disk, and all sectoral quadrants. Results: Both glaucoma Groups had lower vessel density in all regions compared with the healthy Group (p<0.05 for all variables). Vessel densities of the nasal inferior, inferior nasal, and inferior temporal sectors in both glaucoma Groups showed similar results (p=0.157, p=0.128, p=0.143, respectively). Eyes with pseudoexfoliative glaucoma had significantly lower vessel densities than eyes with primary open-angle glaucoma in all other regions (p<0.05 for all variables). For both glaucoma Groups, the average retinal nerve fiber layer thickness positively correlated with vessel density in all peripapillary sectors (p<0.05 for all variables). Conclusions: Reduction in vessel density correlated with the thinning of retinal nerve fiber layer in both glaucoma Groups. Decreased vessel density in the optic nerve head can be used to demonstrate the microvascular pathologies and possible ischemic changes that lead to faster progression and worse prognosis in pseudoexfoliative glaucoma.

Resumo Objetivo: Atribuir variações microvasculares à cabeça do nervo óptico no glaucoma pseudoesfoliativo e primário de ângulo aberto, e definir a relação entre a densidade dos vasos e a espessura da camada de fibras nervosas da retina. Métodos: Este estudo foi projetado como observacional e transversal. Foram incluídos 72 olhos com glaucoma primário de ângulo aberto, 41 olhos com glaucoma pseudoesfoliativo e 60 olhos saudáveis. Foram obtidas imagens do nervo óptico centralizadas na cabeça do nervo com 4,5 × 4,5 mm de tamanho de varredura. A densidade vascular foi avaliada em toda a imagem, na área peripapilar, dentro do disco óptico e em todos os quadrantes setoriais. Resultados: Em todas as regiões, a densidade vascular foi menor em ambos os grupos com glaucoma que nos olhos saudáveis (p<0,05 para todas as variáveis). Em ambos os grupos com glaucoma, a densidade vascular mostrou resultados semelhantes nos setores nasal inferior, inferior nasal e temporal inferior (respectivamente, p=0,157, p=0,128 e p=0,143). Os olhos com glaucoma pseudoesfoliativo mostraram densidade vascular acentuadamente menor que nos olhos com glaucoma primário de ângulo aberto em todas as outras regiões (p<0,05). A espessura média da camada de fibras nervosas da retina demonstrou uma correlação positiva com a densidade vascular em todos os setores peripapilares em ambos os grupos com glaucoma (p<0,05 para todas as variáveis). Conclusões: A redução da densidade vascular foi correlacionada a uma redução da espessura da camada de fibras nervosas da retina em ambos os grupos com glaucoma. A densidade vascular reduzida na cabeça do nervo óptico poderia ser usada para provar patologias microvasculares e possíveis alterações isquêmicas responsáveis por uma evolução mais rápida e um prognóstico pior no glaucoma pseudoesfoliativo.

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ABSTRACT Purpose: To perform a long-term comparison of the quantitative efficacy of internal and external browpexy in combination with upper-lid blepharoplasty based on lateral and central eyebrow positions. Methods: This retrospective study evaluated internal and external browpexy with upper-lid blepharoplasty surgeries that were performed during the period between January 2012 and December 2017 in the oculoplastic surgery department of our hospital. Patients who had undergone periorbital and forehead surgery, who had ophthalmologic or neurological diseases, and who were Botox users were not included in the study. Preoperative and postoperative measurements were made on photographs taken in the same position. The distances from the pupil center and from the point of intersection between the horizontal line passing through the pupil and the vertical line passing through the lateral canthus to the upper eyebrow borders were measured. Photogrammetric analysis of eyebrow position was analyzed using Corel Draw software. Results: Preoperative and postoperative photographs of 70 eyelids were analyzed. Measurements were taken 24 months after surgery. Mean elevations of 2.10 and 3.19 mm were observed in the central region and lateral regions, respectively, in the internal browpexy group. These elevations were 2.66 and 3.03 mm in the external browpexy group and 0.48 and 0.55 mm in the control group. Eyebrow elevations in the central and lateral regions were not significantly different from baseline in the control group (p=0.126 and p=0.25). Internal and external browpexy showed statistically similar elevation values in the central and lateral regions (p=0.636 and p=0.342). Conclusions: External and internal browpexy surgery afforded adequate and similar elevations of the central and lateral brow, which were significantly different from those in the standard blepharoplasty group during long-term follow-up.

RESUMO Objetivo: Avaliar a comparação, a longo prazo, da eficácia quantitativa da sobrancelha interna e externa em combinação com a blefaroplastia da pálpebra superior com base nas posições lateral e central da sobrancelha. Métodos: Este estudo retrospectivo avaliou as cirurgias interna e externa da braquiterapia com blefaroplastia de pálpebra superior realizadas entre janeiro de 2012 e dezembro de 2017 no setor de cirurgia Oculoplástica de nosso hospital. Pacientes submetidos à cirurgia periorbitária e frontal, com doenças oftalmológicas ou neurológicas e usuários de Botox não foram incluídos no estudo. Medidas pré e pós-operatórias foram feitas em fotografias tiradas na mesma posição. Foram medidas as distâncias do centro da pupila e do ponto de intersecção entre a linha horizontal que passa pela pupila e a linha vertical que passa pelo canto lateral do olho até as bordas superiores da sobrancelha. A análise fotogramétrica da posição da sobrancelha foi analisada usando o software Corel Draw. Resultados: Foram analisadas fotografias pré e pós-operatórias de 70 pálpebras. As medidas foram feitas 24 meses após a cirurgia. Elevações médias de 2,10 e 3,19 mm foram observadas na região central e laterais, respectivamente, no grupo de sobrancelha interna. Essas elevações foram de 2,66 e 3,03 mm no grupo da sobrancelha externa e 0,48 e 0,55 mm no grupo controle (p=0,126, p=0,25). A sobrancelha interna e externa apresentou valores de elevação estatisticamente semelhantes nas regiões central e lateral (p=0,636, p=0,342). Conclusões: Cirurgia de sobrancelha externa e interna proporcionam elevações adequadas e semelhantes nas sobrancelhas central e lateral que foram significativamente diferentes daqueles no grupo de blefaroplastia padrão no acompanhamento a longo prazo.

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PURPOSE: To perform a long-term comparison of the quantitative efficacy of internal and external browpexy in combination with upper-lid blepharoplasty based on lateral and central eyebrow positions. METHODS: This retrospective study evaluated internal and external browpexy with upper-lid blepharoplasty surgeries that were performed during the period between January 2012 and December 2017 in the oculoplastic surgery department of our hospital. Patients who had undergone periorbital and forehead surgery, who had ophthalmologic or neurological diseases, and who were Botox users were not included in the study. Preoperative and postoperative measurements were made on photographs taken in the same position. The distances from the pupil center and from the point of intersection between the horizontal line passing through the pupil and the vertical line passing through the lateral canthus to the upper eyebrow borders were measured. Photogrammetric analysis of eyebrow position was analyzed using Corel Draw software. RESULTS: Preoperative and postoperative photographs of 70 eyelids were analyzed. Measurements were taken 24 months after surgery. Mean elevations of 2.10 and 3.19 mm were observed in the central region and lateral regions, respectively, in the internal browpexy group. These elevations were 2.66 and 3.03 mm in the external browpexy group and 0.48 and 0.55 mm in the control group. Eyebrow elevations in the central and lateral regions were not significantly different from baseline in the control group (p=0.126 and p=0.25). Internal and external browpexy showed statistically similar elevation values in the central and lateral regions (p=0.636 and p=0.342). CONCLUSIONS: External and internal browpexy surgery afforded adequate and similar elevations of the central and lateral brow, which were significantly different from those in the standard blepharoplasty group during long-term follow-up.

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