Swept-source optical coherence tomography and swept-source optical coherence tomography angiography findings in circumscribed choroidal hemangioma before and after transpupillary thermotherapy.

PURPOSE: To investigate the swept-source optical coherence tomography (SS-OCT) and SS-OCT angiography (SS-OCTA) findings in circumscribed choroidal hemangioma (CCH) before and after treatment with transpupillary thermotherapy (TTT). METHODS: The clinical records of 21 eyes having CCH imaged with SS-OCT/SS-OCTA between September 2018 and December 2022 were evaluated. RESULTS: SS-OCT examination in CCH showed dome-shaped appearance (100%), choroidal shadowing (100%), expansion of choroidal structures (100%), subretinal fluid (66.7%), intraretinal edema/schisis (33.3%), retinal pigment epithelium (RPE) atrophy (19.0%), hyperreflective dots (19.0%), and epiretinal membrane (4.8%). Internal arborizing tumor vessels showing hyperreflectivity were observed in the choriocapillaris slab on SS-OCTA in all eyes. In the deep capillary plexus (DCP), flow void changes were seen in 7 eyes with intraretinal schisis/cystoid macular edema. Four CCHs > 2 mm in thickness showed outer retinal involvement due to unmasking of flow in intratumoral vessels related to RPE atrophy. Following TTT/indocyanine green-enhanced TTT (ICG-TTT) of CCH, SS-OCT findings included total/partial resolution of subretinal fluid (57.1%), complete/partial regression of the tumor (52.4%), and RPE atrophy (33.3%). After treatment; loss of choriocapillaris, decrease in tumor vascularity together with increase in the fibrous component and flow void areas were detected on SS-OCTA. CONCLUSIONS: SS-OCT/SS-OCTA are useful non-invasive tools for imaging the structural/vascular changes in CCHs managed with TTT or ICG-TTT. On SS-OCTA, hyporeflective spaces localizing to edema/schisis in the DCP and arborizing tumor vessels within a hyporeflective stromal background in the choriocapillaris slab were observed. After TTT/ICG-TTT, a decrease in tumor vessels and an increase in the fibrous component and flow-void areas inside the CCH were detected on SS-OCTA.

Multispectral Fundus Photography of Choroidal Nevi With Trans-Palpebral Illumination.

Purpose: The purpose of this study was to investigate the spectral characteristics of choroidal nevi and assess the feasibility of quantifying the basal diameter of choroidal nevi using multispectral fundus images captured with trans-palpebral illumination. Methods: The study used a widefield fundus camera with multispectral (625 nm, 780 nm, 850 nm, and 970 nm) trans-palpebral illumination to examine eight subjects diagnosed with choroidal nevi. Geometric features of nevi, including border clarity, overlying drusen, and lesion basal diameter, were characterized. Clinical imagers, including scanning laser ophthalmoscopy (SLO), autofluorescence (AF), and optical coherence tomography (OCT), were utilized for comparative assessment. Results: Fundus images depicted nevi as dark regions with high contrast against the background. Near-infrared (NIR) fundus images provided enhanced visibility of lesion borders compared to visible fundus images and SLO images. Lesion-background contrast measurements revealed 635 nm SLO at 11% and 625 nm fundus at 42%. Significantly enhanced contrasts were observed in NIR fundus images at 780 nm (73%), 850 nm (63%), and 970 nm (67%). For quantifying the diameter of nevi, NIR fundus images at 780 nm and 850 nm yielded a deviation of less than 10% when compared to OCT measurements. Conclusions: NIR fundus photography with trans-palpebral illumination enhances nevi visibility and boundary definition compared to SLO. Agreement in diameter measurements with OCT validates the accuracy and reliability of this method for choroidal nevi assessment. Translational Relevance: Multispectral fundus imaging with trans-palpebral illumination improves choroidal nevi visibility and accurately measures basal diameter, promising to enhance clinical practices in screening, diagnosis, and monitoring of choroidal nevi.

Naevi Characterization Using Hyperspectral Imaging: A Pilot Study.

PURPOSE: The prevalence of choroidal naevi is common and has been found to be up to 10%. Little is known regarding the optical properties of choroidal naevi. A novel hyperspectral eye fundus camera was used to investigate choroidal naevi's optical density spectra in the retina. METHODS: In an ophthalmology clinic setting, patients with choroidal naevi were included in the study. Visual acuity and pressure were tested. Following mydriatics, optical coherence tomography and fundus photography were taken as a reference, after which a hyperspectral image with 12 nm spectral resolution at 450-700 nm was taken. The optical density spectra was measured across the area of the naevus. RESULTS: Nine patients with 11 naevi were examined. The visual acuity was not affected by any of the naevi. All the naevi were flat as measured either with the optical coherence tomography and/or on inspection, and only one naevi had a risk factor (orange pigmentation). The Wasserstein distance between the background and the naevi was higher at 695 nm compared to 555 nm (p = .002). The naevi could be grouped into three clusters based on the extracted optical density spectra. CONCLUSION: Choroidal naevi are better visible in longer wavelengths compared to shorter wavelengths. This finding can be used to contour and follow choroidal naevi. Choroidal naevi expose different optical density spectra that can be grouped into three different clusters. One of these clusters has an optical density spectra resembling the absorption spectra of lipofuscin, which may indicate the content of this pigment.

Effects of oral propranolol for circumscribed choroidal hemangioma / Efeitos do propranolol oral para de hemangioma circunscrito de coroide

ABSTRACT Purpose: We aimed to evaluate the effects of oral propranolol for circumscribed choroidal hemangioma. Methods: In this prospective, longitudinal interventional study, we administered oral propranolol at a dosage of 1.5 mg/kg/day to five patients with circumscribed choroidal hemangioma. We then evaluated visual acuity, binocular indirect ophthalmoscopy, optical coherence tomography, optical coherence tomography angiography, fluorescein and indocyanine green angiography, and ocular ultrasonography at regular intervals and compared changes from the baseline assessments. Results: No clinical or diagnostic changes were observed in the sizes of the circumscribed choroidal hemangiomas during treatment. Complications due to the hemangioma were reduced in the first four months of treatment, followed by maintenance, before worsening in the subsequent three months. Conclusions: The study showed that oral propranolol at a dose of 1.5 mg/kg/day did not offer effective monotherapy in the treatment of circumscribed choroidal hemangioma.

RESUMO Objetivo: Avaliar o efeito do propranolol oral para hemangioma circunscrito da coroide. Métodos: O estudo é do tipo prospectivo, quantitativo e descritivo. Propranolol oral na dose de 1.5 mg/kg/dia foi administrada em cinco pacientes com hemangioma circunscrito da coroide. Todos os pacientes foram avaliados com acuidade visual, oftalmoscopia binocular indireta, tomografia de coerência óptica, angiografia com tomografia de coerência óptica, angiografia com fluoresceína e indocianina verde e ultrassonografia ocular. Resultados: Nenhuma mudança clínica ou no tamanho do hemangioma circunscrito da coroide foi vista através de métodos diagnósticos em qualquer momento do tratamento. Uma atenuação das complicações foi observada nos primeiros quatro meses de tratamento, com manutenção da condição e piora nos meses seguintes. Conclusão: O estudo mostrou que o propranolol oral na dose de 1.5 mg/kg/dia não se mostrou efetivo como monoterapia no tratamento do hemangioma circunscrito da coroide.

Comparisons of choroidal nevus measurements obtained using 10- and 20-MHz ultrasound and spectral domain optical coherence tomography / Comparação entre a medida de nevus de coroide obtida com 10-MHz e 20-MHz e tomografia de coerência óptica de domínio espectral

ABSTRACT Purpose: To compare measurements of lesions clinically diagnosed as choroidal nevi using spectral domain optical coherence tomography (SD-OCT) and 10- and 20-MHz ultrasound (US). Methods: This prospective study, which was conducted between May 2011 and December 2011, evaluated eyes diagnosed with choroidal nevus via photographic documentation using 10- or 20-MHz A- and B-mode US (experienced examiner using both the transpalpebral technique and direct contact) or SD-OCT in the enhanced depth imaging mode (performed by a different examiner blinded to the US results). Anteroposterior (AP) and transverse (T) US sections corresponded to sections adjusted perpendicularly on SD-OCT. Results: We evaluated 14 eyes from 12 patients (six males, mean patient age= 64.5 years) diagnosed with choroidal nevus. The choroidal nevi of all samples had a melanocytic profile. Moreover, eight nevi were located at the equator, five nevi were located in the posterior pole (peripapillary in one sample), and one nevus shifted from the equator to the periphery. On SD-OCT, the maximum measurable dimension was 9 mm. The lesions in the posterior pole were easier to evaluate, and image acquisition of lesions located more peripherally was possible depending on patient cooperation. The accurate assessment of height was difficult. Baseline dimensions on 10- and 20-MHz US were larger than those determined via OCT. No significant differences in height were observed between US and SD-OCT. All parameters were statistically similar between 10- and 20-MHz US measurements. Conclusions: No significant difference in the AP and T diameters was observed between 10- and 20-MHz US measurements; however, these measurements (AP and T) were significantly higher than those obtained using OCT. No significant differences in height were observed among the techniques adopted.

RESUMO Objetivo: Comparar as medidas obtidas de lesões diagnosticadas clinicamente como nevus de coroide através da tomografia de coerência óptica de domínio espectral (Spectralis, Heidelberg Engineering, Inc.), ultrassonografia com 10 MHz e de 20 MHz. Métodos: Estudo prospectivo realizado entre maio e dezembro de 2011, avaliou olhos com diagnóstico de nevus de coroide, utilizando documentação fotográfica, ultrassonografia com transdutor 10-MHz e 20-MHz A- e B-mode e SD-OCT em modo de EDI, por um examinador diferente para cada técnica. Os cortes realizados perpendiculares entre si, correspondentes ao corte ântero-posterior e latero-lateral à ultrassonografia. Resultados: Foram avaliados 14 olhos de 12 pacientes (6 do sexo masculino), com média de idade média de 64,5 anos. Todos os nevus tinham um perfil melanocítico. Observou-se 8 nevus no equador, 5 no polo posterior (peripapilar em uma amostra), e 1 deslocado a partir do equador para a periferia. Em SD-OCT, a dimensão máxima mensurável foi de 9 mm. As lesões no polo posterior eram mais fáceis de avaliar e aquisição de imagens de lesões mais periféricas era possível, dependendo da colaboração do paciente. A avaliação precisa da altura era difícil. As dimensões usando transdutor 10-MHz e 20-MHz US foram maiores que as encontradas pelo SD-OCT. Não foram observadas diferenças significativas na altura entre métodos SD-OCT e US. Todas as medidas foram estatisticamente semelhantes entre 20-MHz e 10-MHz. Conclusão: Para o parâmetro AP e T não foi detectada diferença entre as medidas utilizando US de 10-MHz e de 20-MHz. Porém estas medidas se mostraram significativamente maiores em relação à medida obtida com OCT. Para a altura, não foram detectadas diferenças estatística em relação à técnica utilizada, US 10-MHz e 20-MHz e SD-OCT.

Enhanced depth imaging optical coherence tomography of choroidal osteoma with secondary neovascular membranes: report of two cases / Tomografia de coerência óptica com imagem profunda aprimorada de osteoma de coroide com membrana neovascular secundária: relato de 2 casos

ABSTRACT We report enhanced depth imaging optical coherence tomography (EDI-OCT) features based on clinical and imaging data from two newly diagnosed cases of choroidal osteoma presenting with recent visual loss secondary to choroidal neovascular membranes. The features described in the two cases, compression of the choriocapillaris and disorganization of the medium and large vessel layers, are consistent with those of previous reports. We noticed a sponge-like pattern previously reported, but it was subtle. Both lesions had multiple intralesional layers and a typical intrinsic transparency with visibility of the sclerochoroidal junction.

RESUMO Relatamos as características na tomografia computadorizada óptica (EDI-OCT) de 2 pacientes recém diagnosticados com osteoma de coroide apresentando perda visual secundária à membranas neovasculares coroideanas. As características descritas em nossos 2 casos foram consistentes com trabalhos anteriores, exibindo a compressão da coriocapilar e desorganização das camadas médias e de grandes vasos. Notamos também o padrão em esponja anteriormente descrito, porém de forma discreta. Ambas as lesões tinham várias camadas intralesionais e uma transparência intrínseca típica com visibilidade da junção da esclero-coroideana.