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PURPOSE: This article introduces the Pentacam® Cornea OCT (optical coherence tomography). This advanced corneal imaging system combines rotating ultra-high-resolution spectral domain OCT with sub- 2-micron axial resolution and Scheimpflug photography. The purpose of this study is to present the first experience with the instrument and its potential for corneal diagnostics, including optical biopsy. METHODS: In this prospective study, the Pentacam® Cornea OCT was used to image the corneas of seven patients. The novel wide-angle pericentric scan system enables optimal OCT imaging performance for the corneal layer structure over the entire width of the cornea, including the limbal regions. A detailed analysis of the resulting images assessed the synergism between the OCT and Scheimpflug photography. RESULTS: The Pentacam® Cornea OCT demonstrated significantly improved image resolution and ability to individualize corneal layers with high quality. There is a synergism between the OCT high-definition signal to individualize details on the cornea and Scheimpflug photography to detect and quantify corneal scattering. The noncontact exam was proven safe, user-friendly, and effective for enabling optical biopsy. CONCLUSIONS: Pentacam® Cornea OCT is an advancement in corneal imaging technology. The ultra-high-resolution spectral domain OCT and Scheimpflug photography provide unprecedented detail and resolution, enabling optical biopsy and improving the understanding of corneal pathology. Further studies are necessary to compare and analyze the tomographic reconstructions of the cornea with the different wavelengths, which may provide helpful information for diagnosing and managing corneal diseases.

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ABSTRACT Purpose: To compare data extracted from the Pentacam exam in patients with keratoconus in one eye and form fruste keratoconus in the other eye. Setting: Private clinic in São Paulo, Brazil. Design: Retrospective review. Methods: This study reviewed charts of patients with keratoconus in one eye and forme fruste keratoconus (FFKC) in the other, from January to December 2019. All subjects were evaluated with a rotating Scheimpflug imaging system. Twenty-two eyes of 11 patients were compared, and only one eye had established diagnostic criteria for keratoconus. Given this, 38 variables obtained through Pentacam were compared. Results: In eyes with keratoconus, several parameters exhibit significant alterations compared to those with FFK eyes. Notably, Belin elevation and posterior and total densitometry remain consistently significant, indicating early changes in mild forms of the disease and progression over time. Additionally, indicators such as IVA, KI, IHD, posterior elevation of BFTA, and R min demonstrate notable changes in FFKC eyes. Among these, the index of height decentration (IHD) stands out, with the highest alteration rate of 81.8% in FFKC patients. Furthermore, parameters like the D index (total), EI posterior, and Maximum posterior elevation with BFS, IHD, Kmax, and Q value demonstrate high accuracy, sensitivity, and specificity in distinguishing FFKC from control eyes. Kmax, Belin Ambrósio Posterior Elevation, IHD, and posterior elevation of best-fit reference sphere (BFS Posterior Elevation) emerge as the most altered parameters in FFKC. Conclusion: We considered the IHD, the BFS posterior elevation, Kmax, asphericity, Belin-Ambrósio display, and decentration of the thinnest point as sensitive indicators for initial keratoconus cases, IHD being the most accurate of them.

RESUMO Objetivo: Comparar os dados extraídos do exame Pentacam em pacientes com ceratocone em um olho e ceratocone frusto no outro olho. Local: Clínica privada em São Paulo, Brasil. Desenho do estudo: Revisão retrospectiva. Métodos: Este estudo revisou prontuários de pacientes com ceratocone em um olho e ceratocone forma frusta (FFKC) no outro, de janeiro a dezembro de 2019. Todos os indivíduos foram avaliados com um sistema de imagem Scheimpflug rotativo. Vinte e dois olhos de 11 pacientes foram comparados, e apenas um olho tinha critérios diagnósticos estabelecidos para ceratocone. Diante disso, 38 variáveis obtidas através do Pentacam foram comparadas. Resultados: Em olhos com ceratocone, vários parâmetros apresentam alterações significativas em relação àqueles com olhos FFKC. Notavelmente, a elevação de Belin e a densitometria posterior e total permanecem consistentemente significativas, indicando mudanças precoces nas formas leves da doença e progressão ao longo do tempo. Além disso, indicadores como IVA, KI, IHD, elevação posterior do BFTA e R min demonstram alterações notáveis nos olhos do FFKC. Dentre estes, destaca-se o índice de descentração da altura (IHD), com maior taxa de alteração de 81,8% nos pacientes com FFKC. Além disso, parâmetros como o índice D (total), IE posterior e elevação máxima posterior com BFS, IHD, Kmáx e valor de Q demonstram alta acurácia, sensibilidade e especificidade na distinção entre o FFKC e o olho controle. Kmax, Belin Ambrósio Elevação Posterior, IHD e elevação posterior utilizando BFS (BFS Posterior Elevation) emergem como os parâmetros mais alterados no FFKC. Conclusão: Consideramos o IHD, a elevação posterior com BFS, Kmáx, a asfericidade, o Belin-Ambrósio e a descentração do ponto mais fino como indicadores sensíveis para os casos iniciais de ceratocone, sendo o IHD o mais preciso.

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ABSTRACT This report described a case of a 56-year-old female patient with a history of pterygium excision and use of mitomycin C eye drops during the postoperative period who developed necrotizing infectious scleritis caused by Pseudomonas aeruginosa. The patient was admitted for treatment with intravenous antibiotic therapy, topical fortified antibiotics, systemic corticotherapy, and debridement of the necrotic ocular tissue. After 3 weeks, she presented with good clinical evolution and resolution of the infection. Mitomycin eye drops should be used cautiously, particularly after surgery. If mitomycin is used, it should be applied at the lowest concentration and for the shortest duration possible and should be avoided postoperatively to prevent these complications. Although scleral infection is a serious condition with a high risk of permanent vision loss, early and appropriate treatment can be critical for good clinical outcomes.

RESUMO Este relato descreve o caso de uma paciente de 56 anos com história de exérese de pterígio e uso de colírio de mitomicina C no pós-operatório, que desenvolveu esclerite infecciosa necrosante por Pseudomonas aeruginosa. A paciente foi internada para tratamento com antibioticoterapia endovenosa, antibióticos tópicos fortificados, corticoterapia sistêmica e desbridamento do tecido necrótico ocular. Após 3 semanas, apresentou boa evolução clínica e resolução da infecção. Os colírios de mitomicina devem ser usados com cautela, principalmente após a cirurgia. Se a mitomicina for usada, ela deve ser aplicada na menor concentração e pela menor duração possível, devendo ser evitada no pós-operatório, para evitar essas complicações. Embora a infecção escleral seja uma condição grave com alto risco de perda permanente da visão, o tratamento precoce e correto pode ser fundamental para bons resultados clínicos.

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ABSTRACT Purpose: The aim of this study was to describe the epidemiological profile of uveitis cases treated at University Hospital Clementino Fraga Filho and to identify the presentation pattern of intraocular inflammation on the basis of clinical, anatomical, etiological, and demographic criteria. Methods: A retrospective study was conducted using data from the medical records of 408 patients with active disease who attended the ophthalmology service between March and October 2018. Age, sex, visual acuity at the time of diagnosis, anatomical and etiological diagnoses, the clinical aspect, and the main symptoms reported during anamnesis were described. Results: Of the 408 patients in the study, 52% were male and 48% were female. The patients' mean age was 42 years, and most (84%) were between 19 and 64 years old. Anterior uveitis was observed in 37.75% of the patients; posterior uveitis, in 49.75%; panuveitis, in 4.66%; and intermediate uveitis, in 3.43%. Only 18 patients (4.41%) presented with scleritis. Of the 390 patients with anatomical classifications, 76% had known etiologies, with the most prevalent diagnoses being toxoplasmosis (35.4%), followed by juvenile idiopathic arthritis (6.4%), ankylosing spondylitis (5.9%), and syphilis (4.9%). Infectious uveitis corresponded to 49.7% of the patients, while 26.6% of the cases were of noninfectious origin. Anterior uveitis had the highest number of cases classified as idiopathic (49.4%). In the cases of posterior uveitis, the etiology was established 94% of the time. The most frequent symptoms were ocular pain (71.8%) and blurring vision (56.8%). Conclusions: The present study confirmed the historical importance of infectious uveitis in our population, especially ocular toxoplasmosis. Uveitis appears to have no predilection for sex but mainly affects young people of working age, thus generating social and economic consequences. Despite the evolution of diagnostic methods, idiopathic uveitis remains one of the major etiologies. Epidemiological studies point to different presentation patterns of uveitis in different populations, but these may reflect the distinct characteristics of each institution.

RESUMO Objetivo: Descrever o perfil epidemiológico das uveítes atendidas no Hospital Universitário Clementino Fraga Filho - UFRJ. Identificando o padrão de apresentação da inflamação intraocular a partir de critérios clínicos, anatômicos, etiológicos e demográficos. Métodos: Estudo retrospectivo, com base em prontuários de 408 pacientes com doença ativa, atendidos no serviço de oftalmologia no período de março a outubro de 2018. Foram descritos a idade, sexo, acuidade visual no momento do diagnóstico, diagnóstico anatômico e etiológico, aspecto clínico, além dos principais sintomas relatados durante a anamnese. Resultados: Dos 408 pacientes do estudo, 52% eram do sexo masculino e 48% do feminino. A idade média dos pacientes foi de 42 anos, a maioria (84%) entre 19 e 64 anos. Uveíte anterior foi observada em 37,75% dos pacientes, uveíte posterior em 49,75%, panuveíte em 4,66% e uveíte intermediária em 3,43%; apenas 18 pacientes (4,41%) apresentaram diagnóstico de esclerite. Dos 390 pacientes com classificação anatômica, a etiologia foi determinada em 76% deles, com os diagnósticos mais prevalentes sendo Toxoplasmose (35,4%), artrite idiopática juvenil (6,4%), espondilite anquilosante (5,9%) e sífilis (4,9%). ) A uveíte infecciosa correspondeu a 49,7% desses pacientes, enquanto 26,6% eram de origem não infecciosa. A uveíte anterior teve o maior número de casos classificados como idiopáticos (49,4%), enquanto a uveíte posterior teve a etiologia estabelecida em 94% das vezes. Os sintomas mais frequentes foram dor ocular (71,8%) e visão embaçada (56,8%). Conclusões: O presente estudo confirmou a importância histórica da uveíte infecciosa em nossa população, principalmente a toxoplasmose ocular. As uveítes parecem não ter predileção por sexo, mas afetam principalmente jovens em idade ativa, gerando consequências sociais e econômicas. Apesar da evolução nos métodos diagnósticos, a uveíte idiopática continua sendo uma das principais causas. Estudos epidemiológicos apontam para diferentes padrões de uveíte nas populações, estes podem refletir características particulares de cada instituição.

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PURPOSE: The aim of this study was to describe the epidemiological profile of uveitis cases treated at University Hospital Clementino Fraga Filho and to identify the presentation pattern of intraocular inflammation on the basis of clinical, anatomical, etiological, and demographic criteria. METHODS: A retrospective study was conducted using data from the medical records of 408 patients with active disease who attended the ophthalmology service between March and October 2018. Age, sex, visual acuity at the time of diagnosis, anatomical and etiological diagnoses, the clinical aspect, and the main symptoms reported during anamnesis were described. RESULTS: Of the 408 patients in the study, 52% were male and 48% were female. The patients' mean age was 42 years, and most (84%) were between 19 and 64 years old. Anterior uveitis was observed in 37.75% of the patients; posterior uveitis, in 49.75%; panuveitis, in 4.66%; and intermediate uveitis, in 3.43%. Only 18 patients (4.41%) presented with scleritis. Of the 390 patients with anatomical classifications, 76% had known etiologies, with the most prevalent diagnoses being toxoplasmosis (35.4%), followed by juvenile idiopathic arthritis (6.4%), ankylosing spondylitis (5.9%), and syphilis (4.9%). Infectious uveitis corresponded to 49.7% of the patients, while 26.6% of the cases were of noninfectious origin. Anterior uveitis had the highest number of cases classified as idiopathic (49.4%). In the cases of posterior uveitis, the etiology was established 94% of the time. The most frequent symptoms were ocular pain (71.8%) and blurring vision (56.8%). CONCLUSIONS: The present study confirmed the historical importance of infectious uveitis in our population, especially ocular toxoplasmosis. Uveitis appears to have no predilection for sex but mainly affects young people of working age, thus generating social and economic consequences. Despite the evolution of diagnostic methods, idiopathic uveitis remains one of the major etiologies. Epidemiological studies point to different presentation patterns of uveitis in different populations, but these may reflect the distinct characteristics of each institution.

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Abstract We present a case of 50-years-old, man with vision loss, dysmorphopsia and micropsy in the right eye with for 6 months. Ocular history included uncomplicated cataract surgery 10 years before. Best corrected visual acuity was 20/100 in the right eye and 20/20 in the left eye. Anterior segment OD demonstrated intra-ocular lens (IOL) haptic in the anterior chamber with iris perforation. Fundus examination revealed cystoid macular edema in right eye. Surgical approach with reposition of the IOL and triamcinolone acetonide intravitreal injection were performed with visual and tomographical improvement.

Resumo Apresentamos o caso de um homem de 50 anos, com queixa de perda de visão, dismorfopsia e micropsia em olho direito (OD) há 6 meses. A história ocular incluiu cirurgia de catarata sem complicações 10 anos antes. A melhor acuidade visual corrigida foi 20/100 em OD e 20/20 em olho esquerdo. O segment anterior do OD demonstrou háptica da lente intraocular (LIO) na câmara anterior com perfuração da íris. A fundoscopia revelou edema macular cistoide em OD. A abordagem cirúrgica com reposição da LIO e injeção intravítrea de triancinolona acetonida foi realizada com melhora visual e tomográfica.

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Resumo Apresentamos um caso de neurosífilis em um homem jovem, com queixa de baixa acuidade visual (BAV) em olho esquerdo. Cursou com lesões eritemato-descamativas nas palmas das mãos, plantas dos pés e úlceras orais, sem lesões genitais. O exame oftalmológico revelou arterite em arcada nasal superior no olho afetado. Apresentou VDRL (1:4096) e FTA-Abs positivos. O exame do líquor cefalorraquidiano foi negativo. O tratamento foi realizado com ceftriaxona 2g/ dia por 14 dias, associado à prednisona 0,5mg/kg oral 48h após início do antibiótico. Após 15 dias de tratamento, houve melhora da AV, regressão da vasculite e redução da titulação do VDRL para 1:128.

Abstract We present a case of neurosyphilis in a young man with a complaint of low visual acuity in the left eye. He had erythematous-scaly lesions on the palms of the hands, soles of the feet and oral ulcers, without genital lesions. The ophthalmic examination revealed arteritis in the upper nasal arcade in the affected eye. He presented VDRL (1: 4096) and FTA-Abs positive. The cerebrospinal fluid cerebrospinal fluid test was negative. The treatment was performed with ceftriaxone 2g / day for 14 days, associated with prednisone 0.5mg / kg oral 48h after antibiotic onset. After 15 days of treatment, there was improvement of AV, regression of vasculitis and reduction of VDRL titration to 1: 128.

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Resumo Apresentamos um caso de distrofia macular oculta bilateral, em paciente de 70 anos com queixa de baixa acuidade visual progressiva, sem achados fundoscópicos ou angiográficos justificáveis. Foram realizados exames de imagem do sistema nervoso central que afastaram lesões expansivas e testes eletrofisiológicos que sugeriram diagnóstico.

Abstract We report a case of bilateral occult macular dystrophy in a 70-year-old woman with progressive low visual acuity, without justifiable fundoscopic or angiographic findings. Imaging tests were done to excluding expansive lesions and electrophysiological tests that suggested the diagnosis.

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Acute disseminated encephalomyelitis (ADEM) is a demyelinating autoimmune neuropathic condition characterized by extensive bilateral and confluent lesions in the cerebral white matter and cerebellum. The basal ganglia and gray matter may also be involved. In most cases, the symptoms are preceded by viral infection or vaccination. In this report, we present a case of ADEM associated with optic neuritis presenting alongside two potential triggering factors: chikungunya virus infection and yellow fever immunization.

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Abstract Acute disseminated encephalomyelitis (ADEM) is a demyelinating autoimmune neuropathic condition characterized by extensive bilateral and confluent lesions in the cerebral white matter and cerebellum. The basal ganglia and gray matter may also be involved. In most cases, the symptoms are preceded by viral infection or vaccination. In this report, we present a case of ADEM associated with optic neuritis presenting alongside two potential triggering factors: chikungunya virus infection and yellow fever immunization.

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