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<front>
<journal-meta>
<journal-id journal-id-type="publisher-id">rbof</journal-id>
<journal-title-group>
<journal-title>Revista Brasileira de Oftalmologia</journal-title>
<abbrev-journal-title abbrev-type="publisher">Rev. bras.oftalmol.</abbrev-journal-title></journal-title-group>
<issn pub-type="ppub">0034-7280</issn>
<issn pub-type="epub">1982-8551</issn>
<publisher>
<publisher-name>Sociedade Brasileira de Oftalmologia</publisher-name></publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.37039/1982.8551.20260050</article-id>
<article-id pub-id-type="other">1982.8551.20260050</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>RELATO DE CASO</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>Glaucoma de pressão normal associado à apneia obstrutiva do sono: relato de caso com progressão sob pressão intraocular controlada</article-title>
<trans-title-group xml:lang="en">
<trans-title>Normal-tension glaucoma associated with obstructive sleep apnea: case report of progression under controlled intraocular pressure</trans-title>
</trans-title-group>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<contrib-id contrib-id-type="orcid">0009-0003-3674-2460</contrib-id>
<name><surname>Budib</surname><given-names>Camyla Lemos</given-names></name>
<xref ref-type="aff" rid="aff1"><sup>1</sup></xref><xref ref-type="corresp" rid="c1"/>
<role>contribuiu na concepção e delineamento do estudo</role>
<role>análise e interpretação dos resultados</role>
<role>redação e revisão crítica do conteúdo do manuscrito</role>
<role>aprovaram a versão final do manuscrito e são responsáveis por todos os seus aspectos incluindo a garantia de sua precisão e integridade</role>
</contrib>
<contrib contrib-type="author">
<contrib-id contrib-id-type="orcid">0009-0003-0181-2414</contrib-id>
<name><surname>Ferreira</surname><given-names>Guilherme de Oliveira</given-names></name>
<xref ref-type="aff" rid="aff2"><sup>2</sup></xref>
<role>contribuiu na revisão final do manuscrito</role>
<role>aprovaram a versão final do manuscrito e são responsáveis por todos os seus aspectos incluindo a garantia de sua precisão e integridade</role>
</contrib>
<contrib contrib-type="author">
<contrib-id contrib-id-type="orcid">0009-0003-3800-2984</contrib-id>
<name><surname>Oliani</surname><given-names>Caio Henrique Peres</given-names></name>
<xref ref-type="aff" rid="aff1"><sup>1</sup></xref>
<role>contribuíram na análise e interpretação dos dados</role>
<role>redação do conteúdo do manuscrito</role>
<role>aprovaram a versão final do manuscrito e são responsáveis por todos os seus aspectos incluindo a garantia de sua precisão e integridade</role>
</contrib>
<contrib contrib-type="author">
<contrib-id contrib-id-type="orcid">0000-0003-2099-0323</contrib-id>
<name><surname>Barboza</surname><given-names>Guilherme Novoa Colombo</given-names></name>
<xref ref-type="aff" rid="aff1"><sup>1</sup></xref>
<role>contribuíram na revisão crítica do conteúdo do manuscrito</role>
<role>aprovaram a versão final do manuscrito e são responsáveis por todos os seus aspectos incluindo a garantia de sua precisão e integridade</role>
</contrib>
<contrib contrib-type="author">
<contrib-id contrib-id-type="orcid">0000-0001-7573-885X</contrib-id>
<name><surname>Barboza</surname><given-names>Marcello Novoa Colombo</given-names></name>
<xref ref-type="aff" rid="aff1"><sup>1</sup></xref>
<role>contribuíram na revisão crítica do conteúdo do manuscrito</role>
<role>aprovaram a versão final do manuscrito e são responsáveis por todos os seus aspectos incluindo a garantia de sua precisão e integridade</role>
</contrib>
<contrib contrib-type="author">
<contrib-id contrib-id-type="orcid">0000-0002-3107-6732</contrib-id>
<name><surname>Nogueira</surname><given-names>Priscilla Fernandes</given-names></name>
<xref ref-type="aff" rid="aff1"><sup>1</sup></xref>
<role>contribuíram na revisão crítica do conteúdo do manuscrito</role>
<role>aprovaram a versão final do manuscrito e são responsáveis por todos os seus aspectos incluindo a garantia de sua precisão e integridade</role>
</contrib>
<aff id="aff1">
<label>1</label>
<institution content-type="orgname">Hospital Oftalmológico Visão Laser</institution>
<addr-line>
<named-content content-type="city">Santos</named-content>
<named-content content-type="state">SP</named-content>
</addr-line>
<country country="BR">Brasil</country>
<institution content-type="original">Hospital Oftalmológico Visão Laser, Santos, SP, Brasil.</institution>
</aff>
<aff id="aff2">
<label>2</label>
<institution content-type="orgname">Universidade de Brasília</institution>
<addr-line>
<named-content content-type="city">Brasília</named-content>
<named-content content-type="state">Distrito Federal</named-content>
</addr-line>
<country country="BR">Brasil</country>
<institution content-type="original">Universidade de Brasília, Brasília, Distrito Federal, Brasil.</institution>
</aff>
</contrib-group>
<author-notes>
<corresp id="c1"><label>Autor correspondente:</label> Camyla Lemos Budib E-mail: <email>camylaabudib@gmail.com</email></corresp>
<fn fn-type="coi-statement"><label>Conflitos de interesse:</label><p>não há conflitos de interesses.</p></fn>
<fn fn-type="edited-by"><label>Editor associado:</label><p>Ruiz Simonato Alonso Universidade Federal Fluminense, Niterói, RJ, Brasil <ext-link ext-link-type="uri" xlink:href="https://orcid.org/0000-0002-6191-8339">https://orcid.org/0000-0002-6191-8339</ext-link></p></fn>
</author-notes>
<pub-date publication-format="electronic" date-type="pub">
<day>03</day>
<month>06</month>
<year>2026</year></pub-date>
<pub-date publication-format="electronic" date-type="collection">
<year>2026</year></pub-date>
<volume>85</volume>
<elocation-id>e0050</elocation-id>
<history>
<date date-type="received">
<day>07</day>
<month>07</month>
<year>2025</year>
</date>
<date date-type="accepted">
<day>19</day>
<month>12</month>
<year>2025</year>
</date>
</history>
<permissions>
<copyright-statement>Copyright ©2026</copyright-statement>
<copyright-year>2026</copyright-year>
<copyright-holder>The Author(s)</copyright-holder>
<license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/" xml:lang="en">
<license-p>All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License</license-p>
</license>
</permissions>
<abstract>
<title>RESUMO</title>
<p>O glaucoma de pressão normal é uma neuropatia óptica glaucomatosa que ocorre na ausência de hipertensão intraocular e cuja fisiopatogênese não é exclusivamente dependente do fator pressórico. Mecanismos extrínsecos, como disfunção autonômica e alterações hemodinâmicas microvasculares, têm sido implicados em sua progressão, destacando-se a apneia obstrutiva do sono. Relata-se o caso de um paciente com glaucoma de pressão normal e apneia obstrutiva do sono grave confirmada por polissonografia, que apresentou perda estrutural e funcional progressiva sob pressão intraocular controlada. O relato reforça a importância do rastreio e manejo interdisciplinar da apneia obstrutiva do sono como parte da abordagem diagnóstica e terapêutica do glaucoma de pressão normal.</p>
</abstract>
<trans-abstract xml:lang="en">
<title>ABSTRACT</title>
<p>Normal-tension glaucoma (NTG) is a glaucomatous optic neuropathy that occurs in the absence of intraocular hypertension, and its pathophysiology is not solely dependent on pressure-related factors. Extrinsic mechanisms, such as autonomic dysfunction and microvascular hemodynamic alterations, have been implicated in its progression, with obstructive sleep apnea (OSA) standing out as an important contributing factor. We report the case of a patient with NTG and severe OSA confirmed by polysomnography, who exhibited progressive structural and functional loss despite controlled intraocular pressure. This case highlights the importance of screening and interdisciplinary management of OSA as part of the diagnostic and therapeutic approach to NTG.</p>
</trans-abstract>
<kwd-group xml:lang="pt">
<title>Descritores:</title>
<kwd>Apneia obstrutiva do sono</kwd>
<kwd>Glaucoma</kwd>
<kwd>Doenças do nervo óptico</kwd>
<kwd>Polissonografia</kwd>
</kwd-group>
<kwd-group xml:lang="en">
<title>Keywords:</title>
<kwd>Sleep apnea</kwd>
<kwd>obstructive</kwd>
<kwd>Glaucoma</kwd>
<kwd>Optic nerve diseases</kwd>
<kwd>Polissonografia</kwd>
</kwd-group>
<funding-group>
<funding-statement><bold>Fonte de auxílio à pesquisa:</bold> trabalho não financiado. </funding-statement>
</funding-group>
<counts>
<fig-count count="5"/>
<table-count count="0"/>
<equation-count count="0"/>
<ref-count count="23"/>
</counts>
</article-meta>
</front>
<body>
<sec sec-type="intro">
<title>INTRODUÇÃO</title>
<p>O glaucoma é a principal causa de cegueira irreversível no mundo, com mais de 76 milhões de indivíduos afetados, número que pode ultrapassar 111 milhões até 2040.<sup>(<xref ref-type="bibr" rid="B1">1</xref>)</sup> O glaucoma de pressão normal (GPN) é uma forma particular de glaucoma primário de ângulo aberto, em que ocorrem a perda progressiva de fibras da camada de células ganglionares da retina e a escavação do disco óptico, mesmo com pressões intraoculares ≤ 21 mmHg.<sup>(<xref ref-type="bibr" rid="B2">2</xref>,<xref ref-type="bibr" rid="B3">3</xref>)</sup> A fisiopatogênese do GPN é multifatorial, envolvendo alterações na autorregulação vascular do nervo óptico, hipoperfusão crônica e comorbidades sistêmicas.<sup>(<xref ref-type="bibr" rid="B4">4</xref>-<xref ref-type="bibr" rid="B6">6</xref>)</sup> Entre estas, destaca-se a apneia obstrutiva do sono (AOS), caracterizada por episódios recorrentes de colapso das vias aéreas superiores durante o sono, com hipóxia intermitente, ativação simpática e variação hemodinâmica.<sup>(<xref ref-type="bibr" rid="B7">7</xref>)</sup> Estudos populacionais indicam prevalência elevada de AOS em adultos, especialmente em homens e idosos.<sup>(<xref ref-type="bibr" rid="B7">7</xref>,<xref ref-type="bibr" rid="B8">8</xref>)</sup> Evidências crescentes sugerem associação significativa entre AOS e glaucoma, sobretudo GPN, pela influência de hipóxia e instabilidade vascular na perfusão do nervo óptico.<sup>(<xref ref-type="bibr" rid="B9">9</xref>-<xref ref-type="bibr" rid="B11">11</xref>)</sup> Relatos com documentação seriada estrutural e funcional sob pressão intraocular (PIO) controlada e confirmação objetiva de AOS severa são úteis para reforçar condutas de triagem e manejo integrado.</p>
<p>Relata-se o caso de um paciente com GPN e AOS grave confirmada por polissonografia, que apresentou perda estrutural e funcional progressiva sob pressão intraocular controlada.</p>
</sec>
<sec sec-type="cases">
<title>RELATO DO CASO</title>
<p>Relato de caso clínico descritivo de paciente acompanhado entre 2023 e 2025, diagnosticado com GPN e AOS grave. Realizaram-se: acuidade visual (AV), biomicroscopia, gonioscopia, tonometria de aplanação, paquimetria ultrassônica, retinografia, tomografia de coerência óptica (OCT) de camada de fibras nervosas da retina (RNFL) e complexo de células ganglionares e plexiforme interna (GCIPL), campimetria 24-2 e 10-2 em visitas seriadas.</p>
<p>A AOS foi avaliada por polissonografia noturna (PSG) com índice de apneia-hipopneia (IAH), dessaturações e eficiência do sono. Os padrões pressóricos foram obtidos por monitorização ambulatorial da pressão arterial de 24 horas (MAPA-24 horas), considerando <italic>dipping</italic> conforme percentuais de queda noturna da pressão arterial média (PAM). O diagnóstico de GPN seguiu critérios clínicos de neuropatia óptica glaucomatosa, com PIO ≤ 21 mmHg e ângulo aberto à gonioscopia. Não foi realizada curva tensional diurna, o que constitui limitação do relato. O estudo foi aprovado pelo Comitê de Ética em Pesquisa da Irmandade Santa Casa de Misericórdia de Santos (parecer 7.679.869, CAAE: 89806825.4.0000.0139). O paciente assinou Termo de Consentimento Livre e Esclarecido.</p>
<p>Paciente do sexo masculino, 58 anos, etnia asiática, sem histórico familiar de glaucoma, foi encaminhado em 2023 para avaliação devido à escavação papilar aumentada detectada em exame oftalmológico de rotina. Referia AV preservada e ausência de sintomas visuais. No exame inicial, apresentava AV mais bem corrigida de 20/25 em ambos os olhos (AO), PIO medida por tonometria de aplanação de 16 mmHg no olho direito (OD) e 18 mmHg no olho esquerdo (OE), biomicroscopia sem alterações, cristalinos transparentes e fundo de olho com escavação aumentada (0,9-0,9) e notch inferior bilateral, conforme evidenciado na retinografia (<xref ref-type="fig" rid="f1">Figura 1</xref>).</p>
<fig id="f1">
<label>Figura 1</label>
<caption><title>Retinografia colorida (2023) de olho direito (OD) e olho esquerdo (OE) evidenciando escavação papilar de 0,9–0,9 com notch inferior bilateral.</title></caption>
<graphic xlink:href="0034-7280-rbof-85-e0050-gf01.tif"/>
</fig>
<p>Os campos visuais 10-2 iniciais demonstraram ausência de alterações significativas em ambos os olhos (<xref ref-type="fig" rid="f2">Figura 2</xref>), enquanto a OCT do nervo óptico revelou perda difusa de fibras nervosas peripapilares em ambos os olhos, compatível com dano glaucomatoso (<xref ref-type="fig" rid="f3">Figura 3</xref>). A paquimetria ultrassônica mostrou córneas finas – 465 µm (OD) e 454 µm (OE) —, o que pode levar à subestimação da PIO real.</p>
<fig id="f2">
<label>Figura 2</label>
<caption><title>Campimetria 10-2 (2023) demonstrando ausência de alterações significativas em ambos os olhos (OD e OE).</title></caption>
<graphic xlink:href="0034-7280-rbof-85-e0050-gf02.tif"/>
</fig>
<fig id="f3">
<label>Figura 3</label>
<caption><title>Tomografia de coerência óptica (OCT) do nervo óptico (2023) mostrando perda difusa de fibras nervosas peripapilares (RNFL) em OD e OE, compatível com dano glaucomatoso inicial.</title></caption>
<graphic xlink:href="0034-7280-rbof-85-e0050-gf03.tif"/>
</fig>
<p>Após perda de seguimento por aproximadamente 2 anos, o paciente retornou em 2025, mantendo AV estável e PIO de 13 mmHg em ambos os olhos. À fundoscopia, persistia escavação 0,9-0,9 com <italic>notch</italic> inferior bilateral. Os campos visuais 10-2 (Mira II) mostraram presença de escotomas superiores e inferiores em ambos os olhos (<xref ref-type="fig" rid="f4">Figura 4</xref>), enquanto a OCT de nervo óptico evidenciou perda adicional de fibras, sobretudo nos quadrantes inferior e temporal (<xref ref-type="fig" rid="f5">Figura 5</xref>), indicando progressão estrutural e funcional sob PIO controlada.</p>
<fig id="f4">
<label>Figura 4</label>
<caption><title>Campimetria 10-2 (Mira II, 2025) revelando escotomas superiores e inferiores em ambos os olhos, caracterizando progressão funcional sob PIO controlada.</title></caption>
<graphic xlink:href="0034-7280-rbof-85-e0050-gf04.tif"/>
</fig>
<fig id="f5">
<label>Figura 5</label>
<caption><title>Tomografia de coerência óptica (OCT) do nervo óptico (2025) demonstrando afinamento progressivo das fibras nervosas (RNFL) em comparação ao exame inicial de 2023, confirmando progressão estrutural.</title></caption>
<graphic xlink:href="0034-7280-rbof-85-e0050-gf05.tif"/>
</fig>
<p>A polissonografia confirmou AOS grave, com IAH de 45 eventos por hora, totalizando 220 episódios de apneia, 144 dessaturações e eficiência do sono de 58,4% (valor de referência &gt; 85%), além de saturação mínima de oxigênio (SaO<sub>2</sub>) de 78%. O MAPA-24 horas demonstrou PAM diurna de 120 mmHg e noturna de 97 mmHg, caracterizando padrão <italic>dipper</italic> com queda noturna de 19%.</p>
<p>Foi prescrita bimatoprosta 0,01% visando à potencial redução adicional da PIO e ao encaminhamento à otorrinolaringologia, para avaliação quanto à necessidade de terapia com pressão positiva contínua nas vias aéreas (CPAP). Cerca de 1 mês após o início do tratamento, o paciente retornou em uso regular de bimatoprosta 0,01%, apresentando PIO de 10 mmHg em ambos os olhos, medida em horário diurno. A avaliação otorrinolaringológica confirmou a indicação de CPAP, cujo início foi programado para o mesmo mês, com acompanhamento da equipe de medicina do sono.</p>
<p>O paciente permanece em acompanhamento oftalmológico e interdisciplinar, com controle pressórico e respiratório monitorados e reavaliação programada para 3 meses, a fim de detectar possíveis novas alterações estruturais ou funcionais compatíveis com progressão da neuropatia óptica glaucomatosa normotensiva.</p>
</sec>
<sec sec-type="discussion">
<title>DISCUSSÃO</title>
<p>O caso ilustra a progressão estrutural e funcional do GPN sob PIO em nível alvo, associada à AOS grave. A ocorrência de dano estrutural precedendo a perda funcional é um achado frequente no GPN,<sup>(<xref ref-type="bibr" rid="B3">3</xref>,<xref ref-type="bibr" rid="B5">5</xref>)</sup> refletindo a suscetibilidade individual do nervo óptico à perfusão reduzida e às alterações microvasculares. Embora picos tensionais possam contribuir para a progressão, outros fatores extrínsecos, como hipotensão noturna, disfunção autonômica e hipóxia intermitente, exercem papel crucial na fisiopatogênese da neuropatia óptica glaucomatosa normotensiva.<sup>(<xref ref-type="bibr" rid="B12">12</xref>-<xref ref-type="bibr" rid="B14">14</xref>)</sup></p>
<p>A AOS é reconhecida como um cofator sistêmico relevante na progressão do GPN. A hipóxia recorrente e a variabilidade hemodinâmica associadas ao distúrbio respiratório do sono comprometem a perfusão do nervo óptico, promovendo estresse oxidativo, disfunção endotelial e desequilíbrio na autorregulação vascular.<sup>(<xref ref-type="bibr" rid="B9">9</xref>)</sup> Metanálises confirmam risco significativamente aumentado de glaucoma em indivíduos com AOS.<sup>(<xref ref-type="bibr" rid="B10">10</xref>,<xref ref-type="bibr" rid="B15">15</xref>)</sup> Em pacientes com GPN, o padrão de <italic>nocturnal dipping</italic> excessivo da PAM está relacionado à progressão dos defeitos de campo visual.<sup>(<xref ref-type="bibr" rid="B16">16</xref>)</sup> Nesse contexto, o MAPA-24 horas representa ferramenta valiosa para identificar padrões de hipotensão noturna potencialmente deletérios à perfusão do nervo óptico e, consequentemente, ao prognóstico da doença.<sup>(<xref ref-type="bibr" rid="B17">17</xref>-<xref ref-type="bibr" rid="B19">19</xref>)</sup> A terapia com CPAP constitui abordagem eficaz para reduzir hipóxia e instabilidade hemodinâmica, embora possa causar elevação transitória da PIO em parte dos pacientes, motivo pelo qual se recomenda acompanhamento individualizado.<sup>(<xref ref-type="bibr" rid="B20">20</xref>-<xref ref-type="bibr" rid="B22">22</xref>)</sup> Evidências recentes demonstram que, apesar dessa elevação pressórica inicial, o uso prolongado do CPAP associa-se à menor probabilidade de desenvolvimento e progressão do glaucoma em coortes de longo prazo.<sup>(<xref ref-type="bibr" rid="B23">23</xref>)</sup></p>
<p>Entre as limitações deste relato, destacam-se a ausência de curva tensional diurna e noturna, o seguimento curto após o início do tratamento com CPAP, a falta de dados objetivos de adesão à terapia e a indisponibilidade de percentuais detalhados de <italic>dipping</italic> no exame de MAPA. Além disso, as imagens obtidas por OCT devem ser interpretadas considerando a possível subestimação da PIO decorrente da paquimetria fina observada no paciente.</p>
<p>Do ponto de vista clínico-prático, esse caso reforça que, em pacientes com GPN que apresentam progressão estrutural ou funcional sob PIO em nível alvo, a investigação ativa de AOS deve ser incorporada à abordagem diagnóstica. A confirmação por polissonografia e o manejo conjunto entre oftalmologia, medicina do sono e cardiologia são fundamentais para o controle global do risco vascular e neurodegenerativo. O uso do CPAP, quando indicado, pode beneficiar a hemodinâmica noturna, mas requer vigilância pressórica contínua. Assim, o mapeamento da hipotensão noturna e a otimização individualizada da meta de PIO permanecem pilares essenciais na estratégia terapêutica do GPN.</p>
</sec>
</body>
<back>
<fn-group>
<fn fn-type="financial-disclosure" id="fn1"><label>Fonte de auxílio à pesquisa:</label><p>trabalho não financiado.</p></fn>
<fn fn-type="other" id="fn2"><label>Instituição de realização do trabalho:</label><p>Hospital Oftalmológico Visão Laser, Santos, SP, Brasil.</p></fn>
</fn-group>
<sec sec-type="data-availability" specific-use="data-in-article">
<title>Disponibilidade dos dados da pesquisa:</title>
<p>Os conjuntos de dados gerados e/ou analisados durante o estudo atual estão incluídos no manuscrito.</p>
</sec>
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