Campo visual treinamento
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CAMPO VISUAL NO GLAUCOMA
Telma JustaCentro Visual Valter Justa
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www.centrovisual.com.br
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CAMPO VISUAL DE UM OLHO: TODO O ESPAÇO QUE PODE SER VISTO QUANDO DE OLHA FIXO PARA DETERMINADO
PONTO
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PERIMETRIA: possibilidade de se medir o campo visual em uma superfície curva, que mantém o ângulo visual constante independente do local pesquisado.
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HISTÓRICO 1945: Perímetros de
projeção (ex:Goldman) 1970: Perímetros
automáticos
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GOLDMANN HUMPHREY
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PERIMETRIA AUTOMATIZADA : Permite a realização da perimetria
estática de uma maneira altamente reprodutível
PERÍMETROS MAIS UTILIZADOS : Octopus ( Interzeag, Suiça ) Humphrey ( Humphrey Instruments,
EUA).
HUMPHREY
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Importância do Campo Visual
Diagnóstico de doenças como glaucoma, doenças neurológicas, ptose palpebral.
Acompanhamento.
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INICIANDO O EXAME Encaminhamento – história
clínica Refração, acuidade visual,
tamanho da pupila Ajuste do aparelho e da
sala: iluminação da cúpula, estratégias, tamanho dos estímulos, iluminação da sala, conforto.
Explicações ao paciente
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Durante o Exame
Observar se o paciente está atento ou sonolento
Observar fixação Observar se ele compreendeu as
explicações
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Nossos Aparelhos
Humphrey HFA Perimetria
acromática e azul amarela
Humphrey Matrix perimetria de
Frequência Dobrada
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CONCEITOS BÁSICOS Estímulos luminosos ( unidade relativa
de luminância: decibel dB) Quanto maior o limiar de sensibilidade de
um ponto, maior a sua expressão numérica em decibéis.
Quanto maior o número em decibéis de um ponto, menor a intensidade do estímulo luminoso correspondente naquela localidade.
Tamanho do estímulo Distância entre os pontos pesquisados
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ESTRATÉGIAS – Humphrey HFA II SITA E SITA FAST
Periférico 60-4 60 pontos centrais ptose
Central 30-2 76 30 centrais, pontos a cada 6°
Programa mais utilizado
Central 24-2 54 24 centrais, estendendo-se a 30 nasalmente pontos a cada 6°
Muito utilizado em glaucoma e pacientes idosos
Central 10-2 68 10 centrais, pontos a cada 2°
Pacientes com ilhota central
Mácula 16 4° centrais Acometimento área de fixação
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Humphrey Matrix
Screening N-30 24-2
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CENTRAL 24-2
CENTRAL 10-2
MACULAR
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RESULTADO IMPRESSO PELO PERÍMETRO- Particularidades.
Dados gerais Índices de
confiabilidade Gráficos Índices Globais GHT VFI
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Índices de Confiabilidade Perdas de Fixação Falsos Positivos Falsos Negativos
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GRÁFICOS
GRÁFICO NUMÉRICO
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GRÁFICOS GRÁFICOS DE
TONS CINZA (GRAY SCALE)
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GRÁFICOS TOTAL DEVIATION NUMÉRICO DE PROBABILIDADES
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GRÁFICOS
PATTERN DEVIATION NUMÉRICO DE PROBABILIDADES
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ÍNDICES GLOBAIS MEAN DEVIATION PATTERN STANDARD DEVIATION SHORT -TERM FLUCTUATION CORRECTED PATTERN STANDARD
DEVIATION
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GHT-GLAUCOMA HEMIFIELD TEST
WITHIN NORMAL LIMITS BORDERLINE OUTSIDE NORMAL LIMITS GENERAL REDUCTION OF SENSITIVITY ABNORMALLY HIGH SENSITIVITY
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CRITÉRIOS PARA DIAGNÓSTICO DE DEFEITOS GLAUCOMATOS
CRITÉRIOS DE CAPRIOLI Não rigoroso Moderadamente rigoroso
baixa de sensibilidade de 5 ou mais dB. Presença de 2 ou mais pontos adjacentes, cada um com baixa de
sensibilidade de 10 ou mais dB Diferenças de sensibilidade de 10 ou mais dB entre pontos siméricos do
lado nasa em pelo menos 2 pontos adjacentes Rigoroso
Critérios de Anderson Gráfico do Pattern Deviation mostrando 3 pontos adjacentes não periféricos
com p<5%, sendo que um deles com p<1%. CPSD com p<5% GHT – Borderline ou outside normal limits.
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DANO LOCALIZADO
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Progressão
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Aprendizado
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AVANÇOSSWAP ( BLUE YELLOW ) E SITA
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AVANÇOS
FDT (TECNOLOGIA DE FREQUÊNCIA DOBRADA)
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AVANÇOSFDT - TECNOLOGIA DE FREQUÊNCIA DOBRADA
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Correlação SITA e FDT
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Perda de Campo Visual - neurológico
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DANO GLAUCOMATOSO
CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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DANO DIFUSO
REDUÇÃO GERAL DA SENSIBILIDADE
18
21
24
CAMPO
VISUAL
NO
GLAUCOMA
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CAMPO
VISUAL
NO
GLAUCOMA
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DANO DIFUSO TÍPICOCAMPO
VISUAL
NO
GLAUCOMA
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DEFEITO TEMPORALCAMPO
VISUAL
NO
GLAUCOMA
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Correlacionar achados campimétricos com aspecto do disco óptico e retina
CAMPO
VISUAL
NO
GLAUCOMA