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Combinación de señales para la percepción de profundidad en la degeneración macular: el paralaje de movimiento

Jade Guénot^1,2, Preeti Verghese^1,3

¹Smith-Kettlewell Eye Research Institute, San Francisco, CA, USA.

Journal of vision

|January 22, 2026

Resumen

El paralaje de movimiento ayuda a mejorar la percepción de profundidad en personas con degeneración macular (DM) al compensar la pérdida de visión. La combinación de esta señal con la disparidad binocular ofrece beneficios significativos, especialmente para aquellos con pérdida del campo central (PCC).

Área de la Ciencia:

Ciencia de la visión; Neurociencia; Oftalmología

Sus antecedentes:

La degeneración macular (DM) afecta significativamente la percepción de profundidad, afectando particularmente la disparidad binocular debido a la pérdida del campo central (PCC).
Las señales monoculares, como el paralaje de movimiento, pueden permanecer funcionales a pesar de la pérdida de visión.
Comprender la integración de señales es crucial para desarrollar ayudas visuales para pacientes con DM.

Objetivo del estudio:

Investigar si la combinación de paralaje de movimiento y disparidad binocular mejora la percepción de profundidad en personas con DM.
Determinar si esta combinación compensa los déficits de percepción de profundidad causados por la PCC.
Explorar cómo las características del escotoma influyen en la integración de señales en la DM.

Principales métodos:

Once participantes con DM y 19 controles juzgaron la profundidad en una corrugación definida por disparidad y/o paralaje de movimiento.
Se midieron los umbrales de percepción de profundidad para señales individuales y su combinación.
Se analizó el rendimiento en relación con el tamaño y las características del escotoma.

Principales resultados:

Los participantes con DM y zonas extensas de ceguera estereoscópica mostraron una mejor percepción de la profundidad cuando el paralaje de movimiento se combinaba con la disparidad.
Aquellos con zonas más pequeñas de ceguera estereoscópica alcanzaron un rendimiento y una integración casi normales.
La capacidad de integración de señales en la DM depende de la disparidad binocular residual, y el paralaje de movimiento resulta ser una valiosa señal compensatoria.

Conclusiones:

Las personas con PCC conservan importantes capacidades de integración de señales de profundidad.
El paralaje de movimiento compensa eficazmente los déficits de percepción de profundidad en la DM.
Adaptar las estrategias visuales según las características individuales del escotoma es clave para mejorar la percepción de profundidad en la DM.

Palabras clave:

degeneración macular percepción de profundidad paralaje de movimiento disparidad binocular pérdida del campo central

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