Improved eye-fixation detection using polarization-modulated retinal birefringence scanning, immune to corneal birefringence.
Opt Express
; 22(7): 7972-88, 2014 Apr 07.
Article
en En
| MEDLINE
| ID: mdl-24718173
We present an improved method for remote eye-fixation detection, using a polarization-modulated approach to retinal birefringence scanning (RBS), without the need for individual calibration or separate background measurements and essentially independent of corneal birefringence. Polarization-modulated RBS detects polarization changes generated in modulated polarized light passing through a unique pattern of nerve fibers identifying and defining the retinal region where fixation occurs (the fovea). A proof-of-concept demonstration in human eyes suggests that polarization-modulated RBS has the potential to reliably detect true foveal fixation on a specified point with an accuracy of at least ± 0.75°, and that it can be applied to the general population, including individuals with sub-optimal eyes and young children, where early diagnosis of visual problems can be critical. As could be employed in an eye-controlled display or in other devices, polarization-modulated RBS also enables and paves the way for new and reliable eye-fixation-evoked human-machine interfaces.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Retina
/
Córnea
/
Fijación Ocular
/
Microscopía de Polarización
/
Fibras Nerviosas
Tipo de estudio:
Diagnostic_studies
/
Screening_studies
Límite:
Child
/
Humans
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2014
Tipo del documento:
Article
Pais de publicación:
Estados Unidos