Predicting visual sensitivity in retinal prosthesis patients.
Invest Ophthalmol Vis Sci
; 50(4): 1483-91, 2009 Apr.
Article
em En
| MEDLINE
| ID: mdl-19098313
ABSTRACT
PURPOSE:
With the long-term goal of restoring functional vision in patients with retinal degenerative diseases, the eyes of blind human subjects were implanted chronically with epiretinal prostheses consisting of two-dimensional electrode arrays that directly stimulated cells of the neural retina.METHODS:
Psychophysical techniques were used to measure the brightness of electrically generated percepts on single electrodes using a variety of electrical stimulation patterns.RESULTS:
It was possible to predict the sensitivity of the human visual system to a wide variety of retinal electrical stimulation patterns using a simple and biologically plausible model.CONCLUSIONS:
This is the first study to demonstrate that, on the single-electrode level, retinal electrical stimulation in humans can produce visual qualia that are predictable using a quantitative model, a prerequisite for a successful retinal prosthesis. (ClinicalTrials.gov number, NCT00279500.).
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Retina
/
Degeneração Retiniana
/
Percepção Visual
/
Cegueira
/
Implantação de Prótese
/
Eletrodos Implantados
Tipo de estudo:
Clinical_trials
/
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Humans
/
Middle aged
Idioma:
En
Revista:
Invest Ophthalmol Vis Sci
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Estados Unidos