Photorefraction Ocular Screening Device and Methods

Abstract

A photorefraction ocular screening device for assessing vision and corresponding disorders associated with the human ocular system is provided. More specifically, the present invention provides for a photorefraction ocular screening device employing advanced methods of pupil detection and refractive error analysis. The photorefraction ocular screening device is comprised of an LED arrangement configured with a plurality of irradiation sources serving as visual stimuli, wherein the visual stimuli may be presented in varying illumination patterns to the pupils of an examinee for expanding the range of ocular responses that can be used to determine refractive error.

1 - 49 . (canceled) 
     
     
         50 . A photorefraction ocular device, comprising:
 a single housing body;   an image capture component positioned within the single housing body, the image capture component being configured to capture one or more images of a pupil;   a lens component coupled to the image capture component;   a plurality of light sources coupled to the single housing body, the plurality of light sources being positioned to illuminate the pupil;   a speaker positioned within the single housing body, the speaker being configured to provide audible stimuli;   an operator display screen coupled to the single housing body, the operator display screen being configured to display the pupil; and   a processor positioned in the single housing body, the processor including processing logic programmed to locate the pupil, display the one or more images of the pupil on the operator display screen, and analyze the one or more images of the pupil to determine refractive error.   
     
     
         51 . The device of  claim 50 , wherein the single housing body is mobile. 
     
     
         52 . The device of  claim 50 , wherein the device is programmed to wirelessly transfer the one or more images of the pupil to a remote server. 
     
     
         53 . The device of  claim 50 , wherein the plurality of light sources is arranged in a lighting array. 
     
     
         54 . The device of  claim 53 , wherein a center position of said lighting array is aligned with an optical axis of said image capture component. 
     
     
         55 . The device of  claim 53 , wherein said lighting array includes a plurality of irradiation sources. 
     
     
         56 . The device of  claim 53 , wherein the lighting array is arranged in three concentric rings. 
     
     
         57 . The device of  claim 53 , further comprising a diffuser positioned in proximity to said lighting array.