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Alaska Blind Child Discovery

A cooperative, charitable research project to vision screen every preschool Alaskan

iPhone Photoscreening

  The iPhone 4 (and iPod touch) has a small flash very close to the small 5-8 megapixel camera. From a distance of 3-5 feet, it is capable to generating a good photoscreen. Unfortunately, the default fuction is always to have red-eye reduction pre-Flash that constricts the pupils moments before the image is taken. (GoCheckKids- An APP that over-rides the pre-Flash, could also find and interpret photoscreen crescents)  
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  iPhoneAniso iPhone4  
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Arnold RW, Davis B, Arnold LE, Rowe KS, Davis JM: Calibration and validation of nine objective vision screeners with contact lens-induced anisometropia. J Pediatr Ophthalmol Strabismus 2013, 50(3):184-190.  


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