I don't work in the field, but I've found this material to be informative: https://www.visiononline.org/certified-vision-professional-basic-training https://www

I don't work in the field, but I've found this material to be informative: https://www.visiononline.org/certified-vision-professional-basic-training https://www.visiononline.org/certified-vision-professional-b...