Key-Presbyopia-Metrics_James-Wolffsohn-PhD Full size 504 × 251 pixels Key Presbyopia Metrics – James Wolffsohn, PhD Previous image Next image Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *CommentName* Email* Website Save my name, email, and site URL in my browser for next time I post a comment. Notify me of new posts by email.