Robert Ang, MD Full size 1598 × 1212 pixels Robert Ang, MD Influence of Astigmatism on Small-Aperture and Trifocal IOL Performance Previous image Next image Leave a Reply Cancel replyYour email address will not be published.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.