Name the part of the human eye that helps in changing the focal length of the eye lens. Share with your friends Share 1 Jahirul Mazumder answered this Please refer the link below: https://www.meritnation.com/ask-answer/question/name-the-part-of-the-human-eye-that-helps-in-changing-the-fo/human-eye-and-colourful-world/800374 -1 View Full Answer Manuj Haritwal answered this iris -1 Manuj Haritwal answered this pupil -2