1 of 5000

|

metal prints chart metal prints colour blindness metal prints eye test metal prints vision test metal prints colour metal prints medicine metal prints medical metal prints healthcare metal prints diagnostic metal prints diagnostics metal prints technique metal prints equipment metal prints eye metal prints ophthalmology metal prints ophthalmic metal prints

photographs chart photos colour blindness photos eye test photos vision test photos colour photos medicine photos medical photos healthcare photos diagnostic photos diagnostics photos technique photos equipment photos eye photos ophthalmology photos ophthalmic photos

Add This Artwork to Your Favorites Collection

Comment

Add This Artwork to Your Favorites Collection

Comment

Colour blindness chart. Fletcher-Hamblin colour vision test card. The card consists of five coloured dots arranged in a cross. Subjects are asked to identify which of the four outer dots has the most similar colour to the central dot. One of the outer dots is the correct answer. Another dot is deliberately disimilar and is used as a control to make sure the subject has understood the instructions. The choice of either of the other two by the subject would indicate a colour vision defect. This card is one of ten different colour combinations used in the Fletcher-Hamblin test. Colour blindness is a condition which causes confusion between red, green and yellow colours.

Science Photo Library (SPL) is the leading source of science images and footage. Sourced from scientific and medical experts, acclaimed photographers and renowned institutions, our content is unrivaled worldwide. Outstanding quality, accuracy and commitment to excellence are deeply embedded in our DNA. Science Photo Library inspires creative professionals and delivers engaging content of the highest quality for a wide range of clients in a variety of sectors. Visit sciencephoto.com for more information and stay connected on Twitter, LinkedIn, Instagram and Vimeo.