Eye Anatomy & Physiology: A Visual Guide Parts of the Eye Eye: Definition, How does it Work, Anatomy, and Functions Vision and Eye Diagram: How We See Eye Diagram Labeled Image at Robert Suarez blog Diagram of human eye anatomy with label illustration Stock Vector Image. RAHA means relax in arabic. This eye mask is for all those who have trouble falling (and staying) asleep. The eye mask is perfect for keeping your surroundings nice and dark and the weighted feeling on your eyes makes you feel extra sleepy. Also, you can warm or cool the eye mask!