Wednesday 4 August 2010

The Eyeball

The part of the eyeball that is visible (technical term is Sclera) is commonly called the ‘white of the eye’. However, a common mistake is to literally make it white. The eye ball is a round volume and it needs to be shaded like one. Depending on the light source, usually a gradient on one side or both will do the trick.
Shading the Iris, Cornea, and Pupil

Understanding the structure of these forms is important for when you start shading them. The pupil is easy. Its always a black dot on the iris. When we describe the color of someone’s eyes, we are describing the color of the iris. The iris must be shaded like a concave form. If the light source is from the top, the bottom of the iris will be lit. If the light source is from the left, the right side of the iris will be lit, and so on… The cornea will be the exact opposite, because it is a convex form. This is easier to understand with an image:

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