The transparent front layer of the human eye is called the:

1. The cornea is the curved transparent membrane at the front of the eye. 2. Most of the eye's refraction takes place at the cornea. 3. Retina is the light-sensitive back of the eye. 4. So the front transparent layer is the cornea. _Source: syllabus Science Ch 11 'Human Eye and the Colourful World'_