Q. What is meant by the “cor’nea of the eye?”
A. All the outside of the visible part of the eye-ball.
The curve A B C is called the cor'nea.
If this curve be too prominent (or convex), the eye is near-sighted.
If too flat (or concave), the eye is far-sighted.
Q. What is meant by the “ret’ina of the eye?”
A. The net-work which lines the back of the eye, is so called.
The net-work ABC is called the ret'ina, and the projecting part DEF is called the cor'nea.
Q. What sort of glasses do near-sighted persons wear?