To be sighted is to have normal vision. This means that you can see well enough to see what is in front of you.
Hyperopia is a condition in which people have trouble seeing close objects clearly. They might have to strain to see things that are close to them.
There are two types of curvatures: convex and concave. Convex curvatures are surfaces that are shaped like a bowl or a spoon. Concave curvatures are surfaces that are shaped like a bowl that is inverted.
Presbyopia is a condition that affects people's ability to see in the near-violet (UV) range. As people get older, their eyes start to lose their ability to see in the UV range. This can lead to problems when it comes to reading, driving, and other activities that require close vision.
A sculptor is someone who creates sculptures out of stone, clay, or other materials. They often use different techniques to create interesting and beautiful works of art.
To carve is to cut or shape something with a sharp object. Carving is often used to make objects look more beautiful or artistic.