Explanation
Also known as "contact lenses". It is directly attached to the corneal surface. It is used to correct irregular refractive surfaces and treat corneal diseases. The materials used for contact lens shall have the following characteristics: excellent optical properties, high oxygen permeability, wettability, anti pollution, and easy to clean and sterilize. contact lenses are mainly divided into hard and soft lenses. In addition to correcting corneal refraction, contact lens can also release drugs to treat ophthalmic diseases.
Classification
Biomedical materials -> Artificial Organs