自19世纪后期以来,视力不佳的人们便可通过佩戴隐形眼镜来提高他们的视力。在其问世之初,隐形眼镜是由玻璃制成的,仅可用于简单的视力矫正。如今的隐形眼镜则通常由塑料制成,而且可被塑造成较为复杂的形状,以满足散光患者和需要远近视两用眼镜的人群。还有着了色的隐形眼镜,可? Since the late 19th century, people with poor eyesight have been able to improve their vision by wearing contact lenses. At the time of its inception, contact lenses were made of glass and could only be used for simple vision correction. Today’s contact lenses are usually made of plastic and can be shaped into more complex shapes to cater for astigmatic patients and people who need both myopic and long-sighted glasses. There are also colored contact lenses.