Contact Lens | 合法醫療器材資訊網

2019年12月13日—2.3SoftLensManufacture.Therearethreemajorprocessesthatareusedinthemanufacturingofsoftlenses:lathecutting,spincasting,andcast ...

As an extensively used vision correction device, the contact lens is a type of soft matter that improves people’s quality of life. Although not popular until the 20th century, the theory of the contact lens has been developed since the 16th century. The first practical version was made from glass. Then, different types of materials, especially polymers were widely researched and utilised in research and productions. There are two major types of the contact lens in today’s market: soft contact lens made from hydrogel and the rigid contact lens that is not flexible. The former has highly hydrophilic structure whilst the latter tend to be hydrophobic. The materials and manufacturing processes are discussed in this report, along with the development of techniques and evolvement of materials.

As an alternative to glasses, the contact lens is a portable, lightweight lens that can be applied directly on the eye to correct visual defects. There are two...