Can you convert a glasses prescription to a contact lens ... | 合法醫療器材資訊網

2019年4月3日—No–youcannotdirectlyconvertaglassesprescriptiontoacontactlensprescription.Equally,youcannotconvertacontactlensprescriptiontoa ...

Contact lenses prescriptions include certain specifications that are not part of a glasses prescription, these include:

Base curve: the base curve measures the curvature of the lens; it is determined by the actual shape of your eye and produces the right lens fitting.

Diameter: the lens diameter specifies the overall size of the lens. Along with the base curve, this determines how the lens fits on the eye.

Lens material: in days gone by, glasses were made from actual glass, nowadays, most glasses are made of a lightweight plastic. Contact lenses on the other hand, are made from a range of hydrogels. These are split into hydrogel or silicone hydrogel[1] contacts. How each lens fits and feels depends on each individual wearer’s eyes. Those with sensitive or dry eyes generally do better with silicone hydrogel contact lenses[2] as they allow a greater level of oxy...