Silicone Hydrogel Contact Lenses | 合法醫療器材資訊網

Siliconehydrogelcontactlensesareadvancedsoftlensesthatallowmoreoxygentopassthroughthelenstothecorneathanregularsoft(hydrogel)contacts.

Silicone hydrogel contact lenses are advanced soft lenses that allow more oxygen to pass through the lens to the cornea[1] than regular soft ("hydrogel") contacts. In fact, silicone hydrogel lenses enable up to five times more oxygen to reach the cornea than regular hydrogel lenses.

Silicone hydrogel and regular hydrogel lenses both are made of plastics that are hard when dry but readily absorb water and become soft and gel-like when hydrated.

If youve ever let a soft or silicone hydrogel lens dry out, you know that it becomes deformed, hard and fragile. But if you soak it for a few minutes in contact lens solution[2], it becomes soft and pliable again.

In 2014, silicone hydrogel lenses accounted for 68 percent of contact lens fittings performed in the United States, compared with 24 percent for regular soft lenses, 6 percent for rigid gas permeable contacts[3] a...