Gas Permeable Contacts

Gas permeable contact lenses are considered hard lenses, but should not be confused with the hard contact lenses of the past.  In the past, hard lenses were manufactured using the material polymethyl methacrylate, known as PMMA.  Previous to 1971, when the soft contact lens was introduced, almost all contact lenses were made using this material.  PMMA lenses were not easy to get use...
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RGP Contact Lenses Correct Vision Problems After Refractive Surgery

LASIK and other refractive surgery procedures are typically safe and effective.  But in some cases, undesired outcomes will occur - such as loss of best spectacle-corrected visual acuity, glare, haloes, ghost images, and reduced contrast sensitivity.  Additional surgery may not be possible or may not be able to correct these problems.  The purpose of this study was to evaluate the e...
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