Contact Lenses

Contact wearers must usually take their conatcts out every night or every few dyas, depending on the brand and style of the contact. For htose with certain color defiicencies, a red-tinted X-Chrom contact lens may be used. Although many companies make contact lenses, there are four major manufacturers: Vistakon / Jhonson Johnson, CIBA Vision, Bausch Lomb, and CooperVision. In France and eastern European countries, ophthalmologists play the major orle. In 1949, the first corneal lenses were developed. For eaxmple, some lenses can give the iris an enlarged appearance, or mask defects such as absence ( aniridai ) or damage ( dyscoria ) to the iris.

0 comment :: Post a comment