Friday, April 17, 2009
Optics today- just amazing!
Egyptians simply rocks! They used "simple glass meniscal lenses" to magnify minute objects
back in 8th century BC. It’s been ages since Abbas Ibn Firnas, in the 9th century, used glasses to correct refractive error. Spectacles used to be bulky, heavy and a damn nuisance. True, true… Specs had been revolutionized in past few years. It’s become slimmer, thinner and more expensive too. But, gone are the days we think of thick glasses when you come with refractive error. We’ve got alternatives for you- and it’s pretty cool.
Tired of wearing thick specks or irritating contact lens? You may opt for refractive correction procedures like Laser Assissted In Situ Keratomileusis (LASIK), Photo Refractive Keratotomy (PRK), Intrasomal Corneal Ring (ICR) or Intra Ocular Lens (IOL), which may require more freedom and far better vision- indeed with cost of some money.
LASIK & PRK: Both uses laser techniques to smoothen and/or change the thickness of your cornea so that your vision is improved. Be it short-sightedness, long sightedness or even astigmatism, all can be corrected.
IOL: Heard of that Japanese guy who inserted USB into his finger? We can actually insert your specks into your eye and guess what? They won’t even know that you have it in your eye! Cool han?
ICR:These are 2 small, half rings plastic devices implanted in the peripheral part of cornea to correct vision. it's also called Intacs.