[48003] in Discussion of MIT-community interests
Quickly Search Information on Lasik
daemon@ATHENA.MIT.EDU (Lasik Eye Care)
Sun Aug 2 04:26:39 2015
Date: Sun, 2 Aug 2015 04:26:24 -0400
To: mit-talk-mtg@charon.mit.edu
From: Lasik Eye Care <lasikeyecare@dguric.eu>
Reply-to: Lasik Eye Care <lasikeyecare@dguric.eu>
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Quickly Search Information on Lasik
her-order aberrations" are visual problems that require special testing for dia
gnosis and are not corrected with normal spectacles (eyeglasses). These aberrat
ions include 'starbursts', 'ghosting', 'halos' and others.[23] Some patients desc
ribe these symptoms post-operativ 9j7 .ely and associate them j7.[ with the LASIK technique i
nclu 7ding the formation of the flap and t s9j7 .he tissue ablation.[24] The advancement of
the LASIK technology has reduced the risk of clinically significant visual impair
ment after surgery j7.[citation needed] There is a correlation between pupil size and
aberrationThis correlation may be the result of irregularity in the corneal ti
etween the untouched part of the cornea s9j7 . and the res rs9j7 .haped part. Daytime post-LAS
IK vision is optimal, since the pupil size is smaller than the LASIK flap. However, at
night, the pupil may dila 9j7 .te such that light passes through the edge of j7.[the LASIK flap wh
ich gives 9j7 . rise to aberrations. LASIK and 7 PRK may induce spherical aberration if the laser
under corrects as it moves outward from the centre of the treatment zone, especially when
major corrections are ey can be measured in micrometers (µm) whereas the smalles
t laser beam size approved by the FDA is about 1000 times larger, at 0.65 mm. In situ kerat
omileusis ef j7.[fected at a later age increases the incidence of corneal higher-order wavefront
aberrationsThese factors demonstrate the importance of careful patient selecti 9j7 .on for LASIK treatment.
VBritish National Health Service's National Institute fo 7r Health and Clinical Excellence (NIC
E) considered evidence of 7 the effectiv j7.[eness and the potential risks s9j7 .of the laser surgery sta
ting "current evidence suggests that photorefractive (laser) suvcrgery for the correction of r
efractive e s9j7 .rrors is safe and efficacious for use in appropriately selected patients. Clinici
ans undertaking photorefractive (laser) surgery for the correction of refractive errors should
ensure that patients understand the benefits and potential risks of the procedure. Risks inclu
de failure t j7.[o achieve the expected improvement in unaided vision, development of new visual di
sturbances, corneal s9j7 . infection and rs9j7 .hflap complications. These risks should be 7 weighed against t
hose of wearing spectacles or contact lensesThe FDA reports "Th
f refractive surgery for the correction of myopia, hyperopia, and as j7.[tigmatism. The LASIK surg
ery is 9j7 .[ performed by an ophthalmologist who uses a laser or microkeratome to reshape the eye's c
ornea in order to improve v 7isual acuityFor most patients, LASIK provides a permanent alter
native to eyeglasses or contact lenses
LASIK is most similar to another surgical corrective procedure, photorefractive keratectomy (PR
K), and both represent advances over radial keratotomy in the surgical treatment of refractive
errors of vision. For patients with moderate to high 7 myopia or thin corneas which cannot be tre
ated with LASIK and PRK, the phakic intraoc s9j7 .ular lens is an alternver
11 million LASIK procedures had been performed in the United Stamillion
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her-order aberrations" are visual problems that require special testing for dia
gnosis and are not corrected with normal spectacles (eyeglasses). These aberrat
ions include 'starbursts', 'ghosting', 'halos' and others.[23] Some patients desc
ribe these symptoms post-operativ r81 .ely and associate them 81.[ with the LASIK technique i
nclu 1ding the formation of the flap and t 2r81 .he tissue ablation.[24] The advancement of
the LASIK technology has reduced the risk of clinically significant visual impair
ment after surgery 81.[citation needed] There is a correlation between pupil size and
aberrationThis correlation may be the result of irregularity in the corneal ti
etween the untouched part of the cornea 2r81 . and the res x2r81 .haped part. Daytime post-LAS
IK vision is optimal, since the pupil size is smaller than the LASIK flap. However, at
night, the pupil may dila r81 .te such that light passes through the edge of 81.[the LASIK flap wh
ich gives r81 . rise to aberrations. LASIK and 1 PRK may induce spherical aberration if the laser
under corrects as it moves outward from the centre of the treatment zone, especially when
major corrections are ey can be measured in micrometers (µm) whereas the smalles
t laser beam size approved by the FDA is about 1000 times larger, at 0.65 mm. In situ kerat
omileusis ef 81.[fected at a later age increases the incidence of corneal higher-order wavefront
aberrationsThese factors demonstrate the importance of careful patient selecti r81 .on for LASIK treatment.
VBritish National Health Service's National Institute fo 1r Health and Clinical Excellence (NIC
E) considered evidence of 1 the effectiv 81.[eness and the potential risks 2r81 .of the laser surgery sta
ting "current evidence suggests that photorefractive (laser) suvcrgery for the correction of r
efractive e 2r81 .rrors is safe and efficacious for use in appropriately selected patients. Clinici
ans undertaking photorefractive (laser) surgery for the correction of refractive errors should
ensure that patients understand the benefits and potential risks of the procedure. Risks inclu
de failure t 81.[o achieve the expected improvement in unaided vision, development of new visual di
sturbances, corneal 2r81 . infection and x2r81 .hflap complications. These risks should be 1 weighed against t
hose of wearing spectacles or contact lensesThe FDA reports "Th
f refractive surgery for the correction of myopia, hyperopia, and as 81.[tigmatism. The LASIK surg
ery is r81 .[ performed by an ophthalmologist who uses a laser or microkeratome to reshape the eye's c
ornea in order to improve v 1isual acuityFor most patients, LASIK provides a permanent alter
native to eyeglasses or contact lenses
LASIK is most similar to another surgical corrective procedure, photorefractive keratectomy (PR
K), and both represent advances over radial keratotomy in the surgical treatment of refractive
errors of vision. For patients with moderate to high 1 myopia or thin corneas which cannot be tre
ated with LASIK and PRK, the phakic intraoc 2r81 .ular lens is an alternver
11 million LASIK procedures had been performed in the United Stamillion
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