Exposing the LASIK Scam

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 Post subject: contrast sensitivity
PostPosted: Sat Oct 07, 2006 6:51 pm 
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Joined: Sat Mar 04, 2006 8:13 pm
Posts: 168
http://www.escrs.org/PUBLICATIONS/EUROT ... tivity.pdf

?Concerns over contrast sensitivity and
degradation of night vision are issues that
come to the attention of doctors who are
doing refractive surgery.We?re looking for
a good metric to use to assess the quality
of vision,? he said."


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 Post subject: Lasik robs your contrast
PostPosted: Sat Oct 07, 2006 11:45 pm 
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Joined: Fri Feb 17, 2006 2:57 am
Posts: 243
Because lasik induces HOAs and creates an oblate cornea, vitrually everyone loses contrast.

_________________
Lasik damages every eye! Lasik induces more aberrations, even so called "wavefront!" Stick to glasses!


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 Post subject:
PostPosted: Sat Feb 24, 2007 10:24 pm 
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http://www.escrs.org/PUBLICATIONS/EUROT ... ytests.pdf

?There is a case to be made for contrast
sensitivity testing to be included as a
routine examination before and after
refractive procedures such as LASIK and
PRK,? said Dr Krueger, speaking at a special
Clinical Research Symposium on ?What
needs to be measured in refractive
surgery?? held during the XXIV Congress ofthe ESCRS."



http://www.vectorvision.com/html/educat ... rgery.html

"Glare and Contrast Sensitivity Evaluation for Refractive Surgery:
Many patients complain of glare after refractive surgery and it is tempting to test these patients with a glare test in order to assess the quality of vision. However, glare testing, which shines a bright light in the patient's eye, reduces pupil size and typically causes vision to improve. The graph below shows the results of a patient tested for contrast sensitivity in darkness and then again with glare. Note that the glare condition dramatically improves the contrast sensitivity. It is not recommended that LASIK patients be tested with a high-luminance glare test to quantify the quality of vision."

"Recommended Test Conditions to Evaluate Vision Quality Following LASIK:Patients should be tested for contrast sensitivity, both in a well-lit room and in a darkened room. Test the patient with the CSV-1000 (either using the contrast sensitivity test face, the CSV-1000E, or one of the low contrast acuity test faces, the CSV-1000CVA or CSV-1000ETDRS10%.) in a room with all of the lights on. Then retest the patient with all of lights turned off in the room. The change in contrast sensitivity from the light to the dark condition provides information concerning the true quality of vision."



http://www.ascrs.org/publications/jcrs/ ... html#boxer

"Contrast sensitivity is likely a more sensitive indicator of visual function than acuity in refractive surgery."


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