|
Assessment Of The Nerve Fiber Layer Thickness After Lasik
[Assessment of the nerve fiber layer thickness after LASIK using scanning laser polarimetry with variable corneal compensation]
Author: Abitbol O , Duong MH , Hoang-Xuan T , Gatinel D , Lachkar Y
Source: J Fr Ophtalmol, 30(5): 503-9 2007
Summary of Research:
AIM: To evaluate the reliability of scanning laser polarimetry with variable corneal compensation after laser-assisted in-situ keratomileusis (LASIK).
The methods used in the research:
Thirty-six eyes of 18 consecutive patients who had LASIK where included in the study. For each eye, one scanning laser polarimetry with variable corneal compensation (GDxVCC) was performed before LASIK (GDx no 1). One month after surgery, two other scanning laser polarimetry procedures were performed: one used the corneal compensation measured preoperatively (GDx no 2) and one used a new corneal compensation, measured postoperatively (GDx no 3). The values measured preoperatively were compared first to the values obtained postoperatively with GDx no 2, then to the values obtained postoperatively
LASIK: Revolutionising correction of refractive errors
LASIK, an unprecedented advancement in eye care, offers people a safe and simple opportunity to see the world clearly, minus the inconvenience or discomfort of scratched or lost contact lenses, or the blocked side vision of spectacles. In simple term LASIK is a revolutionary laser technique for correction of refractive errors.
LASIK surgery works wonders for Packers' Ferguson
Ferguson said he went to three doctors seeking a panacea for the headaches. One suggested that LASIK surgery probably would solve his eye problem and just might curb the headaches.
New, Improved LASIK Surgery
Just how much better this new ?wavefront-guided LASIK? works isn't proven yet, but it's causing excitement among eye surgeons who say the three-dimensional maps let them customize treatment in a way never before possible.
Opening Your Eyes To LASIK
More and more people are going under the laser to shed their glasses and contact lenses. So the Eye Surgery Education Council has issued new guidelines to help patients determine whether they could be candidates for laser eye surgery.
BLADE-FREE LASIK SURGERY
Are you near-sighted? Far-sighted? LASIK eye surgery could rid you of your glasses. But if fear of going under the blade is stopping you -- stop worrying. Now, a new blade-free approach.
Low-Cost LASIK Surgery
This year, it's estimated that more than 1½ million people will have corrective laser eye surgery and the price of that surgery can vary tremendously, but cheaper is not always better.
Research warns against sleeping in contact lenses
Sleeping in contact lenses can lead to an increased risk of severe eye infection, new research suggests. But new generation contact lenses, the investigation reveals, perform better in this regard than their predecessors. The University of Manchester study found that wearers who failed to remove their lenses before bedtime had an increased risk of developing keratitis than those who routinely took out their lenses before going to sleep
Corneal Perforation With Secondary Congenital Aphakia in Peters Anomaly -
To describe two cases of secondary congenital aphakia in association with Peters anomaly...Conclusions: Secondary congenital aphakia from corneal perforation should be considered in the presentation of severe Peters anomaly.
Bacterial Populations on Silicone Hydrogel and Hydrogel Contact Lenses after Swimming in a Chlorinated Pool
Conclusion: It appears that wearing a hydrophilic lens while swimming allows accumulation of microbial organisms on or in the lens, regardless of lens material. Swimmers should be advised to wear tight-fitting goggles if lenses are worn while swimming, and thorough disinfection of the lenses before overnight wear seems prudent...
with GDx no 3 (Wilcoxon test).
Results & Conclusion:
When corneal compensation was re-measured postoperatively (GDx no 3), the measurements were reliable for 35 eyes (97%). We found no significant differences between the preoperative and postoperative values except for the NFI (p=0.032). When the preoperative corneal compensation value was used in the postoperative measurements (GDx no 2), the exam was not reliable for 13 eyes, and it could not be performed at all for two eyes. For the remaining eyes, the values of four parameters were significantly modified: superior thickness (p=0.03), superior ratio (p=0.0005), inferior ratio (p=0.009), and ellipse modulation (p=0.39). The values of the other parameters (average thickness and inferior average) remained unchanged.
The researchers concluded:
The use of a preoperative customized corneal compensation for the realization of post-LASIK measurements does not provide reliable results. The GDxTMVCC can be considered a reliable tool after LASIK only when the corneal compensation is re-evaluated postoperatively.
|
