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We list hundreds of Clinical Trials about "Avedro Announces Canadian Approval Lasik Xtra" on BioPortfolio. We draw our references from global clinical trials data listed on ClinicalTrials.gov and refresh our database daily.
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The objective of the study is to compare clinical outcomes from LASIK and SBK using FDA-approved laser technology on the same patient
To compare the performance of Oasys to Extreme H20 xtra 59 in dry eye contact lens pts who receive Restasis in 1 eye and vehicle (Endura) in the other eye.
Determine the flap thickness created by femtosecond laser or a mechanical microkeratome using in vivo confocal microscopy and compare measured versus intended flap thickness.
The study compares the precision and accuracy of two laser refractive techniques, PRK and LASIK, for correction of nearsightedness between -6 and -8 diopters.
Laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) are currently the 2 main refractive surgeries to correct myopia which are being performed worldwide, with more patients preferring LASIK to PRK because of better comfort and faster rehabilitation. However, in post-LASIK patients, there is a low risk of flap dislodgement. This risk increases with certain occupations which have a higher risk of trauma. Hence, there may be a role for PRK for people which s...
The purpose of this study is to evaluate the safety and efficacy of Epi-Lasik in U.S. Army personnel who have naturally occurring myopia with or without astigmatism. The data from this control group will be collected in such a way as to be comparable to data sets from study groups undergoing wavefront guided PRK, conventional PRK, and related laser refractive surgery procedures.
To evaluate the short-term changes in ocular surface measures and tear inflammatory mediators after lenticule extraction (FLEx), laser in situ keratomileusis (LASIK) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) procedures.
The aim of the study was to evaluate visual outcomes, contrast sensitivity, glare and induced high order aberrations induced by the new CustomVue software use for wavefront-guided LASIK.
The purpose of this study is to evaluate whether the size of the pupil has an effect on quality of vision in patients undergoing LASIK surgery.
The purpose of the study is to compare the results of LASIK surgery when using wavefront-guided excimer laser treatment compared to wavefront optimized excimer laser treatment in patients with nearsightedness with and without astigmatism
The aim of the study was to evaluate visual outcomes, contrast sensitivity, glare testing and high order aberrations induced by different laser technologies and to evaluate differences in aberrometer technology. We hypothesized that there will not be differences among conventional or wavefront guided treatments.
The purpose of the study is to evaluate the use of prophylactic tissue sealant to prevent epithelial ingrowth from gaining access under a LASIK flap with repeat LASIK surgery
In this study the investigators will be comparing two different types of anesthetic, a numbing eye drop and a numbing gel, to test if they are equally effective or if one has a better outcome in terms of the level of comfort you experience one hour and one day after your surgery. The two medications are commonly used and appear to be equally effective for other types of eye surgery, such as cataract surgery. This study will show if one type of anesthesia is preferred over anoth...
The purpose of this study is to evaluate the thickness accuracy of Laser-assisted in situ keratomileusis (LASIK) flaps created with the LenSx® Laser.
Aim of the work is to compare the results of femtosecond assisted LASIK and small incision lenticule extraction (SMILE) as regards safety, efficacy and predictability. As a secondary outcomes , the investigators will compare the results of both techniques on corneal biomechanics, dry eye measures, corneal asphericity and higher order aberration.
To determine the effect of two types of wavefront modalities (WFG vs. WFO) and two types of refractive surgery (PRK vs. LASIK) on visual and military task performance after laser refractive surgery.
Dry eye symptoms can occur after LASIK surgery. They generally get better with time but in some patients, they can persist. The investigators believe that in some individuals, dry eye symptoms after LASIK persist because the nerves in the cornea become hypersensitive. The investigators wish to study if a medication, called pregabalin, can protect corneal nerves at the time of LASIK surgery and decrease the frequency and severity of dry eye symptoms 6 months after surgery. This ...
The present study was designed to compare the use of mitomycin in PRK for the treatment of refractive errors and to compare these results to customized Lasik
The investigators are comparing outcomes of LASIK surgery using a high definition wavefront-guided laser to a wavefront-optimized laser in patients with nearsightedness with and without astigmatism.
This study is designed to assess the tolerability and comfort of peri-operative 0.3% hypromellose eye drops in LASIK surgery and to assess whether preoperative 0.3% hypromellose eye drops add to postoperative comfort in LASIK surgery patients compared to control (no preoperative lubricant).
The purpose of the study is to compare the results of LASIK surgery when using Alcon Allegretto wavefront-guided excimer laser system compared to AMO Visx Custom wavefront-guided excimer laser system in patients with nearsightedness with and without astigmatism.
This study evaluates the difference in results between eyes that have been treated wavefront optimized laser vision correction compared to eyes treated with topography-guided laser vision correction. Each participant will receive wavefront optimized correction in one eye and topography-guided correction in the other.
To evaluate the changes in quality of life parameters after LASIK surgery.
Canadian WATCHMAN Registry is a multicentre (8 Centres) Canadian prospective, non-randomized, registry to enrol 100 consecutive patients undergoing LAA closure with the WATCHAN device to study the safety and effectiveness of the WATCHMAN device
Comparing LASIK outcomes using two femtosecond lasers