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Since the cornea is the main responsible for the refraction of the eye, as its refractive power is greater than 70% of the total refraction of the eye, so modification of its refractive properties are used to change the optical system of the eye. Hence, laser-assisted in situ keratomileusis has become the most commonly procedure used to correct the refractive errors of the eye. The most important step in laser-assisted in situ keratomileusis is the creation of the corneal flap, which its thickness may judge the whole outcome of the surgery . So trying to minimize the variation in the thickness of the resultant flap in comparison to what planned flap thickness preoperatively become our target.
As laser-assisted in situ keratomileusis procedure started to use automated microkeratomes in creating corneal flaps since 1989, and science go on until United states Food and Drug Administration approved the IntraLase laser for flap creation in January 2000 femtosecond lasers work by emitting light pulses of short duration (10−15 s) at 1053 nm wavelength that cause photodisruption of the tissue with minimum collateral damage . This enables no blade incisions to be performed within the tissue at various patterns and depth with high precision.
Aim of the work To evaluate and compare the variation in corneal flap thickness created from use of a femtosecond laser and a MORIA microkeratome when making a 110-µm- and 90- µm thick corneal flap and to identify the potential factors that affect corneal flap thickness.
Femtosecond Laser in Comparison to Moria Microkeratome in Creating Corneal Flaps
anterior segment Ocular Coherence Tomography
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Published on BioPortfolio: 2018-04-06T05:54:11-0400
The objective of the study is to further develop clinical applications for the high speed corneal and anterior segment optical coherence tomography (CAS-OCT) system developed by Optovue, I...
Purpose of the study To evaluate the lower puntum dimensions in cases of acquired punctal stenosis(APS), using anterior segment optical coherence tomography (AS-OCT).
Some of the most prevalent eye diseases such as age-related macular degeneration, glaucoma and diabetic retinopathy are associated with ocular perfusion abnormalities. Currently, there is ...
To assess the changes of anterior chamber angle in patients with shallow anterior chamber and normal anterior chamber after phacoemulsification and intraocular lens implantation (IOL) usin...
A prospective comparison between standard deep anterior lamellar keratoplasty (S-DALK) performed manually using a blade (trephine) and femtosecond laser-enabled deep anterior lamellar kera...
To determine the efficacy of the femtosecond laser with integrated anterior segment optical coherence tomography (AS-OCT) for the detection of posterior capsular dehiscence in posterior polar cataract...
To evaluate the agreement of corneal curvature measured by a newly introduced swept-source anterior segment optical coherence tomography (CASIA2) and Pentacam (Oculus, Wetzlar, Germany).
To compare the reproducibility and agreement of anterior chamber angle (ACA) parameters and metrics obtained by four different anterior segment-optical coherence tomography (AS-OCT) devices.
To examine the influence of anterior segment optical coherence tomography imaging protocols on the intraobserver and intrasession repeatability of epithelial, stromal, and total corneal thickness meas...
We herein describe possible intraluminal obstruction due to a hyperreflective material found in anterior segment optical coherence tomography in 16 of 46 cases with XEN45 gel stent.
An imaging method using LASERS that is used for mapping subsurface structure. When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector observes interference fringes.
A technique utilizing a laser coupled to a catheter which is used in the dilatation of occluded blood vessels. This includes laser thermal angioplasty where the laser energy heats up a metal tip, and direct laser angioplasty where the laser energy directly ablates the occlusion. One form of the latter approach uses an EXCIMER LASER which creates microscopically precise cuts without thermal injury. When laser angioplasty is performed in combination with balloon angioplasty it is called laser-assisted balloon angioplasty (ANGIOPLASTY, BALLOON, LASER-ASSISTED).
The distance between the anterior and posterior poles of the eye, measured either by ULTRASONOGRAPHY or by partial coherence interferometry.
A breach in the continuity of the ANTERIOR CHAMBER of the eyeball.
Comparison of various psychological, sociological, or cultural factors in order to assess the similarities or diversities occurring in two or more different cultures or societies.
Ophthalmology is the branch of medicine that is devoted to the study and treatment of eye diseases. As well as mild visual defects correctable by lenses, ophthalmology is concerned with glaucoma, uveitis and other serious conditions affecting the eye, ...
Surgery is a technology consisting of a physical intervention on tissues. All forms of surgery are considered invasive procedures; so-called "noninvasive surgery" usually refers to an excision that does not penetrate the structure being exci...
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...