PubMed Journals Articles About "Femtosecond Laser System Arcuate Corneal Incision Manual Cataract" RSS

14:03 EST 29th January 2020 | BioPortfolio

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Showing "femtosecond laser system arcuate corneal incision Manual Cataract" PubMed Articles 1–25 of 18,000+

Comparison of Surgically Induced Astigmatism and Corneal Morphological Features Between Femtosecond Laser and Manual Clear Corneal Incisions.

To assess corneal morphologic changes and surgically induced astigmatism (SIA) following clear corneal incisions (CCIs) created manually or with the Catalys femtosecond laser (Johnson & Johnson Vision, Santa Ana, CA).

Femtosecond laser in refractive corneal surgery.

The introduction of the femtosecond (fs) laser has revolutionized ophthalmic surgery. With the worldwide application of fs-lasers, clinical outcomes and safety in corneal procedures have improved significantly and they have become an ideal tool for ultra-precise corneal refractive surgery. Flap creation in laser in situ keratomileusis (LASIK) is the most common use of this laser. It can also be used for other corneal refractive procedures including channel creation for the insertion of intrastromal corneal ...

Comparison of Perioperative Parameters in Femtosecond Laser-assisted Cataract Surgery using Three Nuclear Fragmentation Patterns.

To compare the perioperative parameters of quadrant, sextant, and grid lens fragmentation patterns in femtosecond laser-assisted cataract surgery (FLACS).

Preoperative intraocular pressure as a strong predictive factor for intraocular pressure rise during vacuum application in femtosecond laser-assisted cataract surgery.

To evaluate the effect of preoperative intraocular pressure (IOP) and the vacuum level on IOP during femtosecond laser-assisted cataract surgery.

Comparison of the selected parameters of the anterior segment of the eye between femtosecond laser-assisted cataract surgery, microincision cataract surgery, and conventional phacoemulsification: A case-control study.

The purpose of our study was to compare the selected parameters of the anterior segment of the eye in patients after femtosecond laser-assisted cataract surgery (FLACS) with the results of microincision cataract surgery (MICS) and conventional phacoemulsification surgery (CPS). This single-center prospective randomized comparative observational study included 87 patients. Patients were randomly selected into group A (FLACS), group B (MICS) and group C (control group). All the surgeries were performed by the...

Cataract surgery in corneal transplantation.

Corneal diseases are often associated with lens opacity. The present article reviews the recent advances in the management of cataract and corneal transplant.

Stromal keratophakia.

Stromal keratophakia was first performed by José Ignacio Barraquer in the 1960s. The refractive lamellar keratoplasty technique was intensely pursued in the 1980s as a method to alter corneal refractive power. However, because sculpting of the donor stromal lenticule and lamellar keratectomy of the recipient's cornea were performed with a mechanical microkeratome, the quality of the cut was poor and inconsistent. Consequently, the refractive outcomes of the lenticule implantation were poor. In addition, ep...

Femtosecond Laser-Assisted Small Incision Sutureless Intrastromal Lamellar Keratoplasty (SILK) for Corneal Transplantation in Keratoconus.

To describe a femtosecond laser-assisted small incision sutureless intrastromal lamellar keratoplasty in an eye with severe keratoconus and report on the outcome with a 1-year follow-up.

Comparison of Manual and Femtosecond Laser-Assisted Descemet Membrane Endothelial Keratoplasty for Failed Penetrating Keratoplasty.

To compare outcomes of manual Descemet membrane endothelial keratoplasty (M-DMEK) and femtosecond laser-assisted Descemet membrane endothelial keratoplasty (F-DMEK) in treatment of penetrating keratoplasty (PK) graft failure SETTING: Retrospective, interventional comparative case series METHODS: Included were all patients with a failed PK graft who underwent either F-DMEK (10 eyes of 10 patients) or M-DMEK (29 eyes of 29 patients) at Toronto Western Hospital and the Kensington Eye Institute between 2014 and...

Safety of air tamponade versus corneal hydration for sealing clear corneal incisions in cataract surgery.

To compare safety of wound hydration to anterior chamber air tamponade for securing watertight closure of clear corneal incisions, during uneventful cataract surgery.

All-fiber passively mode-locked ultrafast laser based on a femtosecond-laser-inscribed in-fiber Brewster device.

We report on an in-fiber Brewster device with a 45° tilted fiber grating (TFG) directly written by a plane-by-plane femtosecond laser inscription method. Up to 10 dB polarization-dependent loss was achieved, proving effective polarizing functionality. Furthermore, we employ it as an in-line polarizer to successfully mode lock a fiber laser through the nonlinear polarization rotation technique. A stable soliton pulse train has been generated at 1563.64 nm with a pulse width of 624 fs and pulse energy of ...

Manual small incision cataract surgery.

To review various techniques of manual small incision cataract surgery (MSICS), updates on training residents and fellows, and cost-effectiveness of the surgery.

Preoperative risk assessment for progression to DMEK following cataract surgery in Fuchs Endothelial Corneal Dystrophy.

To identify preoperative corneal tomographic features that predict progression to Endothelial Keratoplasty (EK) following cataract surgery in Fuchs Endothelial Corneal Dystrophy (FECD) and establish a regression model to identify high-risk patients.

Frequency of Corneal Astigmatism in Patients Presenting for Senile Cataract Surgery at a Teaching Hospital in Indian Rural Population.

The aim of this study was to assess prevalence of corneal astigmatism before cataract surgery in old age in Indian rural population.

Femtosecond laser self-assembly for silver vanadium oxide flower structures.

Flower-like silver vanadium oxide (SVO) micropatterns were realized by femtosecond laser in situ writing from its precursor. Self-assembled petals irradiated by a femtosecond laser were observed standing on the substrate along the scanned routine assisted by the formation of silver seeds and plasmonic-mediated effects. By controlling the concentration of ammonium monovanadate and the laser exposure time, a different thickness of petals was manipulated from ∼100  nm to micrometers. The SVO products wer...

Spontaneous Resolution of a Rapidly Formed Dense Cataract Following Nd: YAG Laser Peripheral Iridotomy in a Case of Pigmentary Glaucoma.

A 54-year old man was referred for a senior opinion. His vision had acutely dropped in his right eye from 6/6 to hand movements following Nd:YAG laser peripheral iridotomy (LPI) for treatment of pigmentary glaucoma. A dense rosette posterior subcapsular cataract had formed in his right eye rapidly after surgery. Within four weeks the cataract resolved spontaneously and his vision returned to 6/6. It is hypothesized that a dual mechanism caused the rapidly formed cataract. Shock waves stemming from Nd:YAG la...

A study of dry eye after cataract surgery in MGD patients.

To investigate the dry eye symptoms after cataract surgery in MGD patients and their relationships METHODS: The study included 115 patients (115 eyes) with age-related cataract that underwent uncomplicated cataract surgery, and the patients were divided into two groups according to the MGD diagnostic criteria: group A (MGD group) and group B (control group). Schirmer I test (ST-I), tear breakup time (TBUT), and corneal fluorescein staining (CFS) were performed preoperatively and at 3 days, 7 days, 14 day...

Femtosecond Laser-Assisted Penetrating Keratoplasty for Treating Infective Keratitis.

To report the results of penetrating keratoplasty (PKP) assisted by femtosecond laser in the treatment of persistent infective keratitis.

Evaluation of an intraoperative toric intraocular lens alignment system using an image-guided system.

To evaluate an intraoperative toric intraocular lens (IOL) alignment system using a dedicated operating microscope with an image-guided system without preoperative corneal marking.

Comparison of Manual Capsulorhexis and 25-Gauge Vitrectorhexis in Pediatric Cataract Surgery: A Pilot Study.

To compare short-term visual outcomes (best corrected visual acuity [BCVA]), visual axis opacification, anterior (ACCC) and posterior (PCCC) continuous curvilinear capsulorhexis size, shape, and extension, and their decentration between manual capsulorhexis and 25-gauge vitrectorhexis in pediatric cataract surgery with intraocular lens (IOL) implantation.

Phototherapeutic Keratectomy.

Phototherapeutic keratectomy (PTK) is an excimer laser based surgical procedure widely performed by corneal surgeons for treating anterior corneal stromal pathologies. PTK helps by ablating the corneal stroma, thereby improving corneal clarity and smoothening the surface. Transient discomfort and induced hyperopia from corneal flattening are the immediate post-operative concerns. The long term course is often marked by the recurrence of original corneal pathology and corneal haze formation. PTK, however, al...

The Effects of Diabetes Mellitus on the Corneal Endothelium: A Review.

The corneal endothelium plays a critical role in maintaining corneal clarity. There is an expected decline in cell density with age and disease, and maintaining the health of this cell layer is important as corneal endothelial cells generally are amitotic in vivo. Diabetes mellitus is a highly prevalent disease that damages the corneal endothelium. Diabetes causes structural and functional impairments of the corneal endothelium that decrease cellular reserve in response to stress. These effects have implica...

High-speed All-optical Modulator based on a Polymer Nanofiber Bragg grating printed by Femtosecond Laser.

On-chip optical modulator for high-speed information processing system has been widely investigated by majority of researchers but the connection with the fiber system is a difficulty. The fiber-based optical modulator is a good solution to this problem. Fiber Bragg Grating has good potential to be used as an optical modulator because of its linear temperature response, narrow bandwidth, and compact structure. In this paper, a new fiber-integrated all-optical modulator has been realized based on a polymer n...

Study on ablation threshold of fused silica by liquid-assisted femtosecond laser processing.

The femtosecond laser machining of fused silica in air and liquids is studied. The ablation threshold of fused silica is reduced from 2.22 to ${1.02}\;{{\rm J/cm}^2}$1.02J/cm. In order to explore the ablation mechanism fabricated in a liquid medium, the absorption characteristics of water and alcohol are studied. It is found that alcohol could absorb more laser energy than water. By analyzing the variation trend of laser-induced electron density based on an ionization model, we find that alcohol requires lo...

Descemet Stripping Only for a Chronic Descemet Detachment After Cataract Surgery.

To describe a case of postsurgical corneal decompensation in a patient with Fuchs endothelial dystrophy with a sectoral Descemet detachment and corneal edema that was successfully managed with a targeted Descemet stripping only (DSO) procedure.

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