Effects of Short-term Preoperative Topical Ketorolac on Pupil Diameter in Eyes Undergoing Femtosecond Laser–Assisted Capsulotomy

2017 ◽  
Vol 33 (4) ◽  
pp. 230-234 ◽  
Author(s):  
Vasilios F. Diakonis ◽  
Georgios A. Kontadakis ◽  
Apostolos G. Anagnostopoulos ◽  
Nilufer Yesilirmak ◽  
Daniel P. Waren ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Pupil Diameter ◽  
Short Term

Short-term Results of Penetrating Keratoplasty Performed with the Femtec Femtosecond Laser

2008 ◽  
Vol 146 (1) ◽  
pp. 50-55.e1 ◽  
Author(s):  
Louis Hoffart ◽  
Helene Proust ◽  
Frederic Matonti ◽  
Bernard Ridings ◽  
John Conrath
Keyword(s):  
Femtosecond Laser ◽  
Penetrating Keratoplasty ◽  
Short Term

scholarly journals Outcomes of a Single-Segment Intrastromal Corneal Ring in Early Keratoconus Versus Early Pellucid Marginal Degeneration

2021 ◽  
Author(s):  
Seyed Javad Hashemian ◽  
Parya Abdolalizadeh ◽  
Leila Ghiasian ◽  
Hossein Aghaei ◽  
Ali Hadavandkhani ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Early Stage ◽  
Interventional Study ◽  
Short Term ◽  
Single Segment ◽  
Corrected Visual Acuity ◽  
Intrastromal Corneal Ring ◽  
Ring Segment ◽  
Outpatient Center

Abstract Purpose: To determine the effect of a single-segment intrastromal corneal ring segment (ICRS;Intacs-SK) on early keratoconus (KCN) or pellucid marginal degeneration (PMD).Methods: It is a prospective interventional study. One-hundred-twenty-four eyes (99 patients) with KCN and 36 eyes (26 patients) with PMD at early stage (the maximum keratometric reading less than 55 diopters) were included to ICRS implantation using femtosecond laser at a tertiary university-based hospital and a private outpatient center. The uncorrected distance and spectacle-corrected visual acuity (UDVA and SCDVA), manifest spherical and cylindrical refractions, and keratometry indices were measured preoperatively and postoperatively, 1 week, 2 and 6 months.Results: One week after surgery, significant improvements were observed in UDVA, SCDVA, cylinder and keratometry readings of both KCN and PMD groups (all P<0.05) with no significant changes afterwards. No significant change occurred in the sphere refraction of PMD group (P=0.10) in contrast to KCN group (P<0.001). Corneal irregularity of KCN group in central 3 and 5 mm zones increased at 1 week (both P<0.001) and then continued to decrease up to 6 months. However, the corneal irregularity of PMD group had significant reduction only at 1 week in 5-mm zone (P=0.02) and 2 months in 3-mm zone (P=0.01) postoperatively. The final efficacy indexes were 1.44±0.71 and 0.87±0.40 in KCN and PMD groups, respectively. Conclusion: Visual acuity and keratometry values reached stability at 1 week, after one-segment Intacs-SK implantation in KCN and PMD groups. The short-term efficacy of the procedure was more in early KCN compared to early PMD.

Effects of Femtosecond Laser-Assisted Cataract Pretreatment on Pupil Diameter: A Comparison Between Three Laser Platforms

2016 ◽  
Vol 32 (2) ◽  
pp. 84-88 ◽  
Author(s):  
Vasilios F. Diakonis ◽  
Nilufer Yesilirmak ◽  
Ibrahim O. Sayed-Ahmed ◽  
Daniel P. Warren ◽  
George A. Kounis ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Pupil Diameter

scholarly journals Femtosecond Laser-Assisted Cataract Surgery in Glaucoma Patients, Case Series.

2020 ◽  
Author(s):  
Daniela Alvarez-Ascencio ◽  
Carolina Fernanda Prado-Larrea ◽  
Jesus Jimenez-Roman ◽  
Rafael Castañeda-Diez
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Visual Fields ◽  
Case Series ◽  
Glaucoma Drainage Device ◽  
Angle Closure ◽  
Mean Deviation ◽  
Short Term ◽  
Case Series Study

Abstract BackgroundWe aim to describe the short-term effect of femtosecond laser-assisted cataract surgery (FLACS) in intraocular pressure (IOP), visual acuity (VA), number of hypotensive medications, and visual fields (VF) in glaucomatous eyes.MethodsSingle-center consecutive case series study included patients with a previous glaucoma diagnosis that needed cataract surgery alone or combined with incisional glaucoma procedure. IOP was measured during surgery immediately before and after pretreatment docking with an indentation tonometer. Changes in visual acuity (VA), IOP, number of medications, and VF were evaluated with a 90 day follow up.ResultsTwenty-seven eyes of 27 patients were included. Mean patient age was 70 years, 70% (n = 19) were female. Glaucoma diagnoses were: twelve patients with primary open-angle glaucoma, 13 with angle-closure glaucoma, and 2 with pseudoexfoliation glaucoma. Twenty-one patients underwent cataract surgery alone and 6 combined with an incisional glaucoma procedure (trabeculectomy or glaucoma drainage device implantation). We found no significant differences between pre-docking IOP (17.59 mmHg ± 6.25 SD) and post-docking IOP (17.23 mmHg ± 7.74 SD) p = 0.7. No surgical complications were recorded. The 90-day postoperative follow up revealed no changes from baseline regarding VF mean deviation, mean IOP, and the number of glaucoma medications decreased in both groups.ConclusionFLACS appears to perform well in the short-term in eyes with glaucoma undergoing cataract surgery alone or with an incisional glaucoma procedure. Comparable outcomes to manual phacoemulsification were obtained regarding IOP, VA, and postoperative period evolution.Clinical SignificanceSafety and efficacy of FLACS have not been properly studied in the glaucoma population, we present a case series with different glaucoma diagnoses who underwent FLACS alone or with an incisional glaucoma procedure.

Femtosecond laser implantation of a 340-degree intrastromal corneal ring segment in keratoconus: Short-term outcomes

2017 ◽  
Vol 43 (10) ◽  
pp. 1251-1256 ◽  
Author(s):  
Mohammad Mehdi Sadoughi ◽  
Bahram Einollahi ◽  
Amir Reza Veisi ◽  
Mohammad Zare ◽  
Mohammad Reza Sedaghat ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Short Term ◽  
Intrastromal Corneal Ring ◽  
Ring Segment

Time-Varying Properties of Respiratory Fluctuations in Pupil Diameter of Human Eyes

1994 ◽  
Vol 33 (01) ◽  
pp. 46-48 ◽  
Author(s):  
K. Yana ◽  
F. Okuyama ◽  
Takashi Tokoro ◽  
H. Yoshida
Keyword(s):  
Fourier Transform ◽  
Data Analysis ◽  
Least Squares ◽  
Lung Volume ◽  
Pupil Diameter ◽  
Power Spectra ◽  
Recursive Least Squares ◽  
Time Varying ◽  
Short Term ◽  
Human Eyes

Abstract:The time varying properties have been investigated of respiratory components in fluctuations of the pupil diameter (PDF) of the human eye. PDF and instantaneous lung volume were simultaneously measured for 45 minutes under natural binocular viewing conditions. The short-term Fourier transform and the autoregressive signal modeling together with the recursive least squares algorithm have been applied for the estimation of nonstationary power spectra. Data analysis showed a bursting type non-sta-tionarity in the appearance of the respiratory component in PDF.

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