Publications by authors named "Khoueir Z"
Purpose: This study reports on the combination of excisional goniotomy and cataract extraction in the management of glaucoma in terms of intraocular pressure (IOP) and glaucoma medication reduction.
Methods: This is a retrospective case series. Twenty-eight eyes of 22 patients with the diagnosis of cataract and ocular hypertension or glaucoma of any stage underwent combined phacoemulsification and Kahook Dual Blade (KDB) goniotomy, between March 2019 and September 2020.
Bilateral multifocal central serous retinopathy following mRNA COVID-19 vaccine.
J Fr Ophtalmol
June 2022
We present a case of acute bilateral multifocal CSCR in a young healthy Caucasian female occurring 3 days after receiving the first dose of the Pfizer-BioNTech BNT162b2 COVID-19 mRNA vaccine. The true incidence of this adverse reaction might be underreported in asymptomatic unilateral or paracentral cases. We believe that the post-COVID-19 vaccination occurrence of CSCR is not a sufficient reason to withhold the second dose of the vaccine.
View Article and Find Full Text PDFPurpose: This study reports the combination of noncontact tonometry and spectral domain optical coherence tomography (SD-OCT) in mass glaucoma screening in the Lebanese population.
Methods: This cross-sectional study included Lebanese individuals who participated in a glaucoma screening campaign in March 2018 and March 2019 for World Glaucoma Week. Intraocular pressure (IOP) was measured by noncontact tonometry.
Aim And Objective: Evaluate the short-term safety and efficacy of dexmedetomidine (0.0055%) drops on intraocular pressure (IOP) in healthy eyes.
Materials And Methods: In this randomized controlled trial, patients with normal eye exams were randomly assigned to receive, in a randomly selected eye, one drop of either balanced salt solution (BSS) or dexmedetomidine (0.
Phacoemulsification and cataract surgery in general often lead to trabeculectomy bleb failure. We herein describe an unusual occurrence in a 79-year-old female who had a failed trabeculectomy bleb for one year prior to presentation, and whose failed bleb became reformed, and she regained function on the first day post-phacoemulsification, manifesting as a decrease in intraocular pressure. Topical corticosteroids were used for one month postoperatively and the bleb remained functional over more than six months of follow-up.
View Article and Find Full Text PDFAbdelmassih Y, Tomey K, Khoueir Z. Micropulse Transscleral Cyclophotocoagulation. J Curr Glaucoma Pract 2021;15(1):1-7.
View Article and Find Full Text PDFBackground/purpose: To evaluate the prevalence and extent of vitreous cortex remnants (VCR) on the surface of the retina in eyes with primary rhegmatogenous retinal detachment (RRD) and posterior vitreous detachment.
Methods: Triamcinolone acetonide was injected in the vitreous cavity of 100 consecutive cases of acute primary RRD undergoing pars plana vitrectomy. A multivariate regression analysis was performed to determine any association between the presence and pattern of stained VCR on the surface of the retina and the following variables: age, diabetes, axial length, phakic status, extent of RRD, and macular status.
Purpose: To report the efficacy and safety of MicroPulse transscleral laser therapy (TLT) and Kahook Dual Blade excisional goniotomy and goniosynechialysis combined with phacoemulsification for chronic angle-closure glaucoma (ACG).
Patients And Methods: A 39-year-old hyperopic female with a known history of ACG presented with a 2-week history of blurry vision, headache, and photophobia in the right eye (RE) following surgical peripheral iridectomy at another hospital. On examination, her uncorrected visual acuity was 20/50 in the RE, and 20/25 in the left eye (LE).
Precis: In open-angle glaucoma, when neuroretinal rim tissue measured by volumetric optical coherence tomography (OCT) scans is below a third of the normal value, visual field (VF) damage becomes detectable.
Purpose: To determine the amount of neuroretinal rim tissue thickness below which VF damage becomes detectable.
Methods: In a retrospective cross-sectional study, 1 eye per subject (of 57 healthy and 100 open-angle glaucoma patients) at an academic institution had eye examinations, VF testing, spectral-domain OCT retinal nerve fiber layer (RNFL) thickness measurements, and optic nerve volumetric scans.
Artifact Rates for 2D Retinal Nerve Fiber Layer Thickness Versus 3D Retinal Nerve Fiber Layer Volume.
Transl Vis Sci Technol
February 2020
Purpose: To compare artifact rates in two-dimensional (2D) versus three-dimensional (3D) retinal nerve fiber layer (RNFL) scans using Spectralis optical coherence tomography (OCT).
Methods: Thirteen artifact types in 2D and 3D RNFL scans were identified in 106 glaucomatous eyes and 95 normal eyes. Artifact rates were calculated per B-scan and per eye.
Micropulse transscleral cyclophotocoagulation is a promising and relatively new technique that uses repetitive micropulses of diode laser energy, delivered with the Cyclo G6 Glaucoma Laser System (Iridex Corporation), in an off-and-on cyclical manner. This review article provides an update on the latest data available for this technique, including a discussion of the aspects in which there is still limited data, such as the precise mechanism of action, the ideal laser parameters based on total energy levels, as well as an overview of other potentially relevant variables that may be playing an important role in outcomes.
View Article and Find Full Text PDFUnlabelled: PRéCIS:: Neuroretinal rim minimum distance band (MDB) thickness is significantly lower in older subjects and African Americans compared with whites. It is similar in both sexes.
Purpose: To evaluate the relationship between age, race, and sex with the neuroretinal rim using high-density spectral-domain optical coherence tomography optic nerve volume scans of normal eyes.
Unlabelled: PRéCIS:: The diagnostic capability of peripapillary retinal volume is similar to peripapillary retinal nerve fiber layer thickness for diagnosing glaucoma, but with fewer artifacts.
Purpose: To compare the diagnostic capability of 3-dimensional peripapillary retinal volume (RV) versus 2-dimensional peripapillary retinal nerve fiber layer (RNFL) thickness for open-angle glaucoma.
Patients And Methods: A retrospective cross-sectional analysis was conducted.
Precis: Three-dimensional (3D) spectral domain optical coherence tomography (OCT) volume scans of the optic nerve head (ONH) and the peripapillary area are useful in the management of glaucoma in patients with a type I or II Boston Keratoprosthesis (KPro).
Purpose: The purpose of this study was to report the use of spectral domain OCT in the management of glaucoma in patients with a type I or II Boston KPro.
Materials And Methods: This study is an observational case series.
Aim: To assess the long-term anatomical and functional outcomes in addition to complications of a new surgical technique of localized intraocular application of mitomycin C (MMC) to prevent proliferative vitreoretinopathy (PVR) in eyes with open globe trauma.
Methods: Prospective non-comparative interventional case series of 16 consecutive eyes with perforating and deep choroidal impact foreign body injuries presenting over a 2-year period. Patients underwent vitrectomy with intraocular application of MMC at the site of the chorioretinal injury and were followed-up for 1 year.
Purpose: This study aimed at evaluating the intermediate-term efficacy and safety of micropulse transscleral cyclophotocoagulation (MP-TSCPC) in cases of uncontrolled glaucoma.
Methods: Patients with moderate to advanced glaucoma and uncontrolled intraocular pressure (IOP) despite maximally tolerable antiglaucoma medications were selected to undergo MP-TSCPC using the MP3 handpiece with the Iridex Cyclo G6 (IRIDEX Laser Systems). Follow-up examinations took place on a regular basis until 15 months postoperatively.
Purpose: To evaluate the effects of age, race, and ethnicity on the optic nerve and peripapillary retina using spectral-domain optical coherence tomography (SD-OCT) three-dimensional (3D) volume scans in normal subjects.
Methods: This is a cross-sectional study performed at a single institution in Boston. All patients received retinal nerve fiber layer (RNFL) scans and an optic nerve 3D volume scan.
Purpose: To compare the efficacy of two cyclodestructive treatments for refractory glaucoma: High Intensity Focused Ultrasound (HIFU) cyclocoagulation and transscleral diode laser cyclophotocoagulation (cyclodiode).
Methods: A retrospective comparative single centre study including all patients who underwent cyclodestruction for refractory glaucoma by either HIFU cyclocoagulation or cyclodiode. "Refractory glaucoma" was defined as an uncontrolled high IOP despite medical treatment and at least one filtering surgery.
Purpose: The purpose of this study was to report an unusual first manifestation of Coats' disease presenting as an acute angle-closure glaucoma attack in an adult patient.
Patients And Methods: A 37-year-old African woman presented to the emergency department with severe headache, ocular pain, and no light perception in the left eye. The left pupil was middilated and nonreactive, and the intraocular pressure (IOP) by applanation tonometry was 47 mm Hg.
Purpose: To describe new software tools for quantifying optic nerve head drusen volume using 3-dimensional (3D) swept-source optical coherence tomography (SS-OCT) volumetric scans.
Materials And Methods: SS-OCT was used to acquire raster volume scans of 8 eyes of 4 patients with bilateral optic nerve head drusen. The scans were manually segmented by 3 graders to identify the drusen borders, and thereafter total drusen volumes were calculated.
Purpose: To determine the diagnostic capability of peripapillary 3-dimensional (3D) retinal nerve fiber layer (RNFL) volume measurements from spectral-domain optical coherence tomography (OCT) volume scans for open-angle glaucoma (OAG).
Design: Assessment of diagnostic accuracy.
Methods: Setting: Academic clinical setting.
Purpose: Evaluation of high intensity focused ultrasound (HIFU) transscleral cyclocoagulation as an alternative to trabeculectomy in the treatment of refractory chronic angle closure glaucoma (CACG).
Methods: This prospective one armed single center pilot study was conducted on patients with medically uncontrolled CACG who underwent high intensity focused ultrasound (HIFU) cyclocoagulation as first line surgical treatment, using the Eye-OP1 HIFU device (Eyetechcare-Rillieux-la-Pape, France) driven by ultrasound biomicroscopic (UBM) ciliary body localization. All patients had documented progression of their glaucoma despite conventional medical and laser therapy.