Publications by authors named "Matthew Bujak"
Article Synopsis
- The study aimed to showcase cases of extreme corneal flattening, termed collagen compaction syndrome, following successful endothelial keratoplasty (EK).
- Four patients, averaging 64.8 years old, experienced significant vision problems after EK due to chronic corneal edema, with best-corrected vision ranging from 20/40 to 20/200.
- The findings suggest that the duration of chronic corneal edema before surgery may greatly impact EK outcomes, indicating the need for careful timing of the procedure and potential rescue treatments for patients with severe edema.
Article Synopsis
- The study aimed to compare the effectiveness of femtosecond-enabled deep anterior lamellar keratoplasty (FE-DALK) with standard deep anterior lamellar keratoplasty (S-DALK) for patients with keratoconus or corneal scarring.
- A total of 100 eyes from 97 participants were randomly assigned to either FE-DALK or S-DALK, with key measurements focused on postoperative astigmatism and other visual outcomes taken at 15 months.
- The results indicated similar outcomes for both techniques, showing comparable levels of postoperative astigmatism and surgically induced corneal astigmatism, suggesting that both methods are equally effective.
Purpose: To compare accelerated corneal crosslinking (CXL) alone, CXL with simultaneous intrastromal corneal ring segments (CXL-ICRS), and CXL with simultaneous topography-guided photorefractive keratectomy (CXL-TG-PRK) in progressive keratoconus, pellucid marginal degeneration (PMD), or laser in situ keratomileusis (LASIK)-induced ectasia.
Setting: The Kensington Eye Institute and Bochner Eye Institute, Toronto, Canada.
Design: Prospective nonrandomized interventional study.
Purpose: We examined the efficacy and preoperative characteristics that affect outcomes of accelerated (9 mW/cm for 10 minutes) corneal cross-linking (CXL).
Design: Prospective single-center observational cohort study.
Methods: We enrolled 612 eyes of 391 subjects with progressive keratoconus (n = 589), pellucid marginal degeneration (n = 11), and laser in situ keratomileusis-induced ectasia (n = 12).
Dry eye disease is a disorder of the ocular surface that causes pain and low vision in a significant portion of the adult population. A common cause is obstructive Meibomian gland dysfunction, whereby the Meibomian glands secrete abnormal meibum with a melting point elevated by 3°C-4°C; hence, hyperthermia is the typical treatment. A design is proposed for an ultrasound hyperthermia device made of a transducer contained inside a contact lens with an internal air gap.
View Article and Find Full Text PDFPurpose: To assess quantitatively the efficacy of monovision correction in the treatment of acquired small-angle binocular diplopia in adult patients.
Design: Prospective, interventional case series.
Methods: Twenty patients with symptomatic diplopia were enrolled in a prospective treatment trial at a tertiary university neuro-ophthalmology practice.
Between-grader repeatability of tear meniscus measurements using Fourier-domain OCT in patients with dry eye.
Ophthalmic Surg Lasers Imaging
November 2011
Article Synopsis
- The study assessed the accuracy of height, depth, and cross-sectional area measurements of the lower tear meniscus using an optical coherence tomography (OCT) system.
- A total of 16 patients with dry eye underwent imaging, with two masked graders measuring and analyzing the repeatability of their findings.
- Results showed high consistency in measurements, with good intraclass correlation and minimal bias, indicating that variability was mainly due to differences in images rather than grader discrepancies.
Serial measurement of tear meniscus by FD-OCT after instillation of artificial tears in patients with dry eyes.
Ophthalmic Surg Lasers Imaging
November 2011
Background And Objective: To use Fourier-domain optical coherence tomography (FD-OCT) to study the effect of artificial tears on the tear meniscus in patients with dry eyes.
Patients And Methods: The lower tear meniscus of 16 consecutive patients with dry eyes was imaged by an FD-OCT system (RTVue; Optovue, Inc., Fremont, CA).
Light flashbacks during retinal laser photocoagulation following fluorescein angiography.
Ophthalmic Surg Lasers Imaging
December 2007
Background And Objective: Yellow light flashbacks can often be seen in cases of laser photocoagulation performed shortly after fluorescein angiography. To determine whether unblocked secondary emission from retained aqueous and vitreous fluorescein may be reaching the treating ophthalmologist, the absorption characteristics of serial dilutions of sodium fluorescein were studied at wavelengths similar to the output of the krypton laser.
Materials And Methods: A Unicam sp500 series II visible spectrophotometer (Pye Unicam Ltd.