Publications by authors named "Buhrmann R"
Stacked implantation of two prosthetic iris devices for patients with iris defects: A modified surgical technique.
Am J Ophthalmol Case Rep
December 2023
Purpose: Iris pigment deficiency in patients with oculocutaneous albinism (OCA) often causes debilitating photophobia, which is routinely managed by sequential intracapsular insertion of two aniridia rings. A common concern of this technique is the risk of segment interdigitation, which can lead to intraoperative complications.
Observations: In this report, we describe a modified technique through which both rings were stacked together and inserted simultaneously in a 62-year-old male patient with oculocutaneous albinism and a mild cataract.
Purpose: The purpose of this study was to examine the association of alcohol consumption with intraocular pressure (IOP) and glaucoma and to assess whether any associations are modified by a glaucoma polygenic risk score (PRS).
Methods: Cross-sectional analysis of data from the Canadian Longitudinal Study on Aging Comprehensive Cohort, consisting of 30,097 adults ages 45 to 85 years, was done. Data were collected from 2012 to 2015.
Purpose: Studies examining the apolipoprotein E (APOE) ε4 allele and glaucoma are inconsistent, which could be due to interactions with other factors. We examined the relationship between the APOE ε4 allele and glaucoma and intraocular pressure in a large, population-based random sample and explored whether the APOE ε4 allele interacted with systemic hypertension.
Methods: Data came from the Canadian Longitudinal Study on Aging, a population-based study that included 24,655 adults ages 45 to 85 years old in the European ancestry cohort.
Purpose: To examine the longitudinal association between vision-related variables and the 3-year change in cognitive test scores in a community-dwelling sample of adults and to explore whether sex, education, or hearing loss act as effect modifiers.
Methods: Data came from two waves of a 3-year population-based prospective cohort study (Canadian Longitudinal Study on Aging), which consisted of 30,097 randomly selected people aged 45-85 years from 7 Canadian provinces. Visual impairment (VI) was defined as binocular presenting visual acuity worse than 20/40.
Article Synopsis
- The study aimed to explore how visual impairment and self-reported eye diseases relate to balance issues in adults aged 45 to 85.
- Using data from a Canadian population-based study, researchers measured participants' balance and visual acuity, finding that many experienced declines in balance over three years.
- Results showed that worse visual acuity is significantly linked to higher odds of balance problems, particularly in those with cataracts, highlighting the need for initiatives to prevent vision loss and improve balance in affected individuals.
Objective: Determine the 3-year incidence of visual impairment (VI) in Canada and its risk factors.
Design: Prospective 3-year cohort study PARTICIPANTS: Data from 23 973 adults taking part in the Canadian Longitudinal Study on Aging Comprehensive Cohort baseline and 3-year follow-up exams were included.
Methods: Inclusion criteria were 45 to 85 years of age, community-dwelling, and living near one of the 11 data collection sites across 7 Canadian provinces.
Purpose: Our goal was to explore the longitudinal association between vision-related variables and incident depressive symptoms in a community-dwelling sample of older adults and to examine whether sex, education, or hearing loss act as effect modifiers.
Methods: A 3-year prospective cohort study was performed using data from the Canadian Longitudinal Study on Aging consisting of 30,097 individuals aged 45-85 years. Visual acuity was evaluated with habitual distance correction using an illuminated Early Treatment of Diabetic Retinopathy Study chart.
Objective: We investigated whether postmenopausal hormone therapy (HT) use interacts with diabetes, a risk factor for several age-related eye diseases.
Methods: A cross-sectional analysis of women involved in the Canadian Longitudinal Study on Aging was performed. The random sample comprised of 15,320 community-dwelling women between ages 45 and 85 years old sampled from areas adjacent to 11 data collection centers across Canada.
Objective: To determine the use of home care services in those with and without visual impairment in Canada.
Design: Population-based cross-sectional study.
Participants: Participants came from the baseline examination of the Canadian Longitudinal Study on Aging Comprehensive Cohort.
Objectives: To determine whether visual acuity is related to balance in older adults with peripheral vascular disease (PVD) or diabetes mellitus.
Design: Cross-sectional analysis.
Setting: Canada.
Objective: To provide the frequency and potential determinants of eye care utilization over the last 12 months among Canadians between the ages of 45 and 85 years old.
Design: Cross-sectional population-based study.
Participants: 30,097 people in the Comprehensive Cohort of the Canadian Longitudinal Study on Aging.
Objective: To determine the prevalence and determinants of visual impairment in Canada.
Design: Cross-sectional population-based study.
Participants: 30,097 people in the Comprehensive Cohort of the Canadian Longitudinal Study on Aging METHODS: Inclusion criteria included being between the ages of 45 and 85 years old, community-dwelling, and living near one of the 11 data collection sites across 7 Canadian provinces.
Objective: The relationship between cataract surgery wait times and rates of surgery was investigated to determine whether wait times correlate with rates of surgery.
Design: Cross-sectional study.
Participants: We collected 2 Ontario registries for cataract surgeries: (i) Cancer Care Ontario wait time registry; and (ii) The Ontario Health Insurance Plan billing records.
Objective: Selective laser trabeculoplasty (SLT) and argon laser trabeculoplasty (ALT) are used to lower intraocular pressure (IOP) in patients with open-angle glaucoma (OAG). We report long-term follow-up data comparing SLT to ALT.
Design: Follow-up of prospective randomized clinical trial.
Purpose: To evaluate clinical aspects of patients with the diagnosis of plateau iris (PI) or pseudoplateau iris (PPI) made by ultrasound biomicroscopy (UBM) in order to determine if there are any clinical factors that can help differentiate between these two entities.
Method: A retrospective cohort of consecutive UBM patients with the diagnosis of PI or PPI. The diagnosis of PI was based on an anteriorly positioned ciliary body that abutted the peripheral iris, a narrow (<10 degrees) or closed angle for at least 180 degrees, and the anterior portion of the iris positioned anterior to scleral spur.
Objective: To assess the effectiveness of interventions aimed to increase retinal screening among people with diabetes.
Methods: A systematic literature search was conducted of multiple electronic bibliographic databases up to May 2005. Studies were included if interventions were used to promote screening for diabetic retinopathy in any language and with any study design.
Objective: To assess the relative stabilities of optical coherence tomography (OCT)-based retinal volume and central foveal thickness measurements in the setting of eccentric or inconsistent fixation.
Methods: Ten healthy right eyes underwent multiple macular OCT centered at fixation. To model the effect of eccentric or inconsistent fixation, OCT was repeated with scan centers precisely shifted by 0.
Objective: To compare optical coherence tomography-based measures of retinal thickness and volume as quantitative tests for clinically significant macular edema (CSME).
Design: Diagnostic validation study.
Methods: Sixty-five eyes with diabetic retinopathy underwent stereo photographic and optical coherence tomographic examination.
Background: Cataract surgery is the most common operative procedure performed in Canada, and how patients are affected by wait times for this surgery has important clinical, public health and health policy considerations. We conducted a systematic review to understand the relation between wait time for cataract surgery and patient outcomes and the variables that modify this relation.
Methods: We performed an electronic search of 11 databases and the proceedings of 4 conferences.
Aims: To compare selective laser trabeculoplasty (SLT) and argon laser trabeculoplasty (ALT), in terms of intraocular pressure (IOP) lowering, in patients with open-angle glaucoma.
Methods: 176 eyes of 152 patients were enrolled in this study, 89 in the SLT and 87 in the ALT groups. Patients were randomised to receive either SLT or ALT treatment to 180 degrees of the trabecular meshwork.
Background/aims: The efficacy and safety of selective laser trabeculoplasty (SLT) has been found to be equivalent to argon laser trabeculoplasty (ALT). Since SLT produces significantly less disturbance to the trabecular meshwork and is theoretically more repeatable than ALT, it has potential to replace ALT as the standard procedure to treat medically uncontrolled open angle glaucoma. This study's objective is to determine factors that predict successful SLT at 1 year post-treatment.
View Article and Find Full Text PDFThis review describes a scheme for diagnosis of glaucoma in population based prevalence surveys. Cases are diagnosed on the grounds of both structural and functional evidence of glaucomatous optic neuropathy. The scheme also makes provision for diagnosing glaucoma in eyes with severe visual loss where formal field testing is impractical, and for blind eyes in which the optic disc cannot be seen because of media opacities.
View Article and Find Full Text PDFObjective: To measure limitations in the daily activities of village life associated with having trichiasis for individuals with and without visual acuity loss.
Methods: Men and women 40 years and older in 6 randomly chosen rural villages in the Kongwa district of Tanzania had visual acuity measured and were examined by an ophthalmologist. Subjects indicated the degree of difficulty with daily activities of village life and whether the difficulty was related, in any way, to vision.