Publications by authors named "Robert O'Brien"

Introduction: Episodes of alienation and/or anomie in pharmacists have been reported in historical accounts since the 19th century. Alienation and anomie are distinct types of psychological or social ills where people are problematically separated from, or their skills and values are misaligned with, others and their environment. Alienation and/or anomie can be important precursors of many negative work experiences, including job dissatisfaction, burnout and/or intention to leave.

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  • This study aimed to confirm the reliability of measuring choriocapillaris flow deficit (CCFD) within a specific macular grid and to track these measurements over time.
  • Researchers utilized advanced imaging technology to gather data, excluding certain areas in the scans to accurately calculate CCFD percentages in both normal eyes and those with eye conditions.
  • The findings showed that the methodology is effective for monitoring changes in CCFD, particularly in cases where drusen (eye abnormalities) resolved, demonstrating the practicality of the grid strategy for longitudinal studies.
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Introduction: Multiligament knee injuries (MLKI) are rare and complex, significantly impacting long-term outcomes, with risks of osteoarthritis, joint stiffness, and reduced activity levels.

Objective: To explore the evolution of MLKI treatment protocols, comparing historical and modern approaches, and to present a patient-tailored, preservation-first algorithm.

Methods: This article reviews the literature on MLKI management, focusing on surgical timing, techniques, and rehabilitation protocols.

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There are various treatment options for medial meniscus posterior root tears, such as conservative management, meniscectomy, pull-out repair, and suture anchor repair. However, the ultimate repair technique for optimal meniscal healing remains a topic of discussion, as each technique has its own set of risks and pitfalls. This technique provides a stable and straightforward approach that minimizes fixation-related concerns.

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  • Age-related macular degeneration (AMD) features large choroidal hypertransmission defects (hyperTDs), which are bright lesions detected via optical coherence tomography (OCT) and indicate loss of retinal pigment epithelium (RPE).
  • Large hyperTDs tend to persist over time, making them critical for understanding the progression from intermediate to late-stage atrophic AMD and useful as endpoints in clinical trials for potential therapies.
  • In a study monitoring 202 AMD eyes for nearly 47 months, a vast majority (99.6%) of the large hyperTDs remained persistent, while only a few showed non-persistence, mainly due to changes in the RPE and retinal area where the hyperTDs were present.
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  • The study aimed to compare the effectiveness of spectral-domain OCT angiography (SD-OCTA) and swept-source OCT angiography (SS-OCTA) in detecting and measuring persistent choroidal hypertransmission defects (hyperTDs) in patients with advanced age-related macular degeneration (AMD).
  • A total of 32 patients underwent both imaging techniques, and the results showed a high level of agreement in the number and size of hyperTDs, with correlation coefficients of 0.969 and 0.999.
  • While there were some statistically significant differences in measurements, these differences were not clinically meaningful, indicating that SD-OCTA can serve as a reliable alternative to SS-OCTA for evaluating hyperTDs.
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Purpose: To determine endothelial cell density (ECD) from real-world donor cornea endothelial cell (EC) images using a self-supervised deep learning segmentation model.

Methods: Two eye banks (Eversight, VisionGift) provided 15,138 single, unique EC images from 8169 donors along with their demographics, tissue characteristics, and ECD. This dataset was utilized for self-supervised training and deep learning inference.

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Purpose: Despite established tear grade classifications, there is currently no radiological classification for sMCL tear locations. This study aims to establish a magnetic resonance imaging (MRI) tear location classification system for sMCL tears, to enhance understanding and guide treatment decisions by categorizing tear types.

Methods: A retrospective search in a single institution's MRI database identified patients with acute, Grade III sMCL tears (< 30 days between injury and MRI) from January to December 2022.

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Purpose: To test the use of a virtual reality visual field headset (VRVF) for implementation of the Esterman visual field (EVF) test as compared with standard automated perimetry (SAP) among people with glaucoma.

Design: Experimental design.

Subjects: Patients with mild to severe glaucoma ranging from 10 to 90 years who presented for follow-up at a glaucoma clinic in Miami, Florida were eligible.

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Purpose: To evaluate the impact of age as a risk factor on the revision rates of anterior cruciate ligament (ACL) primary repair (ACLPR), dynamic intraligamentary stabilization (DIS) and bridge-enhanced ACL restoration (BEAR) compared to ACL reconstruction (ACLR).

Methods: A systematic literature search was performed for comparative studies comparing outcomes for ACLPR, DIS or BEAR to ACLR. A random-effects meta-analysis was performed to assess nondifferentiated and age-differentiated (skeletally mature patients ≤21 and >21 years) ACL revision and reoperation risk, as well as results for subjective outcomes.

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Purpose: The association between the total macular burden of hyperreflective foci (HRF) in eyes with intermediate AMD (iAMD) and the onset of persistent choroidal hypertransmission defects (hyperTDs) was studied using swept-source optical coherence tomography (SS-OCT).

Design: Post hoc subgroup analysis of a prospective study.

Methods: A retrospective review of iAMD eyes from subjects enrolled in a prospective SS-OCT study was performed.

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Purpose: To compare surgical outcomes of phacoemulsification combined with Baerveldt implantation (phaco-tube) or trabeculectomy with mitomycin-C (MMC) (phaco-trab) in patients without prior incisional ocular surgery.

Design: Single-center, retrospective, comparative case series.

Participants: A total of 90 patients underwent surgical treatment, including 45 patients in the phaco-tube group and 45 patients in the phaco-trab group.

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Purpose: Swept-source OCT angiography (SS-OCTA) scans of eyes with age-related macular degeneration (AMD) were used to replace color, autofluorescence, infrared reflectance, and dye-based fundus angiographic imaging for the diagnosis and staging of AMD. Through the use of different algorithms with the SS-OCTA scans, both structural and angiographic information can be viewed and assessed using both cross sectional and en face imaging strategies.

Design: Presented at the 2022 Charles L.

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During cell movement, cortical actin balances mechanical and osmotic forces to maintain cell function while providing the scaffold for cell shape. Migrating CD4 T cells have a polarized structure with a leading edge containing dynamic branched and linear F-actin structures that bridge intracellular components to surface adhesion molecules. These actin structures are complemented with a microtubular network beaded with membrane bound organelles in the trailing uropod.

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  • This study creates a method to identify Army transitioning service members (TSMs) most at risk of becoming homeless to implement preventive measures.
  • Using data from 4,790 soldiers and two machine learning models, the research predicts homelessness risk based on available administrative and self-reported data.
  • The findings show that targeted machine learning approaches can effectively identify high-risk individuals for outreach, significantly aiding in homelessness prevention efforts.
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Purpose: An algorithm developed to obtain drusen area and volume measurements using swept-source OCT angiography (SS-OCTA) scans was tested on spectral-domain OCT angiography (SD-OCTA) scans.

Design: Retrospective study.

Participants: Forty pairs of scans from 27 eyes with intermediate age-related macular degeneration and drusen.

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Purpose: To intraoperatively evaluate the ability of anterior cruciate ligament (ACL) primary repair (ACLPR) to restore anterior tibial translation (ATT) at time zero and to assess the influence of additional suture augmentation (SA) on ATT.

Methods: Patients with proximal ACL tears undergoing arthroscopic ACLPR with dual-suture anchor fixation were included in this time-zero clinical study. Laxity measurements were taken with a digital arthrometer to evaluate ATT stability preoperatively in the office (T0) as a standardized diagnostic tool, preoperatively under anesthesia (T1), at time zero intraoperatively after ACLPR but prior to SA fixation (T2), and after SA fixation (T3).

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Purpose: The impact of carotid endarterectomy (CEA) on choriocapillaris (CC) perfusion was investigated using swept-source optical coherence tomography angiography (SS-OCTA) imaging before and after surgery in patients with clinically significant carotid artery stenosis (CAS).

Methods: In this prospective observational study, patients with clinically significant CAS undergoing unilateral CEA had SS-OCTA imaging performed in both eyes before and within 1 week after surgery. The percent CC flow deficits (CC FD%) and CC thickness were assessed using previously validated algorithms.

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Background: To examine ocular symptoms and signs of veterans with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) diagnosis, ME/CFS symptoms, and controls.

Methods: This was a prospective, cross-sectional study of 124 South Florida veterans in active duty during the Gulf War era. Participants were recruited at an ophthalmology clinic at the Miami Veterans Affairs Hospital and evaluated for a diagnosis of ME/CFS, or symptoms of ME/CFS (intermediate fatigue, IF) using the Canadian Consensus criteria.

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Senescent cells are a major contributor to age-dependent cardiovascular tissue dysfunction, but knowledge of their in vivo cell markers and tissue context is lacking. To reveal tissue-relevant senescence biology, we integrate the transcriptomes of 10 experimental senescence cell models with a 224 multi-tissue gene co-expression network based on RNA-seq data of seven tissues biopsies from ∼600 coronary artery disease (CAD) patients. We identify 56 senescence-associated modules, many enriched in CAD GWAS genes and correlated with cardiometabolic traits-which supports universality of senescence gene programs across tissues and in CAD.

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Background: Breast-conserving therapy with oncoplastic reduction is a useful strategy for partial mastectomy defect reconstruction. The most recently published systematic review of oncoplastic breast reduction outcomes from 2015 showed wound dehiscence in 4.3%, hematoma in 0.

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  • The study evaluated the effectiveness of acute superficial medial collateral ligament (sMCL) repair with suture augmentation (SA) in patients with multiligament knee injuries over a 2-year follow-up period.
  • A total of 20 patients with grade III sMCL injuries showed positive outcomes, including 90% achieving negative valgus laxity and a low reoperation rate of 5%.
  • Participants reported high levels of patient-reported outcome measures (PROMs), indicating good-to-excellent knee function post-surgery.
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