Publications by authors named "Han-Ying Peggy Chang"
Clinicopathologic correlation of a pinguecula with spheroidal degeneration: a benign entity occasionally encountered in clinical practice.
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- The study investigates whether routine preoperative testing for cataract surgery leads to delays that increase the risk of falls among Medicare beneficiaries aged 66 and older.
- Results show that patients of high-testing physicians were more likely to wait longer for surgery and had a 43% higher incidence of falls within 90 days following ocular biometry compared to those under low-testing physicians.
- Despite the increased odds of falls in high-testing patients, after controlling for the waiting time for surgery, the difference in fall risk diminished, suggesting that the delay itself could be a significant factor.
Importance: Routine preoperative medical testing is not recommended for patients undergoing low-risk surgery, but testing is common before surgery. A 30-day preoperative testing window is conventionally used for study purposes; however, the extent of routine testing that occurs prior to that point is unknown.
Objective: To improve on existing cost estimates by identifying all routine preoperative testing that takes place after the decision is made to perform cataract surgery.
Objectives: To assess resident cataract surgery outcomes at an academic teaching institution using 2 Physician Quality Reporting System (PQRS) cataract measures, which are intended to serve as a proxy for quality of surgical care.
Design: A retrospective review comparing cataract surgery outcomes of resident and attending surgeries using 2 PQRS measures: (1) 20/40 or better best-corrected visual acuity following cataract surgery and (2) complications within 30 days following cataract surgery requiring additional surgical procedures.
Setting: An academic ophthalmology center.
Purpose: The aim of this study was to report outcomes of type I Boston keratoprosthesis (KPro) as primary corneal surgery in nonautoimmune corneal disorders.
Methods: In this retrospective, observational, large single-center case series of 43 eyes (37 patients) that were followed for an average of 39 months (1-6 years), primary implantation of the type I Boston KPro was performed in all patients. Visual acuity at year 1, visual acuity at last follow-up, and postoperative complication rates were examined for all eyes.
Purpose: To determine the sensitivity of the Bielschowsky head-tilt test and other commonly used criteria in identifying patients with true bilateral superior oblique paresis.
Design: A retrospective chart review was performed to identify patients seen between 1978 and 2009 who were diagnosed with acquired bilateral superior oblique paresis.
Methods: All patients had a confirmed history of head trauma or brain surgery with altered consciousness followed by symptomatic diplopia.
Purpose: To determine whether patients historically diagnosed with bilateral superior oblique paresis (BSOP) categorized into (1) immediate-onset and (2) gradual-onset torsional diplopia groups are also distinguishable on the basis of patterns of subjective misalignment in various directions of gaze, consistent with the gradual-onset group being caused by sensory extorsion rather than by BSOP.
Methods: The medical records of all patients diagnosed with BSOP, V-pattern esotropia, or V-pattern exotropia between 1978 and 2009 were retrospectively reviewed. Those patients with torsional diplopia were classified into immediate- or gradual-onset diplopia groups.
Keratoconus is a bilateral, non-inflammatory corneal ectasia characterized by progressive conical thinning and protrusion of the cornea. Its etiology has long been believed to be multifactorial, with environmental, behavioral, and genetic factors all contributing to the disease process. This review focuses specifically on examining the evidence that supports a genetic basis for keratoconus.
View Article and Find Full Text PDFPurpose: To study the prevalence, microbial profile, and risk factors for ocular involvement in patients with candidemia.
Methods: The records of all inpatient consultations requested at the Brigham and Women's Hospital from October 2009 to June 2011 to evaluate for ocular involvement in patients with candidemia were retrospectively reviewed.
Results: Forty-nine consults were requested to rule out ocular involvement in patients with candidemia.