Publications by authors named "Qiang Ed Zhang"

: Physical activity in adolescence plays an important role in reducing the lifetime risk of chronic disease. Recent studies have shown that individuals with amblyopia may have difficulties with coordinating balance and may be at greater risk of developing fine motor impairments. The purpose of this study was to determine if there is an association between the presence of amblyopia and physical activity (PA) in adolescents.

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Purpose: To determine the sensitivity of various clinical tests in the diagnosis of convergence insufficiency.

Methods: A total of 254 patients were recruited with complaints consistent with convergence problems but no prior history of strabismus surgery, eye exercises, prism use, recent concussion, or other ocular or neurological diseases. Each patient completed the convergence insufficiency symptom survey (CISS), and the following data were collected: ocular alignment at distance and near, convergence and divergence fusional amplitudes at distance and near, near-point of convergence (NPC) using an accommodative target and red lens, and assessment of quality of convergence movement (QoCM) and quality of fusional movements (QoFM).

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Purpose: To evaluate prevalence of thyroid eye disease (TED) and associated factors in the American Academy of Ophthalmology IRIS Registry (Intelligent Research in Sight).

Design: Cross-sectional analysis of the IRIS Registry.

Methods: IRIS Registry patients (18-90 years old) were classified as TED (ICD-9: 242.

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Purpose: To estimate incidence and evaluate demographic risk factors and visual acuity (VA) outcomes of open-globe injuries requiring surgical repair in the IRIS® Registry (Intelligent Research in Sight).

Design: Retrospective cohort study.

Participants: Patients with open-globe injury repairs (OGRs) were identified by Current Procedural Terminology codes (65275, 65280, 65285, 65286, 65235, 65260, and 65265) from 2014 through 2018 in the IRIS Registry.

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Article Synopsis
  • A study was conducted to assess the effectiveness of a low-technology virtual vision screening method for pediatric patients during an outreach program in Philadelphia.
  • Out of 475 children screened virtually, 151 were analyzed after in-person examinations, showing moderate to strong correlations between virtual and in-person visual acuity results.
  • Results indicated that the virtual screening was a reliable method, as most children received glasses prescriptions, and some were referred for further ophthalmic evaluations, highlighting the need for future refinement in virtual screening approaches for better ophthalmic care access.
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Purpose: To report clinical outcomes and risk factors for glaucoma in children and adolescents referred for increased cup:disk ratios (CDRs) to a tertiary referral center.

Methods: This retrospective, single-center study examined all pediatric patients evaluated for increased CDR at Wills Eye Hospital. Patients who had previous known ocular disease were excluded.

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Purpose: To investigate the effect of gender, type, and size of horizontal deviation on the perceived severity or need for intervention for strabismus among adults in the general population.

Methods: Eight photographs of individuals aged 25 to 35 years were digitally manipulated to create 30 prism diopters (PD) of exotropia, 30 PD of esotropia, 50 PD of exotropia, and 50 PD of esotropia in both men and women. A survey asked respondents to rank these photographs by their severity or need for intervention from 1 (greatest need) to 8 (least need) to assess for unconscious bias for gender, strabismus type, or deviation size.

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Purpose: To define potential factors that influence the perceived urgency of strabismus surgery with a specific focus on the contributions of gender, degree of strabismus, and direction of strabismus.

Methods: An electronic survey was sent to members of the American Association for Pediatric Ophthalmology and Strabismus (AAPOS). Respondents provided demographic information and ranked eight photographs of adults digitally altered to create varying degrees of strabismus according to perceived urgency for surgery.

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Purpose: To determine the clinical use patterns of control scores for intermittent exotropia. The Newcastle Control Score, Pediatric Eye Disease Investigator Group (PEDIG) score, and Look And Cover, then Ten seconds of Observation Scale for Exotropia (LACTOSE) Control Score were developed to quantify control of exodeviations.

Methods: A short survey was posted on the American Association for Pediatric Ophthalmology and Strabismus forum in August and September 2021.

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Importance: Individuals with perceived experience and expertise are invited by editorial boards to provide commentary through editorials. Female representation among editorialists is not yet defined.

Objective: To determine female representation as editorial authors in 3 high-impact general ophthalmology journals.

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Background: Rebound tonometry (RBT) can be used to measure intraocular pressure (IOP) in children unable to tolerate measurement with applanation tonometry (AT) while awake. RBT readings are often 2-3 mm Hg higher than AT. We have experienced children with a repeatedly higher difference between RBT and AT measurements (≥6 mm Hg).

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Purpose: To compare 2 mg intravitreal triamcinolone (IVT) versus 40 mg posterior sub-Tenon triamcinolone acetonide (STT) for the treatment of eyes with pseudophakic cystoid macular edema.

Methods: A retrospective, single-center review of eyes receiving 2 mg IVT between 3/1/2012-3/1/2017 and 40 mg STT between 1/1/2015-3/1/2017. Visual acuity (VA) and central macular thickness (CMT) were recorded at baseline, 1-, 3-, and 6-month follow-up visits.

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Purpose: This study analyzes the content quality and characteristics of the most popular and highly ranked search results on the internet related to glaucoma and medical cannabis (MC).

Design: Internet-based, cross-sectional study.

Participants: Not applicable.

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Purpose: Selective laser trabeculoplasty (SLT) is a common procedure to lower intraocular pressure (IOP) in patients with glaucoma. However, reports are conflicting regarding what factors contribute to SLT success. The purpose of this study was to determine predictors of SLT success.

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Unlabelled: PRéCIS:: Intracameral injection of viscoelastic at the beginning of Ahmed FP7 implantation did not reduce early postoperative complication rates.

Purpose: To evaluate early postoperative complication rates after a modified technique in which the anterior chamber (AC) is filled with viscoelastic at the beginning of Ahmed FP7 implantation before conjunctival peritomy.

Subjects And Methods: A retrospective chart review was performed of eyes that underwent Ahmed FP7 implantation with or without viscoelastic fill to ~20 mm Hg by finger tension by a single surgeon (M.

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Background/objectives: Patients with ophthalmic emergencies often present to emergency rooms. Emergency medicine (EM) physicians should feel comfortable encountering these conditions. We assessed EM physicians' comfort working up, diagnosing, and managing ophthalmic emergencies.

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Purpose: To compare the midterm safety and efficacy profile of winged sutures versus modified Wise closure for fornix-based trabeculectomy.

Design: Retrospective comparative study.

Participants: Consecutive cases that underwent fornix-based trabeculectomy by a single surgeon between January 5, 2015, and May 8, 2017.

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Background: To confirm the treatment effects of concurrent cetuximab plus docetaxel observed in Radiation Therapy Oncology Group (RTOG) 0234 and single out the effect of cetuximab, we designed RTOG 1216, a randomized phase II/III study, which uses an intermediate end point to select the best regimen for definitive testing of survival benefit.

Methods: In phase II, the best regimen should demonstrate statistically significant efficacy against the control with predefined advantage over the competing arm regarding disease-free survival (DFS). We evaluate operating characteristics of the randomized II/III group sequential design through simulations and numerical integrations under the null and various alternative hypotheses.

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Purpose: To identify a recent change in disease severity and visual outcomes of patients with Acanthamoeba keratitis (AK) at Wills Eye Hospital (WEH).

Methods: A retrospective chart review was performed of all cases diagnosed with AK at WEH between January 1, 2009, and December 31, 2015. Failure of treatment was defined as having a final best-corrected visual acuity worse than 20/100 and/or requiring keratoplasty.

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A recent review in this Journal, which criticizes NCCN’s recommendations based, in part, on the RTOG 9501 and the EORTC 22931 trials, warrants comment. We herein provide additional data addressing many of the points and misinterpretations raised in that review which convincingly supports the use of concomitant chemotherapy and radiotherapy in patients with good performance status and high-risk pathologic features after surgery for mucosal head and neck squamous cell carcinoma.

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Purpose: To determine the relationship between p16 status and the regional response of patients with node-positive oropharynx cancer treated on NRG Oncology RTOG 0129.

Methods And Materials: Patients with N1-N3 oropharynx cancer and known p16 status who underwent treatment on RTOG 0129 were analyzed. Pathologic complete response (pCR) rates in patients treated with a postchemoradiation neck dissection (with p16-positive or p16-negative cancer) were compared by Fisher exact test.

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Background: Prospective quality metrics for neck dissection have not been established for patients with head and neck squamous cell carcinoma. The purpose of this study was to investigate the association between lymph node counts from neck dissection, local-regional recurrence, and overall survival.

Methods: The number of lymph nodes counted from neck dissection in patients treated in 2 NRG Oncology trials (Radiation Therapy Oncology Group [RTOG] 9501 and RTOG 0234) was evaluated for its prognostic impact on overall survival with a multivariate Cox model adjusted for demographic, tumor, and lymph node data and stratified by the postoperative treatment group.

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Purpose: To evaluate the severity of cetuximab-induced skin rash and its correlation with clinical outcome and late skin toxicity in patients with head and neck squamous cell carcinoma treated with chemoradiation therapy and cetuximab.

Methods And Materials: Analysis included patients who received loading dose and ≥1 cetuximab dose concurrent with definitive chemoradiation therapy (70 Gy + cisplatin) or postoperative chemoradiation therapy (60-66 Gy + docetaxel or cisplatin).

Results: Six hundred two patients were analyzed; 383 (63.

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