Publications by authors named "Dana Hornbeak"

Introduction: This study evaluated 10-year results of implanting one iStent trabecular micro-bypass stent during cataract surgery in eyes with open-angle glaucoma (OAG) or ocular hypertension.

Methods: This retrospective, non-randomized study examined 10-year outcomes of iStent trabecular micro-bypass stent implantation with cataract surgery by one surgeon in eyes with OAG [including primary OAG (POAG) and pseudoexfoliative glaucoma (PXG)] or ocular hypertension at a multi-specialty German ophthalmology center. Study visits were conducted preoperatively and at 2.

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Article Synopsis
  • The study analyzes the long-term effects of iStent technologies on glaucoma progression, focusing on visual field changes and intraocular pressure (IOP) reduction.
  • Out of fifteen identified studies involving 1115 eyes, the implantation of iStent devices led to an average IOP reduction of 26.6% over a follow-up period of nearly 38 months.
  • The findings indicate that the mean rate of visual field progression for patients using iStent was -0.024 dBs/year, comparable to healthy eyes and less than progression rates in those treated with medication for glaucoma.
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Article Synopsis
  • The iStent Infinite Trabecular Micro-Bypass System is effective for reducing intraocular pressure in patients with open angle glaucoma (OAG) who haven't responded well to other treatments.
  • In a clinical trial with 72 patients, 76.1% achieved a significant pressure reduction at 12 months, with a mean decrease in pressure of about 5.9 mm Hg.
  • The procedure showed a favorable safety profile, with most patients maintaining or reducing their need for medication after surgery.
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Purpose: To examine effectiveness outcomes stratified by preoperative disease burden in the pivotal trial of iStent with cataract surgery (INJ) vs cataract surgery alone (CS).

Materials And Methods: Prospective, 3:1 randomized, single-masked, concurrently-controlled, multicenter trial enrolling 505 subjects with cataract and mild-to-moderate primary open-angle glaucoma who underwent iStent implantation with phacoemulsification or phacoemulsification alone, and were followed for 2 years including annual medication washouts. Post hoc stratification was completed for baseline mean diurnal intraocular pressure (BL DIOP; Low-DIOP <25mmHg, Mid-DIOP ≥25 to <30 mmHg, High-DIOP ≥30mmHg) and preoperative medication burden (Low-Med 1 medication, Mid-Med 2 medications, High-Med ≥3 medications).

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Purpose: Evaluate the safety and effectiveness of an ab interno implanted (iStent inject) Trabecular Micro-Bypass System (Glaukos Corporation, San Clemente, CA) in combination with cataract surgery in subjects with mild to moderate primary open-angle glaucoma (POAG).

Design: Prospective, randomized, single-masked, concurrently controlled, multicenter clinical trial.

Participants: Eyes with mild to moderate POAG and preoperative intraocular pressure (IOP) ≤24 mmHg on 1 to 3 medications, unmedicated diurnal IOP (DIOP) 21 to 36 mmHg, and cataract requiring surgery.

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Purpose: To assess 5-year outcomes after implantation of 1 trabecular microbypass stent during cataract surgery in eyes with open-angle glaucoma (OAG) or ocular hypertension.

Setting: Private ophthalmology clinic (AaM Augenklinik am Marienplatz, Munich, Germany).

Design: Prospective nonrandomized consecutive case series.

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Introduction: This study evaluates long-term outcomes of two trabecular micro-bypass stents, one suprachoroidal stent, and postoperative prostaglandin in eyes with refractory open angle glaucoma (OAG).

Methods: Prospective ongoing 5-year study of 80 eligible subjects (70 with 4-year follow-up) with OAG and IOP ≥ 18 mmHg after prior trabeculectomy and while taking 1-3 glaucoma medications. Subjects received two iStent trabecular micro-bypass stents, one iStent Supra suprachoroidal stent, and postoperative travoprost.

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Purpose: Evaluate long-term outcomes after one, two, or three trabecular micro-bypass stents implanted in a standalone procedure in eyes with open-angle glaucoma taking ocular hypotensive medication.

Patients And Methods: Prospective randomized ongoing study of 119 subjects (109 with 42-month follow-up) with open-angle glaucoma, preoperative intraocular pressure (IOP) 18-30 mmHg on one to three glaucoma medications, and unmedicated (post-washout) IOP 22-38 mmHg. Subjects were randomized to receive one (n=38), two (n=41), or three (n=40) iStent trabecular micro-bypass stents in a standalone procedure.

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Importance: Additional data are sought regarding treatment options for glaucoma, a major cause of global blindness.

Background: The study assessed outcomes following standalone implantation of two second-generation trabecular micro-bypass stents and postoperative topical prostaglandin in eyes with open-angle glaucoma not controlled on two preoperative medications.

Design: The study design is a prospective, nonrandomized, open-label study at a tertiary-care ophthalmology centre.

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Purpose: To evaluate the long-term intraocular pressure (IOP)-lowering effect and safety parameters following treatment with two trabecular micro-bypass stents and topical prostaglandin in phakic eyes with open-angle glaucoma (OAG) not controlled on two preoperative medications.

Methods: This prospective, single-arm, unmasked study enrolled 39 qualified phakic eyes with OAG not controlled on 2 medications, preoperative medicated IOP of 18-30 mmHg, and IOP following medication washout of 22-38 mmHg. Two trabecular micro-bypass stents were implanted as a standalone procedure, and travoprost was started on postoperative day 1.

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Purpose: The purpose of this study was to evaluate intraocular pressure (IOP) and topical ocular hypotensive medication burden at 12 months postoperatively in a predominantly Hispanic patient population with primary open-angle glaucoma each implanted with one trabecular micro-bypass stent during cataract surgery.

Methods: This was a retrospective, consecutive case series. The main objective was to assess reduction of IOP and/or medication burden in all eyes at the 12-month postoperative exam.

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Article Synopsis
  • The study evaluated the effectiveness of two second-generation trabecular micro-bypass stents in reducing intraocular pressure (IOP) in patients with open-angle glaucoma (OAG) who were on one preoperative medication.
  • Fifty-seven phakic eyes underwent the stent implantation, and significant improvements were observed, including a 42% reduction in mean unmedicated IOP at 12 months, maintaining results at 18 months.
  • The results showed a 100% success rate in achieving at least a 20% IOP reduction without medication, alongside a favorable safety profile.
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Objective: To describe risk factors for hypotony in patients with juvenile idiopathic arthritis (JIA)-associated uveitis.

Design: Retrospective cohort study.

Methods: All patients with JIA-associated uveitis (N = 108; affected eyes = 196) evaluated and followed at the Wilmer Eye Institute from July 1984 through June 2014 were included in this study.

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Article Synopsis
  • The study analyzed the frequency of ocular hypertension (OHT) and secondary glaucoma (SG) in patients with juvenile idiopathic arthritis (JIA) who have uveitis, as well as the factors influencing these conditions and their impact on vision.
  • Around 40% of patients presented with OHT or SG, leading to a significantly higher risk of legal blindness compared to those without these conditions.
  • Key risk factors for OHT included anterior uveitis, active inflammation, and systemic corticosteroid use, while immunosuppressive medication appeared to lower the risk; similar risk factors were noted for SG.
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Purpose: To summarize the available published data regarding the treatment of JIA-associated chronic uveitis.

Methods: Available peer-reviewed publications regarding the treatments of JIA-associated uveitis were read by multiple authors (RMA, EM, JET, and DH) and the data from these reports were synthesized for this review.

Results: Juvenile idiopathic arthritis (JIA)-associated chronic uveitis is a significant cause of ocular morbidity and visual impairment in children, often resulting in more frequent complications and worse visual outcomes than other types of pediatric uveitis.

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Ocular inflammation is a significant cause of ocular morbidity and visual impairment. Topical, periocular, intraocular, and systemic corticosteroids are highly effective for treating appropriate forms of ocular inflammation. However, their use may be constrained by local and/or systemic side effects, especially if long-term therapy is required.

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Purpose: To evaluate the reliability of clinical grading of vitreous haze using a new 9-step ordinal scale versus the existing 6-step ordinal scale.

Design: Evaluation of diagnostic test (interobserver agreement study).

Participants: A total of 119 consecutive patients (204 uveitic eyes) presenting for uveitis subspecialty care on the study day at 1 of 3 large uveitis centers.

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Thyroid eye disease (TED) is an autoimmune inflammatory disorder that affects the extraocular soft tissues and causes eyelid retraction, proptosis and restrictive extraocular myopathy. Compressive optic neuropathy from extraocular muscle enlargement occurs in less than 5% of patients, in the majority of whom it develops within 18 months of the diagnosis of hyperthyroidism. Vision loss from compressive optic neuropathy in patients with thyroid eye disease is usually bilateral and insidious in onset and progression and is associated with diplopia and elevated intraocular pressure.

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Introduction: This study records the prevalence and patterns of breastfeeding in Singaporean Chinese mothers who gave birth between 2000 and 2008.

Materials And Methods: The Strabismus, Amblyopia and Refractive Error in Singaporean Children (STARS) study is a population-based survey conducted in South-Western Singapore. Disproportionate random sampling by 6-month age groups of Chinese children born from 2000 to 2008 was performed.

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Purpose: To determine the prevalence of refractive error types in Singaporean Chinese children aged 6 to 72 months.

Methods: The Strabismus, Amblyopia and Refractive Error in Singaporean Children (STARS) is a population-based study in southwest Singapore. Door-to-door recruitment of participants was used, with disproportionate random sampling in 6-month increments.

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Purpose Of Review: Myopia, or nearsightedness, is the most common human eye disorder in the world and is a significant global public health concern. Along with cataract, macular degeneration, infectious disease, and vitamin A deficiency, myopia is one of the most important causes of visual impairment worldwide. Severe or high-grade myopia is a leading cause of blindness because of its associated ocular comorbidities of retinal detachment, macular choroidal degeneration, premature cataract, and glaucoma.

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