Publications by authors named "Packo K"

Purpose: This work analyzes data from a series of surveys developed by the American Society of Retina Specialists (ASRS) that assesses the impact of COVID-19 on physicians, their practices, and their patients.

Methods: Five surveys were sent by the ASRS between March and July 2020 to more than 2600 US and international retina specialists. Data and trends from these surveys were analyzed.

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The coexistence of fundus torpedoes and Gardner syndrome was initially reported in 1989 and 1992 by Gass and Roseman. Gardner syndrome is a dominantly inherited disease characterized by a multitude of potentially lethal gastrointestinal polyps. Over the ensuing quarter century, several publications demonstrated uncommon, but easily recognized, fundus lesions called Torpedo Maculopathy in apparently normal individuals.

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Purpose: To assess the immunohistochemical and histopathological changes in a subject with Autosomal Dominant Vitreoretinochoroidopathy (ADVIRC).

Design: Case study.

Participant: Ninety two year-old Caucasian male with ADVIRC.

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Background: Mutations in BEST1 account for autosomal dominant vitreoretinochoroidopathy (ADVIRC), a rare inherited retinal dystrophy with presenile cataracts and incomplete anterior segment development. The long-term clinical findings and visual prognosis of these patients continues to evolve over time.

Materials And Methods: The retina was assessed by fundus photography, fluorescein angiography, and spectral domain optical coherence tomography.

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Diabetic macular edema (DME) is one of the most common causes of vision loss in patients who have diabetes, and all of these patients are at risk for developing DME. The onset is often painless, difficult to detect, and can occur at any stage of diabetes. Ideally, DME is preventable, but treatment must be considered when preventative methods fail.

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Purpose: To describe a new classification of stellate nonhereditary idiopathic foveomacular retinoschisis (SNIFR).

Design: Retrospective case series and literature review.

Participants: A total of 17 patients from 5 institutions.

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Myopic macular retinoschisis is a source of visual impairment in patients with high myopia. Many patients present with progressive visual loss or increasing distortion. Some eyes progress to macular hole or foveal retinal detachment, causing further vision loss.

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Purpose: The purpose of this was to describe the clinical improvement of chronic central serous chorioretinopathy in a patient treated with rifampin for tuberculosis.

Methods: A 54-year-old Hispanic man with a distant history of pulmonary tuberculosis presented with reduced vision in the right greater than left eye for over 1 year. He had diffuse chorioretinopathy in both eyes and a serous retinal detachment in his right eye.

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Purpose: The purpose of the study was to report a unique case that suggests a communication between a colobomatous eye and the orbit.

Methods: Case report.

Patients: Eleven-year-old girl.

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Purpose: To evaluate the safety and efficacy of a preoperative intravitreous injection of microplasmin in patients scheduled for vitreous surgery.

Design: Phase 2, multicenter, placebo-controlled, double-masked, parallel-group, dose-ranging clinical trial.

Participants: One hundred twenty-five patients scheduled for pars plana vitrectomy (PPV), primarily for treatment of either vitreomacular traction or macular hole.

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Purpose: To assess the ability of the Preferential Hyperacuity Perimeter (PreView PHP; Carl Zeiss Meditec, Dublin, CA) to detect recent-onset choroidal neovascularization (CNV) resulting from age-related macular degeneration (AMD) and to differentiate it from an intermediate stage of AMD.

Design: Prospective, comparative, concurrent, nonrandomized, multicenter study.

Participants: Eligible participants' study eyes had a corrected visual acuity of 20/160 or better and either untreated CNV from AMD diagnosed within the last 60 days or an intermediate stage of AMD.

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Objective: To evaluate the anatomic and visual outcomes after a surgical procedure for displacement of thick submacular hemorrhage in patients with age-related macular degeneration.

Design: Retrospective, noncomparative, interventional case series.

Participants: Twenty-nine consecutive eyes of 28 patients with thick submacular hemorrhage secondary to age-related macular degeneration.

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Objective: To determine the safety and efficacy of the artificial silicon retina (ASR) microchip implanted in the subretinal space to treat vision loss from retinitis pigmentosa.

Methods: The ASR microchip is a 2-mm-diameter silicon-based device that contains approximately 5000 microelectrode-tipped microphotodiodes and is powered by incident light. The right eyes of 6 patients with retinitis pigmentosa were implanted with the ASR microchip while the left eyes served as controls.

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Purpose: To report a series of 15 eyes with rhegmatogenous retinal detachment and proliferative vitreoretinopathy (PVR) or at high risk for advanced PVR, which underwent pars plana vitrectomy (PPV) and lensectomy (PPL) with preservation of the anterior capsule.

Design: Retrospective noncomparative case series.

Participants: Fifteen consecutive patients with retinal detachment and varying degrees of PVR in one eye.

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Purpose: To determine whether propranolol can decrease surgical tremor and anxiety in residents performing ocular microsurgery without impairing patient or physician safety.

Methods: In this randomized, double-masked, crossover study, 5 third-year ophthalmology residents ingested a capsule containing either propranolol, 40 mg, or placebo 1 hour prior to performing ophthalmic microsurgery. All residents were healthy men under age 30 years.

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Purpose: To evaluate the safety and efficacy of transscleral diode laser for retinopexy in rhegmatogenous retinal detachment surgery in a multicenter trial.

Methods: Seventy-two patients with primary rhegmatogenous retinal detachments were enrolled. No patient with chronic detachment, a retinal break greater than 90 degrees, history of uveitis or infectious retinopathy, or proliferative vitreoretinopathy was enrolled.

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Purpose: The purpose of the study is to assess the hospital charges associated with the treatment of endophthalmitis using a sample of patients from the Endophthalmitis Vitrectomy Study (EVS).

Methods: The Endophthalmitis Vitrectomy Study was a multicenter, randomized clinical trial with a two-by-two factorial design to compare immediate pars plana vitrectomy to tap-biopsy and to compare the use of systemic antibiotics (intravenous) to no intravenous antibiotics in the management of postoperative endophthalmitis. Hospital charge data were collected retrospectively from 129 patients from the 4 clinical centers participating in this ancillary study.

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Purpose: To evaluate the safety and efficacy of transscleral diode laser for retinopexy in rhegmatogenous retinal detachment surgery in a multicenter trial.

Design: 67 patients with primary rhegmatogenous retinal detachment underwent scleral buckling surgery, using transscleral diode laser for retinopexy, at five study centers.

Study Participants: 72 patients with primary rhegmatogenous retinal detachments were enrolled.

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Sixteen dogs with giant retinal tears resulting in total retinal detachment (360 degrees) underwent unilateral retinal reattachment surgery. In all dogs, complete vitrectomy was performed, and in most, perfluorooctane liquid was used to unroll and flatten the detached retina. Stainless steel tacks were used to anchor the retina to the choroid and sclera.

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Propofol is an intravenous anesthetic agent that was approved by the US Food and Drug Administration in October 1989. It has gained rapid acceptance and is in widespread use. In June 1990, the Centers for Disease Control reported four clusters of postsurgical infections associated with the use of propofol.

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