Publications by authors named "Pisit Preechawat"

Purpose: To analyze radiological characteristics of the extraocular muscles (EOMs) in myasthenia gravis (MG) patients with ocular manifestations.

Patients And Methods: This retrospective case-control study included all MG cases with ocular manifestations, who attended a neuro-ophthalmology clinic at a university hospital, Bangkok, from April 2009 to June 2018. They experienced double vision and ophthalmoplegia.

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Introduction: Acute optic neuritis (ON) has been increasingly reported in patients infected with human immunodeficiency virus (HIV). We aimed to describe clinical characteristics of HIV-infected patients with ON.

Materials And Methods: This observational retrospective study was performed from January 2008 to January 2016 in a university hospital in Bangkok, Thailand.

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Purpose: To analyze the demographic patterns, clinical characteristics and etiologies of acute optic neuritis (ON).

Methods: This retrospective observational study included patients with acute ON who presented to a university hospital in Bangkok, Thailand, between January 2010 and March 2020. The demographic details, clinical characteristics and etiologies of acute ON were evaluated.

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Purpose: To evaluate the initial treatment response to low doses of prednisolone, compared with moderate doses, in ocular myasthenia gravis (OMG).

Patients And Methods: A retrospective chart review of patients with adult-onset (age ≥15 years old) OMG, who were treated with prednisolone, was conducted. Subjects were divided into two groups according to their prednisolone dosing regimen.

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We report 7 cases of syphilitic optic neuropathy during a 2-year period. All patients were newly diagnosed with human immunodeficiency virus (HIV) infection. Six cases (86%) initially presented with swollen optic disc either unilaterally or bilaterally.

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Primary optic nerve sheath meningioma (PONSM) is extremely rare among children. We report two cases of pediatric PONSM. The first case was a 12-year-old boy who presented with gradual visual loss of his right eye and was found to be associated with neurofibromatosis type 2.

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Giant cell arteritis is a systemic granulomatous vasculitis affecting medium to large arteries. An arteritic anterior ischemic optic neuropathy is the most common cause of permanent visual loss. Giant cell arteritis is very rare among Asians.

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A 46-year-old man was diagnosed with obstructive sleep apnea and began using a nasal continuous positive airway pressure (CPAP) during sleep for a month. He presented with the complaint of a painful blurred vision in his left eye upon awakening two days earlier. His visual acuity was 20/25 both eyes.

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Purpose: To describe the results of intralesional injection of the sclerosing agent sodium tetradecyl sulfate in patients with orbital lymphangioma.

Methods: Four young patients with a history of orbital lymphangioma were treated on one or more occasions with percutaneous puncture and injection of sodium tetradecyl sulfate under computed tomography guidance. Resolution of the signs and symptoms, complications resulting from surgery, and recurrence of bleeding were studied.

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Objective: To describe the ocular findings, endovascular treatment, and clinical outcome in patients with dural carotid cavernous sinus fistula (CCF).

Material And Method: A retrospective evaluation of 80 consecutive patients who underwent examination and treatment for dural CCF between January 1997 and December 2004 was performed.

Results: Fifty females and 30 males, with an average age of 49 years (from 6 -80 years) participated in this study.

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Purpose: To characterize anterior ischemic optic neuropathy (AION) in patients younger than 50 years.

Design: Retrospective study.

Methods: Records of all AION patients seen between 1989 and 2006 were reviewed.

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Objective: To review the clinical and microbiological profile in patients with contact lens-related microbial keratitis (CLRMK).

Material And Method: Hospital records of 435 patients with a diagnosis of microbial keratitis seen at Ramathibodi Hospital from January 1998 to December 2002 were retrospectively reviewed. All patients with CLRMK were included in the present study.

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Purpose: The aim of this study was to compare the effects of topical nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroid, doxycycline, and artificial tears for the treatment of ocular surface damage in the Botulinum toxin B (BTX-B)-induced mouse model of dry eye.

Methods: CBA/J mice were randomized into 2 experimental groups of 35 animals each. The control group received a transconjunctival injection of 0.

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A 16-year-old Thai girl presented with acute unilateral visual loss, proptosis, and ophthalmoparesis. CT demonstrated thickening and enhancement of orbital tissues including the orbital apex. A history of consumption of raw fish, together with the findings of cutaneous migratory swelling and eosinophilia, made the diagnosis of gnathostomiasis likely.

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Objective: To determine the site of muscle enlargement in thyroid-associated ophthalmopathy and optic neuropathy in Ramathibodi Hospital.

Material And Method: Data and images of MRI and CT of patients with thyroid-associated ophthalmopathy were retrospectively reviewed Neuro-ophthalmologic data and correlation to the imaging findings were analyzed.

Results: Among 19 patients with thyroid-associated ophthalmopathy, 20 imaging studies were collected.

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Purpose: To investigate the use of amniotic membrane graft for socket reconstruction in cases in which forniceal shortening by scar or symblepharon formation has made it difficult to successfully wear an ocular prosthesis.

Methods: A retrospective analysis of 20 contracted eye sockets that underwent forniceal reconstruction with amniotic membrane graft from 1997 to 2001.

Results: There were 8 male and 12 female patients, with an age range between 2 and 66 years.

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Objective: To identify the result of retrobulbar triamcinolone injection in patients with thyroid associated orbitopathy

Material And Method: Prospective noncomparative pilot study in 27 eyes of 19 patients who had been diagnosed as thyroid associated orbitopathy during October 2000 through April 2002. The patients received retrobulbar 40 mg triamcinolone treatment for each orbit weekly, totaling 4 applications.

Results: Three months after treatment, most of the patients demonstrated no significant change in visual acuity and visual field.

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To study the clinical characteristics, treatment and outcome of patients with aneurysmal third nerve palsy. Eleven patients with isolated third nerve palsy from an intracranial aneurysm from 1998 to 2002 at Ramathibodi Hospital were reviewed retrospectively. The average age was 60 years.

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