Publications by authors named "Nikolaos Trakos"

Purpose: The purpose of this study is to investigate the histopathological changes in the lacrimal drainage system of rabbits following the application of 1% topical 5-fluorouracil (5-FU) for 4 weeks.

Methods: Ten eyes of 10 healthy New Zealand white rabbits were subjected to topical instillation of 1% (10 mg/mL) 5-FU, 1 drop 4 times a day for 4 weeks. Rabbits underwent a detailed ocular examination including eyelids, ocular surface, punctal, peri-punctal changes, and nasolacrimal duct patency at baseline and after 4 weeks of 5-FU.

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Background: To describe the preparation of a rabbit lacrimal canalicular injury model, assess the canalicular healing, and determine the suitability of this model to study the biophysical changes of mono-canalicular stents.

Methods: Twelve canaliculi of twelve eyes of six healthy New Zealand white rabbits were included in the study. A canalicular injury model was prepared under general anesthesia.

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Purpose: To investigate the histopathological and ultrastructural changes in the lacrimal glands (LGs) of rabbits following either botulinum toxin (BTX) injection or simple glandular needling.

Methods: Twenty-four LGs of 24 eyes of 12 healthy New Zealand white rabbits were included in the study. Of these, 4 LGs of 4 eyes of 2 rabbits were used as controls.

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Dry eye disease (DED) is one of the most frequent ophthalmological conditions, with a major impact on patients' quality of life. Tear film instability and tear hyperosmolarity are considered to play a crucial role in the vicious cycle of dry eye disease. They occur as a result of, either a reduced lacrimal secretion or an excessive evaporation from the tear film.

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Calcinosis cutis is a rare metabolic disorder characterized by cutaneous and subcutaneous deposition of insoluble calcium salts. Ocular adnexal involvement is uncommon but mostly seen in males and in the upper eyelid. Solitary lesions are more common than multiple.

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Purpose: To evaluate the wrinkle-reducing effects of 4-MHz radiofrequency (RF) energy applied to human periorbital, frontal, and midface facial skin using clinical wrinkle grading, patient self-satisfaction survey, and limited histologic studies.

Methods: Thirty-two patients, ranging from 29 to 71 years of age with skin types varying from class I to class III using the Fitzpatrick Wrinkle Classification system, underwent 8 weekly treatment sessions of nonablative RF therapy on the periorbital, frontal, and midface regions and were subjected to follow up for 6 months after treatment. Pretreatment and post-treatment evaluations were compared.

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Purpose: To describe a modification of the retrograde intubation dacryocystorhinostomy (DCR) in patients with proximal canalicular obstruction.

Materials And Methods: Interventional case report of a 43-year-old female with a nine-month history of left epiphora following a road traffic accident involving the proximal lower canaliculus. An external DCR approach was performed.

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Purpose: Study on cell growth on the posterior capsule after implantation of hydrophobic acrylic (Acrysof SA 60 AT) and hydrophilic acrylic (Akreos Disc) intraocular lenses (IOL) in a rabbit model and comparison of posterior capsule opacification (PCO).

Methods: Phacoemulsification was performed in 22 rabbit eyes, and two different IOL types (Acrysof SA60 AT and Akreos Disc) were implanted. These IOLs had the same optic geometry (square edged) but different material and design.

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Background: The frequency and spectrum of ophthalmologic manifestations in patients with inflammatory bowel disease (IBD) has been reported to vary among studies; however, rare and silent manifestations have not been extensively studied.

Methods: This was a prospective study of 60 patients diagnosed with IBD who underwent full ophthalmologic examination, including visual acuity, slit lamp examination of the anterior segments, intraocular pressure, and fundus examination accompanied by color photography. Thirty-seven (61,7%) patients were diagnosed with ulcerative colitis (UC) and 23 (38,3%) with Crohn's disease (CD).

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