Periorbital Microcystic Adnexal Carcinoma With Distant Metastases.

Purpose: Microcystic adnexal carcinoma (MAC) is a locally aggressive adnexal carcinoma of the head and neck, which has a high tendency for recurrence. MAC rarely has distant metastasis, with only one previously reported case originating from the periorbital region. We present a patient with periorbital MAC with distant metastasis and a review of all reported patients with metastatic disease.

Infantile Sinonasal Tract Myxomas with Orbital Involvement: Presentation of Two Cases and Comprehensive Literature Review.

Our aim is to present two cases of infantile sinonasal tract myxoma with orbital involvement and conduct a comprehensive literature review of the topic. We aim to provide a summary of the presentation of infantile sinonasal tract myxomas to effectively aid clinicians in considering this rare entity as a potential diagnosis. We present a case series and a retrospective review of the published literature in the English language.

Periocular manifestations of blepharocheilodontic syndrome and their management: case series and literature review.

Purpose: Blepharocheilodontic (BCD) syndrome is a rare condition with eyelid ectropion, euryblepharon, lagophthalmos, congenital cleft lip/palate, and oligodontia. BCD syndrome is an autosomal dominant inherited disorder and has multiple associations with systemic diseases. We present three new cases of BCD syndrome and a literature review of the periocular manifestations of BCD and their management.

Orbital Myeloma and Plasmacytoma: An Australian Study.

Purpose: The purpose of this study was to provide Australian data on the clinical and radiological features and outcomes in patients with orbital plasmacytomas.

Methods: Multicentre retrospective review of orbital plasmacytoma and orbital involvement in multiple myeloma (MM) from 2005 to 2022 in Australia.

Results: Twenty-one participants were identified.

Orbital necrobiotic xanthogranuloma with necrotizing scleritis and absent cutaneous manifestations.

Necrobiotic xanthogranuloma (NXG) is a rare systemic disease, that commonly manifests with orbital and ocular adnexal involvement, presenting with periocular yellow papules and plaques that may ulcerate. Periorbital skin lesions are a hallmark of the disease, and in their absence the diagnosis may be delayed, preventing prompt systemic evaluation and appropriate treatment of this condition. We report a unique case of a 58-year-old female patient with NXG that presented with severe bilateral necrotizing scleritis, left orbital mass and no cutaneous manifestations of NXG.

Selective Oxidation of Cyclohexene over the Mesoporous H-Beta Zeolite on Copper/Nickel Bimetal Catalyst in Continuous Reactor.

The copper/nickel-metal on commercial H-Beta zeolite supports was synthesized with different wt % (Ni) of 5, 10, 15, and 20, and was used in the cyclohexene epoxidation process. The synthesized catalyst has been used in a continuous reactor for the cyclohexene epoxidation process, with mild conditions and HO as an oxidant. The catalytic performance was ascertained by adjusting parameters such as the temperature, pressure, WHSV, reaction time, and solvents.

Merkel Cell Carcinoma Metastases to Caruncle With Orbital Extension: Report and Literature Review.

Merkel cell carcinoma (MCC) is an uncommon and aggressive skin cancer of neuroendocrine origin. The tumor usually presents with a locoregional spread and most frequently metastasizes to the skin, liver, bone, lung, and brain. Despite the orbit being a relatively common site of metastases, it has rarely been reported in patients with MCC.

Corneal Neurotization for Neurotrophic Keratopathy: A Multicenter Experience.

Purpose: Corneal neurotization is an emerging technique that offers potential for visual rehabilitation in neurotrophic keratopathy. This study reports on a multicenter experience and outcomes for both direct and indirect methods of corneal neurotization.

Methods: Retrospective case series.

Isolated Orbital Apex Mucocele: A Case Study and Literature Review.

Isolated orbital mucocele without connection between the mass and paranasal sinuses is extremely rare and poorly understood. Literature review of these cases are very few and present more anteriorly in the orbit. Here, the authors present a 33-year-old female with an isolated left orbital apex mucocele without direct communication with the adjacent paranasal sinuses and other vital orbital structures.

Recurrence Following Globe Sparing Excision for Basal Cell Carcinoma with Anterior Orbital Invasion.

Purpose: Globe-sparing excision for periocular basal cell carcinoma (BCC) with orbital invasion has evident benefits, but the ensuing morbidity and characteristics of recurrence are not well elucidated. This study aims to describe the extent of visual morbidity following globe-sparing excision, and the clinicoradiological characteristics of tumor recurrence.

Methods: Multicentre retrospective case series.

Yolk sac tumours of the orbit and sinonasal tract.

Purpose: The aim of this study is to report two cases of paediatric Yolk sac tumours (YST) of the orbit and sinonasal tract, with a major review on the subject.

Methods: Two case reports along with a comprehensive retrospective literature review of all English language publications between 1974 and 2021 is presented. Literature review examined the demographics, clinical presentation and diagnostic and prognostic factors of extragonadal YSTs of the orbit and sinonasal tract.

Minimally invasive, indirect corneal neurotization using an ipsilateral sural nerve graft for early neurotrophic keratopathy.

Purpose: Neurotrophic keratopathy is a degenerative disease characterized by damage to the corneal nerves leading to corneal hypoesthesia and anaesthesia. The resultant progressive visual deterioration is refractory to existing conventional treatment options. Corneal neurotization is a novel and effective surgical procedure that directly targets the underlying pathology of nerve loss by stimulating new corneal nerve growth.

Orbital and Sinonasal Complications of Hydrogel Scleral Buckle: A Case Report.

The hydrogel scleral buckle is a hydrophilic implant that is characterized by progressive expansion and can present with secondary orbital changes. The authors present a unique case of hydrogel-induced erosion of the orbital roof into the frontal sinus, with formation of a sino-orbital communication that resulted in frontal sinusitis and adjacent cerebritis. The hydrogel material is radiologically characterized as a fluid-filled hypertense T2 mass with rim enhancement and peripheral calcification.

Anatomy of the lateral orbital wall: A topographic investigation for identification of the lateral canthal attachment.

Background: There is a growing effort to develop implantable bionics for restoring eye closure in paralytic lagophthalmos. Knowledge of the natural eyelid attachments is important for active implants that mobilise these attachments or replace them with a sling. Whitnall's tubercle (WT) is traditionally used to identify lateral canthal attachments; however, it is not always present.

Implantation and long-term assessment of the stability and biocompatibility of a novel 98 channel suprachoroidal visual prosthesis in sheep.

Severe visual impairment can result from retinal degenerative diseases such as retinitis pigmentosa, which lead to photoreceptor cell death. These pathologies result in extensive neural and glial remodelling, with survival of excitable retinal neurons that can be electrically stimulated to elicit visual percepts and restore a form of useful vision. The Phoenix Bionic Eye is a fully implantable visual prosthesis, designed to stimulate the retina from the suprachoroidal space.