Orbital mycoses in an adult subtropical population.

Background/objectives: To report the spectrum of fungal infections involving the orbit encountered in an Australian subtropical population with respect to presentation, host risk factors, involved pathogens, treatment and outcomes.

Subjects/methods: A retrospective chart review was performed on all adult patients with orbital mycosis treated by the senior author (TJS) from 1986 to 2017 in a tertiary setting.

Results: Thirty cases of fungal infection involving the orbit were included in this case series.

Further Investigations on the Crosslinking of Tarsal Collagen as a Treatment for Eyelid Laxity: Optimizing the Procedure in Animal Tissue.

Purpose: A follow-up experimental study on the exposure of animal tarsal plate to ultraviolet-A radiation aimed at establishing an optimum range for safe irradiation conditions.

Methods: Sheep tarsus specimens were excised postmortem and then subjected to irradiation with ultraviolet-A rays (wavelength 365 nm) at higher irradiances than those reported in an initial study, using a laboratory radiation source. The mechanical properties (tensile strength and Young's modulus) of irradiated and nonirradiated samples were evaluated in a mechanical tester.

Photochemically Induced Crosslinking of Tarsal Collagen as a Treatment for Eyelid Laxity: Assessing Potentiality in Animal Tissue.

Purpose: An experimental study to demonstrate in animal eyelids that the controlled exposure of excised tarsal plate to ultraviolet-A radiation can induce a rigidification effect due to photochemical crosslinking of the constitutive collagen.

Methods: Excised strips of sheep tarsus were irradiated with ultraviolet-A rays (wavelength 365 nm) at low and high irradiances, in the presence of riboflavin as a photosensitizer, using radiation sources available for corneal collagen crosslinking procedure. The tensile strength and Young's modulus (stiffness) of irradiated and control samples were measured in a mechanical tester and analyzed statistically.

Optic atrophy due to Curvularia lunata mucocoele.

The authors report on the case of a 57-year-old male who presented with poor vision of his right eye. He had right optic nerve atrophy secondary to neural compression by a mucocoele in the pituitary fossa. The patient underwent transphenoidal resection of the mucocoele.