AIM To present a new, simple, inexpensive Schlemm canal microcatheter for circumferential canaloplasty in a rabbit model. METHODS A rabbit glaucoma animal model was established by intravitreal injection of triamcinolone acetonide. Circumferential canaloplasty with a new Schlemm canal microcatheter (patent license number: 201220029850.0) was performed. The Schlemm canal microcatheter was compo...

The blood supply to both the lateral wall of the maxillary sinus and the overlying membrane originates from the posterosuperior alveolar artery (PSAA) and the infraorbital artery. The purpose of the present study was to evaluate the anatomic characteristics of the PSAA in a large number of subjects of the Lebanese population. Images of 696 sinuses were analyzed using cone beam computed tomograp...

OBJECTIVE To assess the influence of various canal-drying techniques on the push-out bond strength between radicular dentine and both MTA Fillapex and iRoot SP sealers. MATERIALS AND METHODS Eighty extracted single-root teeth were instrumented with ProTaper Universal rotary instruments to a size F4. The teeth were randomly assigned to 1 of 4 groups as follows: group 1, excess fluid in the can...

INTRODUCTION Patients with fronto-orbital fibrous dysplasia (FD) occasionally present fronto-orbital protrusion, exophthalmos, and visual acuity disturbance. Simultaneous management of these conditions has not been previously described. CASE DESCRIPTION A-10-year-old female with fronto-orbital FD complained of left visual acuity disturbance. Head computed tomography showed compressed optic ca...

Histologic, experimental, and theoretical studies of the aqueous outflow pathways point toward the juxtacanalicular region and inner wall of Schlemm's canal as the likely site of aqueous outflow resistance in the normal eye. At least 50% of the aqueous outflow resistance in the normal eye and the bulk of the pathologically increased resistance in the glaucomatous eye resides in the trabecular m...

Objective: Describe the clinical course and management of a labyrinthine cyst associated with a labyrinthine fistula arising in a longstanding cavity after a canal wall down mastoidectomy. Study Design: Case report. Setting: University Hospital, tertiary referral center. Patients, Intervention, and Results: A 71-year-old woman who underwent left radical mastoidectomy at age 7 was referred to ou...

UNLABELLED The anterior ethmoidal artery (AEA) is an important point for frontal and ethmoid sinuses surgery. CT scans can identify landmarks to help the surgeon find the AEA. AIM To identify the landmarks of the AEA on the orbital medial wall and on the lateral wall of the olfactory fossa. and to correlate the presence of supraorbital ethmoidal cells with spotting the anterior ethmoidal arte...

The case is described of mucocele of the right frontoethmoidal sinus with bilateral maxillary sinusitis and a large polyp in the right nasal cavity. The mucocele had determined erosion of the anterior and posterior walls of the frontal sinus and superomedial wall of the orbit. The patient was operated upon by a surgical team comprising ENT and maxillofacial specialists. Right maxillary sinusoto...

Objective: To provide rationale for the clinical application of endoscopic optic nerve decompression based on anatomical and imaging studies. Methods: The anatomy of optic nerve canal and its adjacent structures of 20 facial sides of human cadaver heads were examined by multislice spiral CT scanning and imaging workstations. Anatomical and imaging measurements were compared. Results: The follow...