Dacryoliths in a series of dacryocystorhinostomies: histologic and chemical analysis.

Purpose: To present the clinical and intraoperative characteristics of dacryolith cases, to present their histologic and chemical analysis, and to relate the findings with the probable causes of their formation in a series of dacryocystorhinostomies performed in northern Greece.

Methods: In a series of 242 dacryocystorhinostomies in patients with chronic dacryocystitis, dacryoliths large enough to perform an accurate chemical analysis and a light histologic examination were found in five cases. The chemical analysis was based on atomic absorption spectrophotometry and atomic emission spectrometry.

Dacryoliths in chronic dacryocystitis and their composition (spectrophotometric analysis).

Purpose: To present the findings from histological and chemical analysis of large dacryoliths and correlate them with previous reports.

Materials And Methods: Dacryoliths were found in 8% of 216 dacryocystorhinostomy operations. In two cases with mild chronic dacryocystitis, large dacryoliths were extracted.

Alcuronium and intraocular pressure.

The effects of alcuronium on intraocular pressure (IOP) was studied in 20 patients undergoing elective ophthalmic surgery. IOP was measured with the Schiötz indentation tonometer before induction, after induction, and after tracheal intubation. Combined administration of a standardized sleep dose of thiopental (5 mg/kg) and alcuronium (0.