Adaptive finite element eye model for the compensation of biometric influences on acoustic tonometry.

Background And Objective: Glaucoma is currently a major cause for irreversible blindness worldwide. A risk factor and the only therapeutic control parameter is the intraocular pressure (IOP). The IOP is determined with tonometers, whose measurements are inevitably influenced by the geometry of the eye.

Results of First In Vivo Trial of an Acoustic Self-Tonometer.

Purpose: Glaucoma is the world's most common cause of irreversible blindness, which makes early diagnosis, with the goal of preserving vision, essential. The current medical intervention is to reduce intraocular pressure (IOP) to slow down progression of the disease. The main goal of this study was to test a novel handheld acoustic self-tonometer on humans.

Methodical Approach for Determining the Length of Drill Channels in Osteosynthesis.

In order to fix a fracture in osteosynthesis, it is necessary to attach screws bicortically to the bone. The length of the screws must be selected correctly in 1-mm increments: otherwise, injury to the surrounding tissue structure or insufficient fixation will result. The drill channel length can only be determined preoperatively to a limited extent and with insufficient accuracy and is therefore determined intraoperatively with a mechanical caliper gauge.

Optical measurement of the corneal oscillation for the determination of the intraocular pressure.

Motivation Glaucoma is currently the most common irreversible cause of blindness worldwide. A significant risk factor is an individually increased intraocular pressure (IOP). A precise measurement method is needed to determine the IOP in order to support the diagnosis of the disease and to monitor the outcome of the IOP reduction as a medical intervention.

Pink bacteria-Production of the pink chromophore phycoerythrobilin with Escherichia coli.

Phycoerythrobilin (PEB) is an open-chain tetrapyrrole derived from heme and plays an important role as light-harvesting pigment in the phycobiliproteins of cyanobacteria and red algae. Furthermore, PEB can also function as an antioxidant with potential use as a natural acid stable food colorant. PEB is not commercially available and large, pure quantities can only be obtained by laborious methanolysis of red algae followed by liquid chromatography.

Acoustic tonometry: feasibility study of a new principle of intraocular pressure measurement.

Purpose: An accurate measurement of intraocular pressure (IOP) is still essential for detecting, following-up, and treating glaucoma. The objective of the interdisciplinary project GlauPhon was to prove a new noncontact tonometry principle that analyzes the acoustic oscillation of the eye.

Method: Three enucleated porcine eyes were infused via the optic nerve with a saline solution.