Tonometer Testing Station

Pressure measurement: which tonometer?

In the search for more accurate ways to determine intraocular pressure, the Halberg applanation tonometer may represent an alternative to the Schi0tz tonometer for routine screening pressure measurements. Although between 100 to 150 measurements are generally required to gain proficiency with the Halberg, the instrument is accurate in patients with normal corneas even with very abnormal scleral...

A recording tonometer.

THE measurement of the resistance to outflow of the aqueous humour by the procedure of tonography has recently aroused interest in the continuous recording of the intra-ocular pressure (IOP). There are, in addition, numerous other physiological and clinical investigations which could be performed if it were possible to obtain a continuous and accurate record of the IOP in human subjects. Such r...

Compputerized Station for Semi-automated Testing Image Intensifier Tubes

Testing of image intensifier tubes is still done using mostly manual methods due to a series of both technical and legal problems with test automation. Computerized stations for semi-automated testing of IITs are considered as novelty and are under continuous improvements. This paper presents a novel test station that enables semiautomated measurement of image intensifier tubes. Wide test capab...

A Computerized Station for Testing Night Vision Devices

Comparative study of measurement of IOP with Goldmann’s applanation tonometer and Non contact tonometer

Aim : The aim of this study is to validate the efficacy of NCT by comparing its measurements with that of Goldmann’s applanation tonometry and to know if it can be used as a screening tool for glaucoma. Materials and methods : In 400 eyes of 200 adults selected for cataract surgery, IOP was measured first with NCT and 15min later with GAT and the results were compared. Results : The range of IO...