The calibration scale for the Schi0tz tonometers toas tested by comparing Goldmann applanation and Schi0tz measurements on the eyes of 906 patients. The study differed from several previous studies in that both the applanation and Schi0tz measurements were made with the subjects lying on their backs, thus eliminating errors due to change in intraocular pressure as the subject changed from one p...

purpose: to compare the tono-pen and schiotz tonometers in measurement of intraocular pressure (iop) in patients with primary congenital glaucoma. methods: this study was conducted on 38 eyes of 20 patients with primary congenital glaucoma. all measurements were performed under general anesthesia. one minute after receiving halothane 3% iop was determined by tono-pen and then by schiotz tonomet...

PURPOSE Intraocular pressure (IOP) varies with body position and previous research has indicated that most, but not all, of the variation in IOP is due to changes in episcleral venous pressure (EVP). Positional changes in other aqueous humor dynamic parameters may contribute to the change in IOP. The purpose of this study was to investigate the variation of aqueous humor outflow facility with b...

OBJECTIVE We evaluated the correlation between intracranial (ICP) and intraocular pressure (IOP). METHODS Of the 77 patients who underwent a lumbar puncture, 27 were excluded secondary to a history of glaucoma, using drugs effective on IOP, and abnormal funduscopic examination. ICP was measured by lumbar puncture. IOP was measured by two scales of Schiotz tonometer in both eyes, and the mean ...

Etomidate, a new short-acting non-barbiturate hypnotic, was administered to 40 patients between the ages of 12 years and 65 years. Intra-ocular pressure was measured before and after etomidate injection using a Schiotz tonometer. A significant reduction of intra-ocular pressure was found to follow etomidate injection in spite of the often associated myoclonic movements. The mechanism of reducti...

The definition of glaucoma is an elevated intraocular pressure. Normal intraocular pressures in dogs are 12-24mmHg. The pressure is best measured by tonometry and the most common tonometers are the Tonopen, TonoVet, and Schiotz tonometers. The Tonopen and TonoVet are more easily utilized but the Schiotz can also be accurate when the user is adequately trained in its use. Glaucoma can be either ...

It is suggested that non-invasive techniques for measuring intracranial pressure should be suitable for use in the unsedated infant and should be capable of measuring pressure continuously. Methods described by other authors are reviewed. After investigation of 18 patients the technique relying upon the pulsation of the fontanelle described by Purin was rejected as being difficult to perform an...

Case 1, a girl aged 3 years (III, 5), was born at full term on November 8, 1953. At birth the corneae were noticed to be enlarged and cloudy, and she was transferred to the Royal Eye Hospital a few days later. On admission both corneae were enlarged and hazy. The anterior chamber was deep in each eye. Fundus details were not seen. The corneal diameter was 115 mm. in the right eye and 12 mm. in ...

In young individuals, the C-values of tonograms obtained during accommodation were shown to be significantly greater than those obtained on the same eye when accommodation was completely relaxed. In the same group, the Schiotz pressure reading was found to be lower following 4 minutes of accommodation. Thus, the increase in C-values could not be interpreted to reflect exclusively the change in ...