Purpose Of Use; Brief Description Of The Appliance - Haag-Streit Perkins Mk2 Manual De Instrucciones

en
1. Introduction

Purpose of Use

1.
2
Applanation Tonometers are used at room temperature in the examination,
diagnosis and documentation of the human eye.
Applanation tonometry may only be performed by healthcare professionals who are
qualified by their respective authorities to do so.

Brief Description of the Appliance

1.
3
The Applanation Tonometer functions according to the "Goldmann" method:The
measuring of the pressure required to maintain a uniform applanation of the surface
of the cornea.
Advantages
• High accuracy of the measurement - the average deviation in any one
single examination does not exceed ± 0.5 mm Hg.
• The intraocular pressure in mm Hg is found by multiplying the drum reading
by ten.
• Scleral-rigidity is not to be taken into account as the small volumetric
displacement of 0.56 mm 3 increases the intraocular tension by about
2.5% only.
• Massage effect DOES occur if repeated measurement occurs.
• There are no standardization and calibration difficulties.
Hospital and Optician use only
3
- continued