The Perkins Tonometer can be used where other types of tonometer cannot. Post operative and bedridden patients in particular are difficult to examine by traditional methods or non-contact methods. The Perkins Tonometer is therefore a primary choice for many practitioners. The same prisms and test standards as the Goldmann Tonometer are used. Precision counter-balanced movements allow readings to be taken with the patient in any position without affecting the results. Every instrument is supplied with a signed and dated certificate of accuracy. 

The Perkins Examination Telescope (P.E.T) (SFS-450-T) is an accessory allowing magnified viewing of the fluorescein ‘semi-circles’ at arms length improving comfort for both patient and examiner. It also permits two people to view simultaneously and is an excellent teaching aid.