Tenders are invited for Hand Held Perkins Tonometer
For The Department Of Ophthalmology At All India Institute Of Medical Sciences, Jodhpur
In the practice I work in, I only use a Perkins tonometer
, but after a few attempts, it became easy.
Intra ocular pressure was recorded using Perkins tonometer
First, the Tono-Pen XL tonometer (Medtronic Solan, Jacksonville, FL, USA) was used, and the mean was calculated (MAGGS, 2008); then, the Perkins tonometer
(Clement Clarke, Harlow, UK) was used, and the mean was calculated and multiplied by 10 (ANDRADE et al.
The best method is to employ an Alcon pneumatic or Perkins tonometer
for measuring IOP in subjects either sitting or lying down4.
Tenders are invited for Purchase of perkins tonometer
for the department of ophthalmology.
For instance it misinterprets the guidelines on the use of the Perkins tonometer
Obviously many optometrists use a Perkins tonometer
, and we asked specifically that the Perkins tonometer
be included in the guidelines.
8) For the purposes of this discussion, the Perkins tonometer
will be considered equivalent to GAT.
Compared to GAT, Perkins tonometers
have lower magnification and dimmer illumination; both of these factors could considerably reduce the visibility of the inner edge of the mires, thus causing an underestimation of IOP measurements.
are essentially hand-held versions of the gold-standard Goldmann applanation devices, but require topical anaesthetic and fluorescein instillation, along with appropriate disposal or sterilisation of probes.
Lots of practices have Perkins tonometers
but not Goldmann and to exclude them would reduce the effectiveness of a refinement scheme.