Comparison of Perkins, Tono-Pen and Schiøtz tonometers in paediatric patients under general anaesthesia.

Clinical comparison of the ProTon and Tono-Pen tonometers with the Goldmann applanation tonometer.

A clinical evaluation of a new electron ProTon tonometer was performed comparing the values of intraocular pressure (IOP) measured using this instrument with those determined by a similar instrument, Tono-Pen XL, and by Goldmann applanation tonometry. The mean IOP measured in 106 eyes with the ProTon tonometer was not significantly different from that determined with Goldmann applanation, while...

Clinical classification and medical treatment options in childhood glaucoma.

IOP is the most variable diagnostic as it could be due to multiple factors (tonometer type, ocular movements, patient cooperation, anesthesia or corneal condition). Reference tonometry is Goldmann’s tonometer, although the Perkins tonometer (Haag-Streit AG, Bern, Switzerland) was utilized on multiple occasions as it enables IOP readings in supine position and with uncooperative patients. Other ...

Comparison of three methods of tonometry in normal subjects: Goldmann applanation tonometer, non-contact airpuff tonometer, and Tono-Pen XL

OBJECTIVE WE AIMED TO COMPARE INTRAOCULAR PRESSURE (IOP) MEASUREMENTS VIA THREE DIFFERENT TONOMETERS: the Goldmann applanation tonometer (GAT), the Tono-Pen(®) XL (TPXL), and a non-contact airpuff tonometer (NCT). METHODS This was a cross-sectional study of 200 eyes from 200 patients. Right eyes of all patients were included in this study. IOP was measured via GAT, NCT, and TPXL by three phys...

Intraocular Pressure Measurements by Three Different Tonometers in Children with Aphakic Glaucoma and a Thick Cornea

Background: To evaluate the agreement in intraocular pressure (IOP) measurements by Ocular Response Analyzer (ORA) and Tono-Pen XL (TXL) with the Goldmann Applanation Tonometer (GAT) and to examine corneal biomechanical properties in aphakic glaucoma patients with a central corneal thickness (CCT) >600 µ. Methods: Thirty-six eyes of aphakic glaucoma patients (group 1) and 40 eyes of normal chil...

Author's response to reviews Title: Repeatability of Intraocular Pressure Measurements with Icare Pro Rebound, Tono-Pen AVIA and Goldmann Tonometers in sitting and reclining positions Authors: