Current Style: Standard
PURPOSE: To compare 24-hour reduction in intraocular pressure (IOP) by latanoprost 0.005%, travoprost 0.004%, and bimatoprost 0.03% in patients with primary open-angle glaucoma (POAG) or ocular hypertension (OH).
DESIGN: Randomized, double-masked, crossover study.
PARTICIPANTS: Twenty-four patients with POAG and 20 with OH.
Abstract:
Purpose. To evaluate the intraocular pressure (IOP) with three different instruments, Goldmann applanation tonometer (GAT), noncontact tonometer, and Tono-Pen after photorefractive keratectomy (PRK) for myopia.
OBJECTIVE: To compare intraocular pressure (IOP) measured by two different instruments, air puff tonometer (NCT) versus Goldmann applanation tonometer (GAT), in gas-filled vitrectomized eyes.
DESIGN: Three-month, prospective, comparative trial.
Optometry & Vision Science. 83(2):102-107, February 2006.
GARCIA-RESUA, CARLOS OD; GONZALEZ-MEIJOME, JOSE M. OD; GILINO, JORGE OD; YEBRA-PIMENTEL, EVA OD, PhD
Optometry & Vision Science. 82(2):143-150, February 2005.
RESUA, CARLOS GARCIA OD; FERNANDEZ, MARIA J. GIRALDEZ OD; EXPOSITO, ALEJANDRO CERVINO OD; PEREZ, JAVIER GONZALEZ OD; YEBRA-PIMENTEL, EVA OD, PhD
The aim of the present study was to assess the level of accuracy for measurements of intra-ocular pressure (IOP) obtained with a new non-contact tonometer (NCT) the Reichert AT550.
AIM: To compare the inter-method agreement in intraocular pressure (IOP) measurements made with four different tonometric methods.
BACKGROUND: The reliability of non-contact tonometers has been reported extensively in the literature. This study was designed to assess reliability of the new Topcon CT80 non-contact tonometer in normotensive subjects, using the Goldmann tonometer as the standard.
Purpose: To assess the agreement between ICare((R)) rebound tonometer and Goldmann applanation tonometer in the hands of experienced and inexperienced tonometrists.
Patients and methods: Two tonometrists, experienced with both Goldmann applanation tonometry (GAT) and ICare(R) Tonometry (ICT) measured intraocular pressure (IOP), in a masked fashion, in 100 patients. In another series of 58 patients, ICT was performed by an inexperienced tonometrist and GAT by an experienced tonometrist.
PURPOSE: This study was conducted to compare the intraocular pressure (IOP) measurements by the Goldman applanation tonometer (GAT), non contact tonometer (NCT) and the ocular blood flow (OBF) pneumotonometer in different IOP ranges in glaucomatous eyes. The effect of central corneal thickness (CCT) on IOP measurement in chronic glaucomatous eyes using the three different tonometers was also evaluated.
PURPOSE: This study was conducted to compare the intraocular pressure (IOP) measurements by the Goldman applanation tonometer (GAT), non contact tonometer (NCT) and the ocular blood flow (OBF) pneumotonometer in different IOP ranges in glaucomatous eyes. The effect of central corneal thickness (CCT) on IOP measurement in chronic glaucomatous eyes using the three different tonometers was also evaluated.
BACKGROUND: The PASCAL Dynamic Contour Tonometer (DCT) is a new diagnostic approach for the digital measurement of intraocular pressure (IOP) in eyes with glaucoma. The aim of this study was to evaluate the reproducibility of DCT in normal eyes and to compare DCT with Goldmann applanation tonometry (GAT) and TonoPenXL.
PURPOSE: To compare the intraocular pressure (IOP) values obtained using a Goldmann tonometer (Haag-Streit) with those obtained with the new Tonopen XL (Mentor), which has certain differences compared with first- and second-generation models.
Here are my GDx-VCC test results:
GDx 
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These are the numbers from the above GDx report:
Glaucoma Today published an article titled "An Update on Tonometry". It's interesting reading, and I highly recommend it.
I normally use Xalatan first, wait 10 minutes and then use Timoptic XE.
Effects of Valsalva's manoeuvre on intraocular pressure
Make sure your GDx tests are performed under similar conditions in regard to any medications that affect your pupil size.
Paranhos A Jr, Silvestre AM, Passerotti CC, Martins EM, Mello PA, Prata JA Jr, Shields MB.
Increased intraocular pressure and visual field defects in high resistance wind instrument players
Joel S. Schuman MD, Emma Craig Massicotte MD, Shannon Connolly BA, Ellen Hertzmark MS, Bhaskar Mukherji MD and Mandi Z. Kunen MD
New England Eye Center, Tufts University School of Medicine, Boston, Massachusetts., USA
Received 23 March 1999; accepted 30 August 1999 Manuscript no. 99154. Available online 10 January 2000.
As I understand this study, the researchers had subjects with primary open angle glaucoma (POAG) breathe through their right nostril only (by closing off their left nostril). There is a common breathing technique in Yoga know as "alternate nostril breathing" or Nadi Shodhana in sanskrit. The aim of alternating the open nostrils is to create balance in the physiology. The idea behind the method used in this study is to correct a (perceived) imbalance by breathing through the right nostril only.
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