Purpose: Measurement of intraocular pressure (IOP) is one of the basic investigations in a general ophthalmic workup. In this study, we attempt to determine the agreement in the measurement of IOP obtained by Perkin's applanation tonometer, noncontact tonometer and Schiotz indentation tonometer in patients attending general ophthalmology OPD in a tertiary care centre in South India and its use in a community ophthalmology setting.

Methods: A cross-sectional analytical study in which IOP was measured in patients using the three tonometers. Central corneal thickness (CCT) was measured using Ultrasonic pachymetry. Bland Altman analysis was done to evaluate the agreement between instruments.

Results: 800 eyes of 400 patients were included in the study. By Bland Altman method, Schiotz indentation tonometer was found to have better correlation to IOP obtained by Perkin's applanation tonometer. Schiotz indentation tonometer was found to be most accurate when CCT was in the range of 501-550 μm and noncontact tonometer was found to be least accurate when CCT was greater than 600 microns. On comparing correlation at different age groups, both the methods had better correlation at <40 years age group.

Conclusion: Both the tonometers showed a significant correlation with the gold standard technique (Perkin's applanation tonometer) over a range of IOP and CCT with the Schiotz tonometer better than the NCT. This study proves that Schiotz tonometer can be recommended as a reliable screening tool in community outreach ophthalmology services. The twin advantages of portability and availability make the Schiotz tonometer a popular choice among ophthalmology trainees and optometrists in a developing country like India.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4907972PMC
http://dx.doi.org/10.1016/j.sjopt.2015.11.002DOI Listing

Publication Analysis

Top Keywords

schiotz indentation
12
indentation tonometer
12
community ophthalmology
8
iop perkin's
8
perkin's applanation
8
applanation tonometer
8
noncontact tonometer
8
tonometer schiotz
8
bland altman
8
better correlation
8

Similar Publications

Purpose: Our purpose was to assess the effect of LASEK surgery on ocular rigidity and to compare its effect on intraocular pressure (IOP) readings with Goldmann applanation tonometry (GAT), Schiøtz indentation tonometry (ST) and dynamic contour tonometry (DCT).

Methods: Prospective, observational, single-masked cohort study. One eye per patient from 31 consecutive subjects who underwent LASEK refractive surgery to correct myopia, as well as from 108 non-operated myopic patients, were included.

View Article and Find Full Text PDF

Purpose: Measurement of intraocular pressure (IOP) is one of the basic investigations in a general ophthalmic workup. In this study, we attempt to determine the agreement in the measurement of IOP obtained by Perkin's applanation tonometer, noncontact tonometer and Schiotz indentation tonometer in patients attending general ophthalmology OPD in a tertiary care centre in South India and its use in a community ophthalmology setting.

Methods: A cross-sectional analytical study in which IOP was measured in patients using the three tonometers.

View Article and Find Full Text PDF

Effect of Laser in Situ Keratomileusis on Schiøtz, Goldmann, and Dynamic Contour Tonometric Measurements.

J Glaucoma

April 2016

*Ramón y Cajal Universitary Hospital †Novovision ‡Rey Juan Carlos Universitary Hospital, Móstoles ¶Príncipe de Asturias Universitary Hospital **University of Alcalá, Madrid §Department of Optics, Pharmacology and Anatomy, University of Alicante ∥Foundation for the Visual Quality, Alicante, Spain #3rd University Department of Ophthalmology, Aristotle University, Thessaloniki, Greece.

Purpose: To assess the effect of laser in situ keratomileusis (LASIK) on ocular rigidity and compare its effect on intraocular pressure (IOP) readings with Goldmann applanation tonometry (GAT), Schiøtz indentation tonometry (ST), and dynamic contour tonometry (DCT).

Patients And Methods: Prospective, observational, single-masked study. Eighty-one patients who underwent myopic LASIK and 108 unoperated myopic control patients were included in the study.

View Article and Find Full Text PDF

[Rebound tonometry after vitreoretinal surgery].

Ophthalmologe

November 2015

Zentrum für Augenheilkunde, Universität zu Köln, Köln, Deutschland.

Purpose: The aim of this study was to analyze the practicability and comparability of the Icare rebound tonometer (RT) versus the Schiötz indentation tonometer (SIT) and the Goldmann applanation tonometer (GAT) for measuring intraocular pressure (IOP) in patients after pars plana vitrectomy (PPV).

Methods: A total of 100 eyes from 100 patients who underwent vitreoretinal surgery in the Department of Ophthalmology, University of Cologne were included in this prospective analysis. The IOP was measured using RT preoperatively, on the day of surgery and 2 days after surgery, using SIT on the day of surgery and GAT preoperatively and 2 days after surgery.

View Article and Find Full Text PDF

Purpose: To compare intraocular pressure (IOP) measurements with various tonometers after Descemet stripping with endothelial keratoplasty (DSEK) and to measure the change in IOP during the follow-up period.

Methods: A total of 28 eyes of 28 patients having undergone DSEK for bullous keratopathy by a single surgeon from June 2008 to November 2011 were enrolled in this study. IOP values, which were measured with Goldmann applanation tonometry (GAT), noncontact tonometry (NCT), Schiøtz indentation tonometry (SIT), and dynamic contour tonometry, and central corneal thickness values were reviewed and analyzed up to 3 years after DSEK (range, 1 months-3 years).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!