Affiliation:
1. B
2. Bharati Vidyapeeth Deemed University Medical College and Hospital, Sangli, Maharashtra, India
Abstract
The aim of this research was to see how GAT and NCT are compared in different IOP ranges and its correlation with CCT. Topcon CT 800 was used for NCT, and the GAT model was a Slit lamp mounted Optilasa, S.L(Avenida de Manoteras, 22 Madrid, Spain). Topcon SP-1P Specular microscope was used to measure the CCT. A total of 50 patients (100 eyes) were included in the study. Out of 50 patients, 48% were females and 52% were males. NCT and GAT readings were analyzed in three IOP groups of less than 12 mmHg (n=16), 13-24 mmHg (n=73) and more than 25 mmHg (n=11). Most of the NCT and GAT readings were found to be in 13-24 mmHg group. Both NCT and GAT are significantly correlated with CCT (p<0.001) however, NCT has a stronger correlation as r =0.704 vs GAT r=0.584. IOP measurement of NCT was consistently higher than GAT and corneal thickness affects NCT more than GAT and by applying appropriate correction factor for CCT, NCT can be considered as a good screening tool for evaluation of glaucoma.
Publisher
IP Innovative Publication Pvt Ltd
Reference10 articles.
1. Allingham RR, Damji K, Freedman S, Moroi SE, Rhee DJ, Shields MB, Intraocular pressure and Tonometry.Shields Textbook of Glaucoma. 6th Edn..24-40
2. Varying Effects of Corneal Thickness on Intraocular Pressure Measurements with Different Tonometers
3. Bhan A, Browning AC, Shah S, Hamilton R, Dave D, Dua HS, Effect of corneal thickness on intraocular pressure measurements with the pneumotonometer, Goldmann Applanation tonometer and tonopen.Invest Ophthalmol Vis Sci 2002;43(5):1389-92
4. Inter-instrument agreement and influence of central corneal thickness on measurements with Goldmann, pneumotonometer and noncontact tonometer in glaucomatous eyes
5. Comparison of a new non-contact tonometer with Goldmann applanation