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All Journal Indian Journal of Forensic Medicine & Toxicology
Prashant Bulchandani1 , Girish A. Gadre2
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Correlation of Perkins Hand-Held Applanation Tonometer with Non-Contact Tonometer Prashant Bulchandani1 , Girish A. Gadre2
Indian Journal of Forensic Medicine & Toxicology Vol. 14 No. 3 (2020): Indian Journal of Forensic Medicine & Toxicology
Publisher : Institute of Medico-legal Publications Pvt Ltd

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37506/ijfmt.v14i3.10424

Abstract

Aim: To correlate the IOP by the use of Perkins hand-held applanation tonometer (PAT) with Non-contact tonometer (NCT). Materials & Methods: Prospective cross-sectional study done on 148 eyes & 3 readings were taken for each method & mean calculated. Statistical analysis: Unpaired-T test & Correlation-co efficient, Sensitivity & Specificity were calculated for the NCT. Results: Mean age of subjects was 56.01± 9.73 yrs. Mean IOP with PAT & NCT 15.43 mmHg (95% CI 15.14–15.76) & 15.13 mmHg (95% CI 14.81– 15.46) respectively. NCT shows excellent agreement with PAT. Correlation coefficient(r) of IOP measured by NCT & PAT is 0.97 & 0.91 for RE & LE respectively with p value <0.05, showed strong positive correlation between the IOP measured by NCT & PAT. The NCT showed high sensitivity 86% & high specificity 97.9 % respectively, coming across an excellent agreement with PAT. Interpretation: NCT is easy to operate (non medical & Paramedical staff), minimum risk of infection & without any observer bias. Only drawback is the cost. Conclusion: The current study shows that the NCT compares well with the PAT. The NCT can be used as a reliable screening tool.
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