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Table 2 Comparison of intraocular pressure (IOP) measured by goldmann applanation tonometry (GAT) and a tono-pen AVIA tonometer (Reichert technologies Inc., Depew, NY, USA) in a sitting position

From: Instability of 24-hour intraocular pressure fluctuation in healthy young subjects: a prospective, cross-sectional study

 

Mean ± SD

Range

p-value

IOPGAT (mmHg)

12.81 ± 2.11

6 ~ 18

0.673*

IOPAVIA (mmHg)

12.92 ± 1.71

6 ~ 19

Correlation

   

  Pearson’s r

0.788

 

< 0.001

  Linear regression r

0.752

 

< 0.001

Difference† (mmHg)

0.15 ± 1.09

-2 ~ 2

 

  Linear regression r ‡

0.052

 

0.644

  1. SD Standard deviation.
  2. *Calculated by student's paired t-test.
  3. †IOPGAT minus IOPAVIA.
  4. ‡Calculated by Altman-Bland's method.
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BMC Ophthalmology

ISSN: 1471-2415

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