The goal of this prospective controlled study is to measure the reliability of two intraocular pressure (IOP)-measuring instruments in comparison to the gold standard, Goldmann applanation tonometry (GAT) following vitreo-retinal surgery. The main question the current study aims to answer is: are Icare and Accupen as accurate as GAT in measuring IOP one day post eye surgery?
Participants in this study will have their IOP measured by the three different instruments one day post-surgery.
Age ≥ 18
Received a vitreoretinal surgery
Corneal dystrophy
Corneal surgery (penetrating keratoplasty, DSAEK/DMEK less than 6 months, radial keratotomy)
Irregular corneal surface
Active corneal ulcer
Single group
Intraocular pressure measure
Other interventionThe intraocular pressure of the subjects using either the Goldmann applanation tonometer, Icare or Accupen. The order of the measure is randomized.
Absence of difference between intracular pressure measured by devices
No difference in the intraocular pressure measured by Accupen or Icare compared to Goldmann tonometer.
Reliability and validity of devices at all intracular pressure level
The devices have the same intraocular pressure measured by Goldmann tonometer at High level of pressure (\>24mmHg), moderate level (10-24mmHg) and low level (\<10mmHg).
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