Accuracy and repeatability of the Tono-Vera rebound tonometer

  • Research type

    Research Study

  • Full title

    Accuracy and repeatability of the Tono-Vera rebound tonometer



  • Contact name

    Andrew Tatham

  • Contact email

  • Sponsor organisation

    The Queen’s Medical Research Institute

  • Duration of Study in the UK

    0 years, 4 months, 29 days

  • Research summary

    This study is a prospective randomised cohort study. Tono-Vera is an already approved and commercially tonometer, device to measure the pressure inside of the eye. The aim of the study is to assess the accuracy and repeatability of Tono-Vera tonometer. The investigators have no financial interest in this product. Patients will not be financially reimbursed for their participation in this study.
    An information sheet and cover letter will be sent to patients scheduled to attend the glaucoma clinic at least one week before the appointment. At conclusion of the normal glaucoma assessment, patients will be asked if they have received and read the information leaflet and whether they wish to participate in the study by the doctor or optometrist seeing them in clinic. Patients will be informed that participation is completely optional and a decision not to participate will not affect their ongoing treatment. Participation will extend their visit between 15 and 20 minutes and GP (General practitioners) will be informed if participation. Patients who agree to participate will be asked to sign the informed consent form by the glaucoma consultant or the glaucoma fellow. Then, they will be transferred to an adjacent research room and IOP will be measured with 3 devices (ORA, iCare Pro and Tono-Vera). The order of the tests will be randomized for each patient using a random number generator. All participants will exit the study on the same day of the enrolment.

  • REC name

    East of Scotland Research Ethics Service REC 2

  • REC reference


  • Date of REC Opinion

    8 Mar 2024

  • REC opinion

    Further Information Favourable Opinion