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  • Tonometry

    Non-contact assessment using Air Puff Tonometry

    Purpose:

    • To measures the pressure inside the eye, called intraocular pressure (IOP), and determine whether one is at the risk of glaucoma.

    Glaucoma is a serious eye disease in which there is increased fluid pressure within the eye. This increased pressure can damage the optic nerve, causing a loss of vision.

    Who should go for Tonometry?

    1.  >60years old
    2. Family history of glaucoma
    3. Have diabetes
    4. Have hypothyroidism
    5. Other chronic eye conditions/ injuries
    6. Are nearsighted
    7. Used corticosteroid medications for prolonged periods of time
    8. Experiencing symptoms such as;
      – gradual loss of peripheral vision
      – Tunnel vision
      – Severe eye pain
      – Blurred vision
      – Halos around lights
      – Reddening of your eyes

    During procedure

    • Rest your chin on a device similar to a slit lamp.
    • Stare straight into the examining device. When you are at the appropriate distance from the device, a tiny beam of light reflects off of your cornea onto a detector.
    • A puff of air is then directed at the eye, which will slightly flatten the cornea; how much it flattens depends on the eye pressure.
    • This causes the tiny beam of light to move to a different spot on the detector.  The instrument calculates eye pressure by looking at how far the beam of light moved.

    Normal range of pressure range: 12 -22 mmHg

     

     

     

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