Non-contact assessment using Air Puff Tonometry
- 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?
- >60years old
- Family history of glaucoma
- Have diabetes
- Have hypothyroidism
- Other chronic eye conditions/ injuries
- Are nearsighted
- Used corticosteroid medications for prolonged periods of time
- Experiencing symptoms such as;
– gradual loss of peripheral vision
– Tunnel vision
– Severe eye pain
– Blurred vision
– Halos around lights
– Reddening of your eyes
- 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
Leave a reply →