Tonometry2012
Tonometry2012 Tonometry2012
Perkins hand held tonometer •Endpoint operation of the instrument is the same as the Goldmann •doubling prism is used to observe two split semi-circles and a thumbwheel is used to align the fluorescein mires for an IOP measurement. •An advantages of this type of Goldmann tonometer is that it can be used in any position. •Has been calibrated for sheep, cattle, dogs and cats •Relies on a clear regular cornea •Maximal scale reading = 5 ( maximal IOP ≤ 50mmHg)
Mackay Mackay-Marg Mackay Mackay-Marg Marg applanation tonometry •1mm central plunger surrounded by circular footplate •Electromechanical detection of plunger displacement •Mackay-Marg records this displacement on a paper chart •Operator reads IOP from the point of the “dip” on the chart – which represents the applanation point when the plunger no longer protrudes from the footplate and the force of IOP is taken off the plunger
- Page 1 and 2: Tonometry Gillian J. McLellan BVMS
- Page 3 and 4: Glaucoma ------------ 25 mm Hg Nor
- Page 5 and 6: Mercury Column Manometry Courtesy C
- Page 7 and 8: Clinical issues impacting tonometri
- Page 9 and 10: Restraint vs vs. vs vs. . no restra
- Page 11 and 12: How to evaluate tonometry papers Ac
- Page 13 and 14: How to evaluate tonometry papers…
- Page 15 and 16: Schiøtz - Practical Use Topical a
- Page 17 and 18: ↓ Force ↑ Force Schiøtz - Prac
- Page 19 and 20: Maklakov Tonometer, First produced
- Page 21 and 22: Imbert Imbert-Fick Imbert Imbert-Fi
- Page 23: Goldmann applanation tonometry •A
- Page 27 and 28: Tono Tono-pen Tono Tono-pen pen The
- Page 29 and 30: Clinical considerations for Mackay
- Page 31 and 32: Corneal Biomechanics • Applanatio
- Page 33 and 34: Rebound tonometer • Probe rebound
- Page 36 and 37: Non-contact device that flattens th
- Page 38 and 39: THE RELATIONSHIP BETWEEN CCT AND IO
- Page 40 and 41: The Proview eye pressure monitor Ha
- Page 42 and 43: The Pascal DCT (Swiss Microtechnolo
Mackay Mackay-Marg<br />
Mackay Mackay-Marg Marg applanation tonometry<br />
•1mm central plunger surrounded by<br />
circular footplate<br />
•Electromechanical detection of<br />
plunger displacement<br />
•Mackay-Marg records this<br />
displacement on a paper chart<br />
•Operator reads IOP from the point of<br />
the “dip” on the chart – which<br />
represents the applanation point when<br />
the plunger no longer protrudes from<br />
the footplate and the force of IOP is<br />
taken off the plunger
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