Intraocular pressure measurement
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Some of the available methods of measuring intraocular pressure are:
? Goldmann tonometry. Considered to be the ‘gold standard’. It is a slit-lamp mounted applanation tonometer and is a robust and reliable instrument
? Perkins tonometry. Uses the same Goldmann applanation probe in a portable hand-held instrument. An LED light source can provide greater brightness
? Non-contact tonometry. Air-puff tonometers are objective, do not require anesthetic or fluorescein and avoid the risks of corneal abrasion, drug reactions or infection
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