Tonometry

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Contents 1 More Specific Terms 2 Indications 3 Methods 4 Procedure 5 More General Terms 6 Additional Terms 7 References

More Specific Terms

• Goldman applanation tonometry (GAT Tapp, Ta)
• intraocular pressure (IOP) by applanation tonometry (Ta)
• intraocular pressure (IOP) by pneumatonometer (Tp)
• intraocular pressure (IOP) by Shiotz tonometry (Ts)
• intraocular pressure (IOP) by TonoPen (Tpen)

Indications

• evaluation of increased intraocular pressure

Methods

• Contact tonometry

• Schiotz tonometer

• hand-held device easy to use
• accuracy affected by:

• improper placement
• eyelid closure

• sterilization between patients required to prevent transmission of disease (i.e. HIV etc.)

• Goldmann's applanation tonometer

• most frequently used tonometer
• attached to slit lamp
• requires use of topical anesthetic

• Non-contact tonometry

• measures pressure using jet of air to depress globe
• pressure recorded by pneumotonometer
• good for screening large numbers of patients
• may require several measurements for accurate reading

Procedure

• measures the intraocular pressure of the eye by determining the amount of pressure needed to depress the cornea

More General Terms

• clinical procedure

Additional Terms

• intraocular pressure (IOP)

References

Saunders Manual of Medical Practice, Rakel (ed), WB Saunders, Philadelphia, 1996, pg 66-67

tonometry