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Ophthalmologe. 2009 Dec;106(12):1111-5. doi: 10.1007/s00347-009-1919-z.

[Continuous intraocular pressure measurement: First results with a pressure-sensitive contact lens].

[Article in German]

Author information

1
Augenklinik, Universit├Ątsspital Z├╝rich. ahediger@vistaklinik.ch [corrected]

Erratum in

  • Ophthalmologe. 2010 Apr;107(4):376.

Abstract

BACKGROUND:

A prototype of a pressure-sensitive contact lens (CL-DCT) based on dynamic contour tonometry (DCT) has been developed for continuous intraocular pressure (IOP) monitoring. The purpose of the present study was to assess the clinical applicability of this CL-DCT.

MATERIAL AND METHODS:

In 24 healthy subjects continuous IOP recording with the CL-DCT for 100 s was accomplished including IOP monitoring during 2 consecutive Valsalva manoeuvres. The measurement procedure was repeated after 5 min on the same eye and compared with the initial measurement.

RESULTS:

Continuous pressure curves were recorded in 20 subjects. The CL-DCT revealed an individual increase in IOP from 0.74 to 8.26 mmHg during the Valsalva manoeuvres. Comparison of the 2 consecutive IOP measurements yielded a mean deviation of +/-0.4 mmHg.

CONCLUSIONS:

CL-DCT allows non-invasive and continuous measurements of IOP. The measured values are comparable to the expected ones. Further studies are necessary to compare the measurement accuracy of CL-DCT with that of slit lamp adapted DCT (SL-DCT).

PMID:
19756646
DOI:
10.1007/s00347-009-1919-z
[Indexed for MEDLINE]

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