Dynamic Contour Tonometry

Schneider, Evelin; Kanngiesser, Hartmut; Kniestedt, Christoph

doi:10.1007/3-540-34773-9_3

Cited by 17 publications

(1 citation statement)

References 53 publications

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“…It is based on the law of hydrostatic pressure by Pascal-that is, "pressure in liquids and gases is defined as constantly distributed forces acting perpendicular to all boundaries." 6 Applying this principle on the eye, a direct measurement of IOP requires an equilibrium between the interface forces between the tonometer tip and the corneal surface and the forces generated by the pressure inside the eye. The Pascal DCT is a slit-lamp mounted device that gives the examiner a view of the contact interface between the concave, contour-matched surface of the tonometer tip and the cornea.…”

Section: Resultsmentioning

confidence: 99%

Goldmann Applanation Tonometry Versus Dynamic Contour Tonometry After Vitrectomy

Mamas

Fuest²,

Koutsonas³

et al. 2016

Journal of Glaucoma

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IOP as determined by DCT underestimates IOP in gas-filled eyes compared with GAT, as GAT values were on average 3.1 mm Hg higher compared with those of DCT. The extent of IOP underestimation using DCT increases with higher IOP values. In the group of eyes after vitrectomy and in normal eyes we found a generally good agreement between the 2 methods, although high interindividual discrepancies were present. Our findings suggest that the 2 devices should not be used interchangeably in IOP evaluation after vitrectomy with gas endotamponade, which remains a difficult challenge.

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Section: Resultsmentioning

confidence: 99%