Dynamic contour tonometry (DCT) over a thin daily disposable hydrogel contact lens
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Autor:innen
Autor:in (Körperschaft)
Publikationsdatum
2010
Typ der Arbeit
Studiengang
Sammlung
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
Contact Lens Anterior Eye
Themenheft
DOI
Link
Reihe / Serie
Jahrgang / Band
33
Ausgabe / Nummer
5
Seiten / Dauer
219-224
Patentnummer
Verlag / Herausgebende Institution
Elsevier
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
Dynamic Contour Tonometry (DCT) has been shown to measure the intraocular pressure (IOP) independent
of corneal physical properties such as thickness, curvature and rigidity. The aim of this study was
to find out if DCT remains accurate when it is applied on regularly shaped corneas while a thin, daily
hydrogel contact lens (CL) is worn.
Methods: This was a prospective, randomised study and included 46 patients (46 right eyes): 26 females
and 20 males. The age varied from 22 to 66 years (mean: 43.0±12.70 years). IOP and ocular pulse amplitude
(OPA) measurements were taken with and without a daily disposable hydrogel CL (−0.50 D), Filcon
IV) in situ (using the DCT), with a randomised order of measurements.
Results: The average value for the IOP measurements without CL was 16.51±3.20mmHg, and with CL
in situ it was 16.10±3.10mmHg. The mean difference was 0.41mmHg and not found to be statistically
significant (p = 0.074). The average value for the OPA measurement without CL was 2.20±0.79mmHg.
With CL in situ it was 2.08±0.81mmHg. This gave a mean difference of 0.11mmHg and was statistically
significant (p = 0.025). The Bland–Altman plot showed a maximum difference in IOP of +2.44 and
−2.00mmHg (CI 0.95). Regarding OPA, the maximum difference was +0.81 and −0.60mmHg (CI 0.95).
Conclusion: The presence of a thin hydrogel CL did not affect the accuracy of IOP measurements using the
DCT. The ocular pulse amplitude was measured on average 5.45% lower with a CL in situ.
Schlagwörter
Dynamic Contour Tonometry Cornea Intraocular pressure Ocular pulse amplitude Hydrogel Contact lens
Fachgebiet (DDC)
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
1476-5411
1367-0484
1367-0484
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Nein
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Lizenz
Zitation
NOSCH, Daniela, Didier HERRMANN, Armin P. DUDDEK und Oliver M. STUHRMANN, 2010. Dynamic contour tonometry (DCT) over a thin daily disposable hydrogel contact lens. Contact Lens Anterior Eye. 2010. Bd. 33, Nr. 5, S. 219–224. Verfügbar unter: http://hdl.handle.net/11654/10863