The accuracy of dynamic contour tonometry over soft contact lenses
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Autor:innen
Autor:in (Körperschaft)
Publikationsdatum
02/2013
Typ der Arbeit
Studiengang
Sammlung
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
Optometry & Vision Science
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
90
Ausgabe / Nummer
2
Seiten / Dauer
125-130
Patentnummer
Verlag / Herausgebende Institution
Lippincott Williams & Wilkins
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
Purpose. Dynamic contour tonometry (DCT) has been shown to measure the intraocular pressure (IOP) independently of
corneal thickness. This study aimed to investigate if DCT remains accurate when the IOP measurement is taken over soft
contact lenses (CLs) of different thicknesses and material characteristics.
Methods. This was a prospective clinical study that included 42 patients. Subject age was 22 to 59 years (26.5 T 6.3 years).
Intraocular pressure and ocular pulse amplitude (OPA) measurements were taken under topical anesthesia without CLs and
over various daily disposable CLs with j0.50, +5.00, and j5.00 diopters (D) in hydrogel (Nelfilcon A) and in silicone
hydrogel (Narafilcon A) materials.
Results. No statistically significant differences were found when comparing the IOP measurements obtained using either of
the different CL powers of j0.50 or j5.00 D, irrespective of which CL material was being used. However, the difference of
0.62mmHg observed when the Nelfilcon Awith a power of +5.00Dwas used turned out to be highly statistically significant
(p = 0.0002), whereas the Narafilcon Awith the same power of +5.00 D, with a small difference of j0.16 mm Hg, was not.
Regarding OPA measurements, no significant differences were found between measurements with and without CL neither
for different materials nor for change in dioptrical power (F = 0, p = 1.000).
Conclusions. This study showed good reliability of IOP and OPA measurements over CLs with varying thickness profiles
and different soft materials when using the DCT. Only a small but statistically significant difference of 0.62mmHg was found
for the IOP measurement with the hydrogel CL of +5.00 D compared with ‘‘no CL.’’
Schlagwörter
dynamic contour tonometer, cornea, intraocular pressure, ocular pulse amplitude, topical anesthesia, hydrogel, silicone hydrogel, contact lens
Fachgebiet (DDC)
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
1040-5488
1538-9235
1538-9235
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Ja
Zukunftsfelder FHNW
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Lizenz
Zitation
GOGNIAT, Fabrice, Daniela STEINEGGER, Daniela NOSCH, Roland E JOOS und Michael GOLDSCHMIDT, 2013. The accuracy of dynamic contour tonometry over soft contact lenses. Optometry & Vision Science. Februar 2013. Bd. 90, Nr. 2, S. 125–130. DOI 10.26041/fhnw-148. Verfügbar unter: https://doi.org/10.26041/fhnw-148