The application of a computerised videokeratography (CVK) based contact lens fitting software programme on irregularly shaped corneal surfaces
Vorschaubild nicht verfügbar
Autor:innen
Autor:in (Körperschaft)
Publikationsdatum
09/2007
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 der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
30
Ausgabe / Nummer
4
Seiten / Dauer
239-248
Patentnummer
Verlag / Herausgebende Institution
Elsevier
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
Purpose: To explore the success of the application of a computerised videokeratography (CVK) software system for the fitting of rigid gas
permeable (RGP) contact lenses (CLs) on irregular corneal surfaces and compare it to the standard diagnostic fitting procedure.
Methods: This was a comparative prospective study, over a 1-year period (2004–2005). It included 41 RGP CL wearers (68 eyes) with
irregular corneal surfaces. Of these, 51 (75%) had keratoconus, 7 (10%) corneal scarring (infectious or traumatic), 6 (6.82%) corneal
transplants, 2 (2.9%) astigmatism, and 2 (2.9%) aphakia. Each eye was being re-fitted with a new RGP CL based on a topographical
measurement in conjunction with a CL fitting software programme. The performance of the CLs was evaluated regarding visual outcome,
fitting characteristics, and efficiency of the fitting procedure.
Results: Of the 68 eyes, 53 (77.94%) chose the CL fitted using the CVK software system, 9 (13.24%) chose the CL fitted using the standard
procedure, and 6 (8.82%) showed no preference for either CL.
There was a statistically significant improvement regarding visual outcome [contrast sensitivity at the spatial frequencies of 0.66
( p = 0.029), 3.40 ( p = 0.008), and 17 ( p = 0.032), subjective vision ( p = 0.009)], fitting characteristics [grading scale ( p = 0.00), lens
comfort ( p = 0.00) and daily wearing time ( p = 0.002)], and efficiency [number of trial lenses required ( p = 0.00)] with the CL fitted using the
CVK software system. Correlating factors for the likely preference for the CL fitted using the CVK software system were subjective vision
( p = 0.004), lens comfort ( p = 0.009), and convenience of the fitting procedure ( p = 0.023).
Conclusion: The application of a CVK software system for the fitting procedure of RGP CLs on irregular corneal surfaces was a safe
procedure and shown to be more successful and efficient than the standard diagnostic fitting method.
Schlagwörter
Videokeratography, Corneal topography, Contact lens(es), Irregular cornea, Rigid gas permeable, Fitting procedure, Keratoconus
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, Ioannis MAVRIKAKIS, Judith MORRIS und Gek L. ONG, 2007. The application of a computerised videokeratography (CVK) based contact lens fitting software programme on irregularly shaped corneal surfaces. Contact Lens Anterior Eye. September 2007. Bd. 30, Nr. 4, S. 239–248. Verfügbar unter: http://hdl.handle.net/11654/10866