Abstract
Purpose
To present the process that led to the creation of the French Canadian translated
version of the Contact Lens Dry Eye Questionnaire-8 (which allows for an assessment
of symptoms while wearing soft contact lenses) as well as the validation data of the
f-CLDEQ-8.
Methods
The CLDEQ-8 went through the process of reverse translation, which was then reviewed
and improved by an experts’ committee to create a first version of the French questionnaire.
Cognitive interviews were conducted to pretest the tool and ensure content validity.
After a review of the pretest, the f-CLDEQ-8 was created. A web-based version of this
questionnaire was sent to contact lens wearers (CLW) recruited out of a clinical setting
for completion at two different endpoints interspaced by 7 days. Internal consistency
and test-reliability were calculated using Cronbach’s alpha and Intra-class Correlation
coefficient (ICC), respectively. Convergent validity between the f-CLDEQ-8 score and
overall opinion of the contact lenses was evaluated with a correlation.
Results
9 CLW with different socio-economic statuses and education levels went through a cognitive
interview with the back-translated version of the f-CLDEQ-8 to improve the questionnaire
wording and enhance its comprehension. 63 CLW (34.2 ± 10.1 years old and 2/3 of them
women) completed the f-CLDEQ-8 twice. An average Cronbach alpha of 0.928 was found
and an ICC of 0.944 (CI at 95 % 0.905;0.966). A moderately strong correlation of −0.714
(CI at 95 % −0.817;-0.566) was found between the overall opinion of the contact lenses
and the total score to the f-CLDEQ-8.
Conclusion
The French language version (f-CLDEQ-8) generated from the original CLDEQ −8 was shown
to be easy to use, reliable and culturally adapted to French spoken in Canada.
Keywords
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Article info
Publication history
Published online: December 06, 2022
Accepted:
October 25,
2022
Received in revised form:
October 23,
2022
Received:
July 5,
2022
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2022 British Contact Lens Association. Published by Elsevier Ltd. All rights reserved.
