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Comfort and adaptation to silicone hydrogel lenses for daily wear

Dumbleton, Kathryn A., Woods, Craig A., Jones, Lyndon W. and Fonn, Desmond 2008, Comfort and adaptation to silicone hydrogel lenses for daily wear, Eye and contact lens, vol. 34, no. 4, pp. 215-223, doi: 10.1097/ICL.0b013e31816499dc.

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Title Comfort and adaptation to silicone hydrogel lenses for daily wear
Author(s) Dumbleton, Kathryn A.
Woods, Craig A.ORCID iD for Woods, Craig A.
Jones, Lyndon W.
Fonn, Desmond
Journal name Eye and contact lens
Volume number 34
Issue number 4
Start page 215
End page 223
Total pages 9
Publisher Lippincott Williams & Wilkins
Place of publication Philadelphia, Pa.
Publication date 2008-07
ISSN 1542-233X
Keyword(s) silicone hydrogel
contact lens
daily wear
hand-held computers
Summary Objectives. To investigate initial comfort and adaptation of currently successful low oxygen transmissibility soft lens wearers refitted with silicone hydrogel (SH) lenses for daily wear.

Methods. Fifty-five subjects were enrolled in a subject-masked 5-month clinical trial in which they wore 5 SH lenses in a randomized, crossover design. Comfort, burning, and dryness were rated on scales of 0 to 100 immediately on insertion and the time for lens settling was recorded. Symptoms were then rated at various times, using BlackBerry wireless communication devices (Research in Motion, Waterloo, Canada), during the day for 2 cycles of 2 weeks wear for each lens type.

Results. Comfort immediately on insertion varied between lens types (P=0.002). All lens types were reported by the subjects to have settled within 30 to 45 sec of insertion (P=0.14) and settled comfort was greater than comfort immediately on insertion (P<0.001). Comfort within the first hour of wear also varied between lens types (P=0.02). Comfort during the day decreased significantly for all lenses (P=0.001), but there was no difference between lenses (P=0.19) and no effect of lens age (P=0.15). The wearing times were greater with the SH lenses than the habitual lenses worn before study commencement (P=0.001). Overall performance of the lenses after 4 weeks was high, with no difference between lenses (P=0.45).

Conclusions. Initial comfort and adaptation to all SH lenses were good and no differences in the overall ratings were found between the 5 SH lenses investigated. Decreased comfort was noted later in the day with all lens types, but longer wearing times were reported with the SH lenses than previous hydroxyethyl methacrylate-based lenses.
Language eng
DOI 10.1097/ICL.0b013e31816499dc
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2008, Contact Lens Association of Ophthalmologists, Inc.
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Document type: Journal Article
Collection: School of Medicine
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