Clinical investigation of flat pack toric contact lenses and wearer attitudes to environmental impact

Ghorbani-Mojarrad, Neema, Rountree, Lindsay, Terry, Louise ORCID: https://orcid.org/0000-0002-6200-8230, Bruce, Heather, Hallam, Emily, Jolly, Louise, Retallic, Neil and Evans, Katharine 2023. Clinical investigation of flat pack toric contact lenses and wearer attitudes to environmental impact. Eye and Contact Lens: Science and Clinical Practice 49 (11) , pp. 475-482. 10.1097/ICL.0000000000001031

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Abstract

Objectives: To investigate the performance of a novel flat pack toric daily disposable contact lens compared with traditionally packaged toric lenses in a randomized, crossover study. Environmental attitudes to contact lens wear were also explored. Methods: Habitual contact lens wearers were recruited to wear a hioxifilcon A (Miru 1 day Flat Pack Toric, Menicon, Nagoya, Japan) test lens and a control lens: either nelfilcon A (Dailies AquaComfort Plus, Alcon, Geneva, Switzerland) or etafilcon A (1-Day Acuvue Moist, Johnson & Johnson, New Brunswick, NJ). Objective lens performance was assessed at fitting, and participants wore lenses in a randomized order for three consecutive days. Subjective measures of lens performance (comfort, vision, and handling) were then assessed by a questionnaire, with further questions on overall lens preference and environmental perceptions. Results: Objective measures of lens fit were similar for the test and control lenses, except for distance VA which was better with the control lenses (P<0.05; difference of two logMAR letters). End of day comfort was greater with the test lens, but this did not reach significance. Both lenses demonstrated similar scores for overall satisfaction. 87.5% of participants indicated the environmental impact of contact lenses to be important/extremely important to them, with 100% of participants identifying the flat pack packaging as having a smaller environmental impact. Conclusion: Overall, the lenses used in the study performed to similar levels. Environmental credentials are important to contact lens wearers, which may contribute to overall lens preference.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Schools > Optometry and Vision Sciences
Publisher:	Lippincott, Williams & Wilkins
ISSN:	1542-2321
Date of First Compliant Deposit:	3 November 2023
Date of Acceptance:	27 July 2023
Last Modified:	03 Nov 2023 15:17
URI:	https://orca.cardiff.ac.uk/id/eprint/163617

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