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Visual function, ocular surface integrity and symptomatology of a new extended depth-of-focus and a conventional multifocal contact lens.
- Source :
-
Contact lens & anterior eye : the journal of the British Contact Lens Association [Cont Lens Anterior Eye] 2021 Oct; Vol. 44 (5), pp. 101384. Date of Electronic Publication: 2020 Nov 23. - Publication Year :
- 2021
-
Abstract
- Purpose: To evaluate visual function, ocular surface integrity and dry eye symptoms with an extended depth-of-focus (EDOF) design and a conventional multifocal (MF) contact lens (CL) after 15 days of wear.<br />Methods: A crossover single mask randomised clinical trial was conducted including 30 presbyopes who used an EDOF and a conventional MF CL (Biofinity MF) for 15 days each. Defocus curves, depth-of-focus range, contrast sensitivity (CS) under photopic and mesopic conditions (with and without glare) and subjective perception of halos and glare were evaluated. The ocular surface was evaluated through non-invasive Keratograph tear breakup time (NIKBUT), averaged tear breakup time (NIKBUT-avg), tear meniscus height (TMH), bulbar and limbal redness, and conjunctival and corneal staining. Dry eye symptoms were assessed with the OSDI questionnaire.<br />Results: No statistically significant differences were found for defocus curves or depth-of-focus between the two CLs (both p > 0.05). Subjective perception of halos and glare was not significantly different between CLs. Statistically significant differences were observed for CS under mesopic conditions for low spatial frequencies (p = 0.008). None of the CL produced significant changes in NIKBUT, NIKBUT-avg, TMH or redness. No change in conjunctival staining was observed in 76.7 % and 73.3 % of participants for EDOF and Biofinity MF, respectively. No change in corneal staining was observed in 86.7 % and 83.3 % of participants for EDOF and Biofinity MF, respectively. No changes were observed in the symptomatology measured with OSDI questionnaire (p > 0.05).<br />Conclusions: Both CL for presbyopia offer good visual quality, preserve the ocular surface integrity and provide the patient with similar symptomatology levels after 15 days of lens wear.<br /> (Copyright © 2020 British Contact Lens Association. Published by Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1476-5411
- Volume :
- 44
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Contact lens & anterior eye : the journal of the British Contact Lens Association
- Publication Type :
- Academic Journal
- Accession number :
- 33243587
- Full Text :
- https://doi.org/10.1016/j.clae.2020.11.004