Vision tests on spectacle lenses and contact lenses for optical myopia correction: a pilot study.
Contact lens
Optics and Refraction
Treatment other
Vision
Journal
BMJ open ophthalmology
ISSN: 2397-3269
Titre abrégé: BMJ Open Ophthalmol
Pays: England
ID NLM: 101714806
Informations de publication
Date de publication:
2022
2022
Historique:
received:
10
01
2022
accepted:
28
03
2022
entrez:
25
4
2022
pubmed:
26
4
2022
medline:
27
4
2022
Statut:
epublish
Résumé
Visual performance and short-term tolerability of different designs of myopia correcting options, including therapeutically relevant bifocal contact lenses (CL) and spectacle lenses with 'defocus incorporated multiple segments (DIMS)' technology were compared. In myopic volunteering subjects (n=8; spherical equivalent range: -1 to -7 D) visual acuity (VA) using Landolt C and contrast sensitivity (CS) using contrast C were assessed at three different gaze positions (-22° nasal, +22° temporal and 0° central), corresponding to a gaze through the DIMS area or the clear area of the DIMS lens design, respectively, after short-term wear of each of single vision spectacle lenses (SV), DIMS spectacle lenses (DIMS), monofocal soft CL and centre-near multifocal soft CL (MCL). Also, CS was assessed under photopic and mesopic light conditions with and without glare using sinusoidal gratings at 1.5, 3, 6, 12 and 18 cpd. Mean VA (Landolt C) was -0.12 to -0.10, -0.05 and 0.10 logMAR (SV, DIMS, CL, MCL) at central gaze (0°). At nasal gaze (-22°), VA differed by 0.12, 0.33, 0.05 and 0.01, and at temporal gaze (+22°) by 0.05, 0.26, 0 and -0.08 compared with central gaze values. Mean CS (Contrast C) was 1.74, 1.73, 1.69 and 1.61 logCS (SV, DIMS, CL, MCL) at central gaze at nasal gaze, CS differed by -0.02 to -0.13, -0.01 and -0.01, and at temporal gaze by -0.02 to -0.16, -0.01 and +0.06 compared with central gaze values. When compared with SV, MCL leads to a general decrease in VA and CS, while DIMS did not differ from SV at straight gaze (0° gaze). With DIMS, VA and CS are decreased to a similar level as with the MCL, but only at nasal and temporal gaze.
Identifiants
pubmed: 35464151
doi: 10.1136/bmjophth-2022-000971
pii: bmjophth-2022-000971
pmc: PMC8984052
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e000971Informations de copyright
© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.
Déclaration de conflit d'intérêts
Competing interests: HK is a consultant for Hoya Lens Germany performing presentations on the MiYOSMART lenses.
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