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Effects of scleral-lens oxygen transmissibility on corneal thickness: A pilot study
- Source :
- Contact lens & anterior eye : the journal of the British Contact Lens Association, vol 42, iss 4
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- PurposeTo investigate the effect of various oxygen transmissibilities (Dk/t) of scleral lenses and corneal thickness recovery time from overnight eye closure with patching on corneal edema during 5 h lens wear.MethodsScleral lenses (hofocon A, 15.6 mm diameter) were worn bilaterally with three different Dks (100, 140, and 160 Barrer). Central and peripheral corneal thickness (CCT and PCT) were measured using optical coherence tomography. Four subjects were randomly selected for one additional visit and asked to patch one eye before night sleeping. The patch was not removed until lens insertion to avoid corneal deswelling. Then CCT of both eyes was measured.ResultsTen neophytes with healthy eyes participated in the study. Mean [95% CI] Dk/t of the study lenses was 32.0 [29.2, 34.7] hBarrer/cm. Mean [95% CI] CCT immediately upon lens insertion and after 5 h of lens wear were 532.4 [520.3, 544.5] μm and 538.7 [526.5, 551.0] μm, respectively. Mean [95% CI] percentage change (%Δ) in CCT was 1.2% [0.9%, 1.5%], 1.2% [0.9%, 1.4%], and 0.8% [0.6%, 1.1%] for CCT, nasal PCT, and temporal PCT, respectively. There was an inverse relationship between temporal Dk/t and %ΔPCT (p
- Subjects :
- Male
medicine.medical_specialty
genetic structures
Contact Lenses
Scleral lens
Pilot Projects
Eye
Ophthalmology & Optometry
law.invention
Cornea
Young Adult
03 medical and health sciences
0302 clinical medicine
Double-Blind Method
Corneal edema
Clinical Research
Opthalmology and Optometry
law
Ophthalmology
medicine
Humans
Prospective Studies
Tomography
Eye Disease and Disorders of Vision
Cross-Over Studies
business.industry
Corneal Edema
Organ Size
General Medicine
Oxygen transmissibility
eye diseases
Oxygen
Lens (optics)
OCT
Optical Coherence
030221 ophthalmology & optometry
Female
sense organs
Eye closure
business
Tomography, Optical Coherence
Sclera
030217 neurology & neurosurgery
Optometry
Subjects
Details
- ISSN :
- 13670484
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Contact Lens and Anterior Eye
- Accession number :
- edsair.doi.dedup.....aaf59a8cca315c1c05fe651d247f2516