Diurnal Variations ID'd in Anterior Sclera, Conjunctiva Thickness

This article originally appeared here.
Share this content:
Diurnal Variations ID'd in Anterior Sclera, Conjunctiva Thickness
Diurnal Variations ID'd in Anterior Sclera, Conjunctiva Thickness

WEDNESDAY, March 16, 2016 (HealthDay News) -- Diurnal variations occur in the thickness of the anterior sclera and conjunctiva among healthy young adults, according to a study published online March 1 in Ophthalmic & Physiological Optics.

Scott A. Read, Ph.D., from the Queensland University of Technology in Brisbane, Australia, and colleagues collected measures of anterior scleral and conjunctival thickness for 19 healthy young adults with minimal refractive error using anterior segment optical coherence tomography at seven measurement sessions over a 24-hour period. For each subject at each measurement session the thickness of the temporal anterior sclera and conjunctiva were determined at six locations at varying distances from the scleral spur.

The researchers observed significant diurnal variations in thickness in both the anterior sclera and conjunctiva over a 24-hour period (both P < 0.01). A similar pattern of diurnal change was exhibited by the sclera and conjunctiva; close to midday there was small magnitude thinning, while in the early morning immediately after waking there was a larger magnitude thickening. The amplitude of diurnal thickness change was larger in the conjunctiva than the sclera (mean amplitude 69 ± 29 versus 21 ± 8 µm). At the scleral spur, the conjunctiva exhibited its smallest magnitude of change, while the sclera exhibited its largest magnitude of change.

"Studies requiring precise measures of these anatomical layers should therefore take time of day into consideration," the authors write.

Abstract
Full Text (subscription or payment may be required)

Share this content:

is free, fast, and customized just for you!




Already a member?

Sign In Now »

Trending Activities

All Professions

Drug Lookup

Browse drugs by: BrandGenericDisease

More in Home

FDA Permits Marketing of Brain Stimulation Device for OCD

FDA Permits Marketing of Brain Stimulation Device for ...

FDA previously approved transcranial magnetic stimulation for major depression, certain migraines

Comments Open on End of NIH Review for Gene Therapy Studies

Comments Open on End of NIH Review for ...

NIH oversight panel no longer plans to review all applications for gene therapy experiments

U.S. Measles Outbreak Hits 107 Cases in 21 States, D.C.

U.S. Measles Outbreak Hits 107 Cases in 21 ...

Outbreak on track to exceed last year's; most of the people who got measles weren't vaccinated

is free, fast, and customized just for you!




Already a member?

Sign In Now »