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DEPOSITS ON HYDROPHILIC ‘BANDAGE’ LENSES A scanning electronmicroscopic and x‐ray microanalytic study
Author(s) -
HØVDING GUNNAR,
SELAND JOHAN H.
Publication year - 1984
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1984.tb08435.x
Subject(s) - microanalysis , bandage , lens (geology) , materials science , chemistry , microscopy , mineralogy , optics , organic chemistry , physics
Scanning electronmicroscopy of 34 continuously worn Sauflon PW ‘bandage’ lenses showed an initial deposition of cellular debris, followed by an increasing, general, non‐penetrating, organic coating, particularly on the anterior lens surface. No microorganisms were found. X‐ray microanalysis of the 34 Sauflon PW lenses as well as 11 daily worn Hydro flex m lenses showed that elements may be added to or ‘washed out’ from the lenses during storage before preparation for microscopy. The elements obtained were constituents of both normal tear fluid and lens storage solutions. Only sulphur appeared firmly bound in the deposits, probably as sulphur‐containing macromolecules of ocular mucus. Calcium was only detected in a few cases.