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Document ID (ISN)53380
CIS number 90-625
ISSN - Serial title 0029-0203 - Nippon Ganka Gakkai Zasshi - Acta Societatis Ophthalmologicae Japonicae
Year 1988
Convention or series no.
Author(s) Kondo M.
Title Experimental corneal damage caused by arc welding light exposure
Original title Yōsetsukō ni yoru kakumakushōgai no jikkenteki kenkyū [in Japanese]
Bibliographic information Mar. 1988, Vol.92, No.3, p.53-63. Illus. 23 ref.
Abstract To elucidate the effect of arc welding light on corneas covered by soft contact lenses, rabbit corneas covered by several kinds of contact lenses (CLs) were exposed to arc welding light and thermal changes of the corneal surface and the corneal tissues were studied histopathologically. Corneas covered by high-water-content soft contact lenses (SCLs) showed an immediate rise of superficial temperature after exposure, and the same pattern of temperature rise was observed in the case of corneas warmed by near-infrared rays. After exposure to arc welding light the cornea was stained with fluorescein, and vesicle formation and shedding of superficial epithelia were observed by light microscopy. Adjacent superficial epithelia of the cornea showed dissociation at adjoining borders, and microvilli on the cell surface fused into rough structures as shown by scanning electron microscopy. Multiple vesicle formation and enlargement of the vesicles in the cytoplasm of superficial and wing-like cells were also observed by transmission electron microscope. Thus, the near-infrared component of arc welding light affected the high-water-content SCLs thermally, causing dehydration which in turn led to more severe epithelial damage of the corneas in the case of other kinds of CLs.
Descriptors (primary) corneal damage; contact lenses; arc welding and cutting
Descriptors (secondary) infrared radiation; animal experiments
Document type D - Periodical articles
Subject(s) Metal production and metalworking
Broad subject area(s) Physical hazards
Browse category(ies) Diseases of the eye and vision damage
Welding and cutting