Direct focal illumination Slit lamp

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lesions seen in superficial layers of cornea direct focal illumination


observation optical section or direct focal illumination applied method. achieved directing full-height, hairline medium width, medium-bright beam obliquely eye , focusing on cornea quadrilateral block of light illuminates transparent medias of eye. viewing arm , illuminating arm kept parfocal. type of illumination useful depth localization.direct focal illumination used grading cells , flare in anterior chamber shortening height of beam 2–1 mm.








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