its optic properties greatest possible distance from the work which can be varied with additional lenses , variable magnification even into the region of the smallest biomicroscopes with a relatively large angle of vision , good mobility with regard to the object of vision with unchanged adjustment , simultaneous possibility of using semispectacles for presbyopia and easy swinging of the instrument out of and into the line of vision with one hand movement make this instrument very appropriate for the reasons for which it was developed and makes possible also - especially in the surgery of injured eyes , exact observation and assessment of the eye and performance of operations where no operating microscope is present with much greater magnification as that obtained with a customary loupe .
C0042789
vision
C0015392
eye