OPERATING INSTRUCTIONS
Small Pupil Binocular Indirect Ophthalmoscope:
1) Position as usual and adjust to fit with both right and left eye fields in coincide when
your target is 18 to 20 inches away.
2) While viewing the target, slide oculars with thumps outward, toward the temporal
positions until only approximately 20 to 25 percent of the right and left viewing fields
overlap. The smaller overlap you employ-the smaller the pupil you can work with.
3) Position light so that image is in upper 1/3 of the viewing field.
4) Better viewing is obtained if a +30 Diopter Aspheric viewing lens is used.
5) To change back to standard indirect use, merely adjust your oculars to your normal
pupillary distance and both fields of view with right and left eyes will align be in
coincide.
Completely eliminated filament image:
Filament image or uneven brightness within the illuminated area has been considered an
unavoidable nuisance in Binocular Indirect Ophthalmoscope. However in Indirect
Ophthalmoscope, filament image is eliminated completely by means of a special optical
design. Thus Indirect Ophthalmoscope is able to give doctors a fully and evenly illuminated
fundus image, free annoying filament image.
Halogen Lamp:
Light source is halogen lamp, which shows up figure in their natural colors. Life of the bulb
is longer than the incandescent bulb.
LED Lamp
x
Homogenous White light, adjustable light intensity, Long-lasting LED-illumination
free of UV and IR
x
Minimal or Less Heat radiation to halogen based light source
x
Instant on & Off
x
Environment friendly, ROHS complaint, no Mercury
Low cost of ownership
x
50000 burning hours of nominal LED-life expectance ensure many years of reliable
operation at minimal cost.
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