Welch Allyn 118 Series PanOptic Ophthalmoscope - User Manual - Manual (Page 15)

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14. To examine the left eye, repeat the
procedure outlined above.
However, unlike traditional
ophthalmoscopy, a unique feature
of PanOptic is that the examiner
does not have to switch to his/her
left eye. The practitioner can use
either eye to examine either
patient eye because of the greater
working distance between patient and practitioner. This permits
those who are strongly dominant in one eye to always use that
eye in the fundus exam.