Welch Allyn LumiView Portable Binocular Microscope - User Manual - Manual (Page 11)

7
Spectacle Model
Optical Section Vertical Adjustment
• Loosen screw that attaches optical section spec
tacles.
• Reposition optical section to insure
proper alignment with user’s eyes.
• Tighten screw to maintain optical section 
location.
Adjusting for User Refractive Error
(Spectacle Models Only)
The optimal working distance from the object is 15" (38.1cm) - 17" (43.2cm). If this
model is used without corrective lenses and user is myopic or hyperopic, then the
user will need to work closer or farther from object, depending on refractive error.
To compensate for this, the spectacle models can be fitted with corrective lenses by an e
yecare practitioner of your choice. Please bring the following information to assist your ey
ecare practitioner in fitting your prescription lenses.
Lens Template – Spectacle Model
Front Sizes
Eye A B ED D.B.L
51 51 43 57.4 18