Magnifying Loupe Adjustment

First Nerve transfer workshop,KTPH, Singapore

2017

Magnification power 3.5

Working distance is 420mm

Identify your dominant eye

• Point your finger a distant object – both eyes open• Close one eye• Open it• Close the other eye• Open it• If your finger moves, the eye you closed is dominant

Adjust head-strap

• Go in front of a mirror, if you are a first user• Use of head-strap distributes weight around head, this is important for

all-day wearing comfort• Loosen bead• Place frames on head, tighten bead comfortably• To remove, loosen bead, grasp temples, pull up and forward

Adjust nose pad

• Squeeze or spread nose pad so that pad sits flat on nose, if possible with your loupe• To lower frame, spread pad apart• To raise frame, squeeze pad together

Check for Working Distance

• Sit in your working position and focus on gauze to see clearly the threads• You can focus on your palm also• You can measure from your eye to the operating site• Distance should match working distance indicated

Check Inter pupillary Distance

• When the focus is properly adjusted, the two circles that form the field-of-view should merge together• If the field is not clear, there is double vision, eye strain or no field-of-

view, adjust inter pupillary distance, first to the dominant eye and then to the non-dominant eye

Warning

• Your field of vision is limited, do not injure your assistants

Thank you