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3.
How to use
2 Adjusting ocular diopter value
3-1 How to hold the slit-lamp
1 Hold the slit-lamp's main body. securely grabbing its grip by your right (or left) hand.
2 Place the other hand's thumb on the side of upper-end of the slit-lamp's main body.
3 Stabilize slit width indication by adjusting the distance between the examined eye and the objective lens, depending
on how wide the opening is between the thumb and the fingers when put on the patient's forehead.
(If optional forehead rest is used, it is much easier to fix the main body.)
How to hold the slit-lamp
3-2 Adjusting each part
1 Adjusting eye-to-eye distance
Adjust the eye width to the examined eye by binding and stretching both prism boxes both ways while holding them
by hand, to have an adequately round field of vision as viewed through the ocular lens.
2 With the ocular lens turned to its full plus(+) range, look into the viewfinder with each eye while slowly turning it
clockwise. When the line of sight comes into clear sight, stop turning. It is recommended that a patent wearing eye-
glasses should use the viewfinder with its rubber eye piece collar folded forward.
1 Adjusting eye-to-eye distance