Eli Ezer EDL-20D User manual

Image 14D 20D 28D 40D 78D 90D
Image Magnification X 4.29 2.97 2.11 1.68 0.93 0.65
Field of View 39 ° 50 ° 55 ° 70 ° 78 ° 72 °
Working Distance mm 72 47 29 24.8 10 10
Focal Length mm 72.6 52.0 36.3 27.3 16.1 12.5
Clear Aperture mm 52 48 38 38 26 18
Lens Diameter mm 54 50 40 40 28 21
STRUCTURE
Indirect diagnostic lens consist of three parts:
lens, lens holder and fixed ring.
USE
1. As a kind of iatrical magnifier, indirect
diagnostic lens has a wide-angle. It can
be used with slit lamp microscope
retinoscope to diagnose the rear and
bottom of the eye’s vitreous body.
2. When used with slit lamp or
ophthalmoscope with the lens, retina,
second nerve, macula luteal and capillary
vessel can be observed expressly.
Without touching the patient’s eye, the
image has a wide angle of view, large
image and strong third dimension etc.
DIRECTIONS FOR USE
1. The silver ring on the lens holder should be
held toward the patient’s eye during
examination, which can ensure the right
using direction and may provide for best
image quality.
2. Keep the lens centering on the patient’s pupil.
3. Hold the lens far enough from the patient’s
eye so that the retinal image has the same
diameter with the lens.
4. Keep the illumination sources as dark as
possible to minimize reflections and image
contrast.
5. Keep the lens clean to minimize glare from
the lens surface.
CLEANING
Clean with alcohol or the mixture of aether
and alcohol.
1. Soak in glutaraldehyde (2% or 3.4%
aqueous solution) for a minimum exposure
time of 20 minutes (refer to the
manufacture’s label for solution temperature
recommendations.
2. Rinse lens thoroughly to remove
disinfection solution. Three cycles of one
minute, cool or tepid water is recommended.
3. Dry carefully and place in dry storage case.
DESINFECTION AND STERILIZATION
WARNING
Indirect diagnostic lenses must never be
steam autoclaved or boiled. Using gas is the
only way to disinfect. Before using other
common methods, you should contact our
service department.
PACKAGING & TRANSPORTATION
STORAGE
During the transportation, take care to
protect it from wetness, upside down and
violent vibration.
This equipment should be sorted in a well-
ventilated room without corrosive gas.
OTHER
The product is guaranteed for 3 years against
breakage, coating abrasion and defects in
material and workmanship.