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1. Optical Specification OD 1D 2D 3D 4D 5D Diopter 6D 7D 8D 9D 10D 12D 15D 20D 25D 40D Large aperture small aperture Aperture Mo aperture Slit aperture Cobalt blue aperture Fixation aperture Filter Red free filter Polarizing filter Bulb 35V 21W Intermittent On time should not Operation mode exceed 2 mins with Off time not less than 5 mins Environment requirements Environment Temperature 10 C 35 C Operation Relative Humidity 30 75 Atmospheric Pressure 700 hPa 1060 hPa Shipping Common Conveyance Environment Temperature 40 C 55 C Storage Relative Humidity 10 90 Atmospheric Pressure 500 hPa 1060 hPa 41092 000 00 NO2. 3 5V Coaxial Ophthalmoscope User s Guide Thank you for purchasing the 3 5V_ coaxial ophthalmoscope To prevent damage to the 3 5V coaxial ophthalmoscope or injury to yourself or to others read the following safety precaution in their entirety before using this device Keep these safety instructions where all those who use the device will read them Attention Read user s guide for cautions and instructions for operating Warnings and Cautions gt amp Warning This product must not be used in the presence of flammable gases gt Warning This product should not be immersed in fluids gt Warning Use 3 5V Coaxial Ophthalmoscope only with all approved 3 5V power gt Warning Federal law restricts this device to sale or order of a physician 1 Part list N Qo a Oy ce a Fig 1 Polarizing filter red free filter switch Aperture selection dial Diopters selection disc Bulb Dowel pin of bulb Illuminated Diopters indicator Peep hole Rubber brow rest Operating Instructions a b c d e f g Connect the 3 5V Coaxial Ophthalmoscope to the power For examination of the right eye sit or stand at the patient s right side Select 0 on the illuminated lens disc of the ophthalmoscope and start with the small aperture Take the ophthalmoscope in the right hand and hold it vertically in front of
3. e ophthalmoscope which will automatically place the macula in full view Look for abnormalities in the macula area To examine the extreme periphery instruct the patient to Look up for examination of the superior retina Look down for examination of the inferior retina Look temporally for examination of the temporal retina Look nasally for examination of the nasal retina This routine will reveal almost any abnormality that occurs in the fundus i To examine the left eye repeat the procedure outlined above but hold the ophthalmoscope in red free filter facilitates viewing of the center of the macula 3 Maintenance 3 1 Replacing the illumination bulb Turn off the main power switch remove the 3 5V coaxial cphthalmoscop from the power grasp end of bulb and pull out Insert replacement bulb Push bulb in firmly The specification of bulb for the 3 5V Coaxial Ophthalmoscop is 3 5V 2 7W 3 2 Cleaning The cleaning of the 3 5V Coaxial Ophthalmoscope is easily accomplished by wiping the external surface with a cloth dampened with a mild detergent and water solution or a 70 isopropyl alcohol or a 10 bleach solution by volume Do not immerse NOTE Solution entering the assembly could damage internal components Use caution to ensure cloth is not saturated with solution Caution The 3 5V Coaxial Ophthalmoscope should never be placed in municipal waste 4 Technical Specifications
4. your own right eye with the light beam directed toward the patient and place your right index finger on the edge of the lens dial so that you will be able to change lenses easily if necessary Dim room lights Instruct the patient to look straight ahead at a distant object Position the ophthalmoscope about 6 inches 15 cm in front and slightly to the right 25 of the patient and direct the light beam intothe pupil A red reflex should appear as you look through the pupil Rest your left hand on the patient s forehead and hold the upper lid of the eye near the eyelashes with the thumb While the patient is fixating on the specified object keep the reflex in view and slowly move toward the patient The optic disc should come into view when you are about 1 to 2 inches 3 5 cm from the patient If it is not focused clearly rotate lenses with your index finger until the optic disc is as clearly visible as possible The hyperopic or far sighted eye requires more plus green numbers lenses for clear focus of the fundus the myopic or nearsighted eye requires minus red numbers lenses for clear focus h Now examine the disc for clarity of outline color elevation and condition of the vessels Follow each vessel as far to the periphery as you can To locate the macula focus on the disc then move the light approximately 2 disc diameters temporally You may also have the patient look at the light of th
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