ViewLight VIO-20 User manual

BINOCULAR INDIRECT OPHTHALMOSCOPE
PRODUCT DESCRIPTION
INTRODUCTION
Please read the following information carefully before installing and using the VIO-20
Halogen & VIO-30 LED Binocular Indirect Ophthalmoscope. VIEWLIGHT is responsible for
the safety, reliability and performance of the equipment only if it is used in accordance with
these instructions.
This device is designed for use by a certified practitioner. Environmental storage and
packing conditions of 60-95% relative humidity and 10-40 deg C are recommended. No parts or
accessories are supplied in sterile condition.
Apart from those by identified in the instructions within the manual, there are no user-
serviceable parts in this device. VIEWLIGHT will retain the direction to advise whether any
repairs may be carried out by external qualified technical personnel, or whether part(s) of
the device must be returned to the manufacturer’s premises for service or repairs to be
carried out under warranty or otherwise. Where appropriately qualified technical person are
identified. VIEWLIGHT
will make available on request information which may assist in
maintaining or repairing this device.
DEVICE DESCRIPTION
VIO-20 Halogen & VIO-30 LED is a head mounted Binocular Indirect ophthalmoscope
designed to be Used by trained personnel for illuminating and viewing parts of the eye such
as the Cornea and retina when used in conjunction with an ophthalmic aspheric viewing
lens.
Binocular Indirect Ophthalmoscope provides an illumination system to direct appropriately,
focused light into the eye in order to obtain an intermediate image of the fundus (retina) that
is viewed by the observer to diagnose the eye.
02

TABLE OF CONTENTS
#CHAPTER PAGE NO
1. Product Description 2
2. Quality, Reliability And Safety 4
3. Warnings 5
4. Important Safety & Maintenance Instructions 6
5. Safety Precautions 7
6. Caution for use, General Specification, Safety Rules 8
7. Environmental condition for use 9
8. Storage, Usage Period And Others 9
9. Technical Specification 10
10. Cleaning and Disinfection Information 11
11. Unpacking & Installation –VIO-20 12
12. Unpacking & Installation –VIO-30 13
13. A Dual Purpose Instrument With Outstanding Features 14
14. Small Pupil Feature 15
15. List of Parts –VIO-20 16
16. List of Parts –VIO-30 17
17. List of Parts –VIO-20 Power Supply 18
18. Operating Instructions 19
19. Fuse Replacement 20
20. Schematic Diagram 21
21. Trouble Shooting 22
03

QUALITY, RELIABILITY AND SAFETY
VIEWLIGHT is responsible for the safety, reliability and performance of the equipment only
if it is used in accordance with the instructions given in the Manual. The Instrument is
designed to perform as per the declared Intended for use with safer and reliable.
¾Electrical installation of the room or building in which the equipment is to be used
must comply with regulations specified by the country in which the equipment to be
used as well the specified in the specification.
¾The repair / service will be taken care by a qualified technical person of VIEWLIGHT
¾Read and follow the instructions, caution and warnings before installing the
Instrument.
04

WARNING
Warnings are intended to alert you to importance of following the correct operating
procedures where risk of injury to the patient or system user exits.
This is Class I equipment equipments for CE-Regulation 93/42/EEC, Class II for FDA
Classification to avoid risk of electric shock. This equipment must only be connected
to supply mains with protective earth.
No modification of this equipment is allowed.
Use only the type of power source that indicated on label.
Connect the Equipment to properly grounded power outlets.
Unplug the Equipment before servicing / cleaning it.
Confirm the AC power cord meets the relevant local safety standards.
Don’t use damaged power cord.
Only trained personal can handle the equipment.
Remove the plug of Equipment from wall outlet before changing the Fuse.
Check the electrical connections periodically; any defects noticed, like loose
connections, damaged to insulation in the electrical wires etc., should be rectified
immediately.
“Because prolonged intense light exposure can damage retina, the use of the device for ocular
examination should not be unnecessarily prolonged, and the brightness setting should not exceed
what is needed to provide clear visualization of the target structures. This device should be used
with filters that eliminate UV radiation (<400 nm) and, whenever possible filters that eliminate short-
wavelength blue light (<420 nm). The retinal exposure dose for a photochemical hazard is a product
of the radiance and the exposure time. If the value of the radiance were reduced in half, twice the
time would be needed to reach the maximum exposure limit.
INTENSITY WARNING (PHOTO TOXICITY INFORMATION)
While no acute optical radiation hazards have been identified for slit lamps, it is recommended that
the intensity of light directed into the patient’s eye be limited to the minimum level which is
necessary for diagnosis. Infants, aphakes and persons with diseased eyes will be at greater risk.
The risk may also be increased if the person being examined has had any exposure with the same
instrument or any other ophthalmic instrument using a visible light source during the previous 24
hours. This will apply particularly if the eye has been exposed to retinal photography.”
If the customer needs any calibration please send the equipment for calibration purpose.
Calibration process
TRAINING REQUIREMENT
The equipment is expected to operate by ophthalmic Doctors only. If at all it is used by Viewlight
technician they should by trained well in usage of this equipment.
well trained the personal if required.
05

IMPORTANT SAFETY & MAINTENANCE INSTRUCTIONS
Maintenance by user
Before using the Equipment, read instructions carefully.
Regular maintain and check the instrument and its parts.
Handle the Equipment carefully.
Touch the Bulb glass with clean cloth.
Use proper methods to clean optics and Equipment.
Before switch off, turnoff regulator.
Cover the Equipment when not in use.
Don’t touch the Bulb immediately after switch off.
Don’t touch the Mirror surface or exposed lenses, and keep them clean.
Don’t spill liquid into the Equipment.
Don’t use any hazardous solvents to clean the optics and parts.
Only use soft, dry cloth to clean the device.
When using the instrument after a prolonged period of inactivity, confirm normal and
safe operation beforehand
If the proposed device has no patient direct / indirect contact hens the
biocompatibility validation is not required.
Unplug the Equipment and refer servicing to qualified service personnel under the
following condition
xIf the product isn’t able to use after done all the troubleshooting in this
manual.
xIf the liquid has been spilled into the optics / Equipment.
xIf the product has been exposed to rain or water.
06

Safety pointers for the manual and the device described therein are depicted according to
the following categories. Carefully read these sign codes & follow them when necessary.
SAFETY PRECAUTIONS
The following code categories describe the degree of danger or damage likely to be
incurred in the event of user error made in ignorance of these codes.
WARNING
In the event of user error, death or serious injury is Possible
This icon denote cautions
This icon represents the productive earth
This icon represents Alternating current
This icon represents the power switch is turned OFF
This icon represents the power switch is turned ON
Equipmential Connection
Type B applied part
LABELING INFORMATION
SN
Number following this symbol indicate the serial number of the
Equipment
REF Character following the symbol indicate the Model
number of the
Equipment
Classification
CE-Regulation MDD 93/42/EEC -Class I
FDA classification Class II
Disposal
Dispose of the instrument according to local disposal and recycling laws.
07

CAUTION FOR USE
Cautions are intended to alert you to importance of following the correct operating
procedures where risk of injury to the patient or system.
Do not handle the plug with wet fingers ( To avoid electric shock)
The operators are here by instructed not to touch the equipment and the patient
simultaneously.
GENERAL SPECIFICATION
Equipment classification
Mode of operation : 5 minutes (Max)
Degree of mobility : Portable
Type of protection against
Electrical shocks -Class 1
Degree of protection against
Electrical shocks -Type ‘B’
Power Requirements
AC Input I/P: 100-230V AC, 50-60Hz,
O/P: 5V DC, 1A
Fuses 1A Slow Blow (110V AC)
500mA Slow Blow (230V AC)
3A Slow Blow
Safety Rules:
The series family ultrasound machines are designed to comply with the following
safety aspects.
xLeakage current to ground less than 0.5mA in normal condition.
xLeakage current to ground less than 1.0mA in single fault condition.
xIsolation voltage between ground and mains wires greater than 1500V.
xEmission and susceptibility requirements for class A. equipment as per IEC 60601-1-
2 standards.
08

Operating Temperature: 0°C ~ 50°C
ENVIRONMENTAL CONDITIONS FOR USE
Humidity : 35% ~ 95% (without dew condensation)
Air Pressure : 700kPa ~ 1060kPa
1. Environmental conditions for installation (without package)
STORAGE, USAGE PERIOD AND OTHERS
Temperature: -5°C ~ 50°C
Humidity : 35% ~ 95% (without dew condensation)
Air Pressure : 700hPa ~ 1060hPa
2. When storing the instrument, ensure that the following conditions are met.
a) The instrument should not be splashed with water.
b) Store the instrument where air pressure, temperature, humidity, ventilation,
sunlight, dust, salty/sulfurous air, etc. do not give any negative side effect.
c) Do not store or transport the instrument on a slope or uneven surface or in an
area where it is subject to vibrations or instability.
d) Do not store the instrument where chemicals are stored or gas is generated.
Temperature : -20°C ~ 70°C
ENVIRONMENTAL CONDITIONS FOR PACKAGING IN TRANSPORTATION
Humidity : 10% ~ 95%
STORAGE, USAGE PERIOD OF BATTERY
Storage condition Backup (Charged) – 30 days
Usage Condition – 90 Minutes (Continues)
Shelf Life Period – Two Years
Time taken for charging – 60 Minutes
09

TECHNICAL SPECIFICATION
Parameter Model: VIO-20 Model: VIO-30
Optical System Stereoscopic Stereoscopic
Power Supply
I/P: 110V/220V AC~60Hz/ 50Hz,
25VA
O/P: 6V DC, 2A
I/P: 100V –240V AC
50Hz –60Hz, 180mA
O/P: 5.7V DC / 700mA,
Battery -Rechargeable. 3.7V DC, 700mAh
Lamp 6V, 10W *
NICAD Halogen Bulb
Warm White Light LED
3.3V DC, 1W*
Intensity
Regulator
Continuously Variable * Liner Intensity Variable
Pupillary
Distance
54 –74 mm adjustable 54 –74 mm adjustable
Illumination Good, Clear Circular FieldGood, Clear Circular Field
Net Weight
1.850 Kg*
0.500 Kg*
Altitude
Used less than 2000 mts
Used less than 2000 mts
Pollution Degree
2 degree
2 degree

Aperture size at
the Instrument
4.0mm, 3.0mm, 1.2mm 4.0mm, 3.0mm, 1.2mm

Image Size at
the focus Point
(450mm from the
Window Glass)
80.0mm, 60.0mm, 25.0mm 80.0mm, 60.0mm, 25.0mm
Filters
Green, Blue
Green, Blue
Standard Accessories (Qty):
ACCESSORIES
#VIO-20
1.
VIO-30
Carrying Case (1)
Carrying Case (1)
2.
Power Supply (1)
Nokia Charger (1)
3.
Scleral Depressor (1)
Scleral Depressor (1)
4.
Funds Chart (1)
Funds Chart (1)
5.
Marking Pencil (4)
Marking Pencil (4)
6. Instruction Manual (1) Instruction Manual (1)
Optional Accessories at Extra Cost:
1.
20 Diopters Aspheric Viewing Lens
2.
Double Sided Co-observation Teaching Mirror
*Specifications and design are subject to change without notice for improvement.
10

CLEANING AND DISINFECTION INFORMATION
The Condensing Lens:
1) Clean the lens using hard contact lens cleaner and warm tepid water, NOT HOT
WATER. Then dry by blotting the lens with a soft lint free cloth or paper towel.
2) Never autoclave or boil a condensing lens.
3)
Place the lens completely in 3% hydrogen peroxide solution, Zepherin 1:1000, or
Pure 70% Isopropyl Alcohol for 5-10 minutes.
Lather and plastic can be wiped clean and disinfected by
1. 5 to 10 minute exposure to a fresh solution of 3% Hydrogen peroxide or
2. A fresh solution containing 5000 parts per million (Mg/L) free available chlorine and
1/10 dilution of common household bleach (Sodium Hypochlorite), or
3. 70% Ethanol or
4. 70% Isopropyl alcohol.
Maintenance by user
CHECKPOINTS FOR MAINTENANCE
Regularly maintain and check the instrument and its parts.
When using the instrument after a prolonged period of inactivity, confirm normal and
safe operation beforehand.
When the cover glass is stained, wipe it with the accessory clean cloth.
When this instrument is not in use for a prolonged period, put the instrument into the
carrying case safely.
Daily Checkups
Do not store the instrument where there is much dust.
When not in use, turn off the power.
CLEANING THE EQUIPMENT
Caution:
To avoid electric shock, do not remove the cover. Ask the
serviceman to repair the instrument.
Note:
Do not wipe the parts with volatile solvent. To prevent the
plastic parts from discoloring or deteriorating, do not use
benzene, thinner, ether or gasoline.
11

UNPACKING & INSTALLATION MODEL: VIO-20
Unpack the Instruments and save all packing materials. They are specially designed to
protect the Instrument and will make repacking easy if you ever need to ship your Indirect
Ophthalmoscope –VIO-20
After unpacking verifies the list of accessories us indicate below.
INSTALLATION
¾The initial installation will be done by VIEWLIGHT Trained Eng
ineers only. After
installation a performances check will be carried by VIEWLIGHT Engineers. Nobody
is authorized to install the Medical Equipment except VIEWLIGHT Engineers.
¾Connect the Output of the power supply to the indirect ophthalmoscope.
¾Ensure the intensity control in minimum position.
¾Connect the power card to the power supply.
¾Connect it to supply mains.
¾
Do not position the medical equipment to make it difficult to operate the
disconnection devices. (appliance coupler)
¾Fix the indirect ophthalmoscope on head with proper position.
¾Switch ON the power supply unit.
¾Sliding Knob Intensity may be adjusted as required and proper inter pupil adjust.
¾When it is not in use set the intensity control to minimum position and switch of the
equipment.
¾Don’t close the equipment immediately with any cover wait until it cools and cover
with proper dust cover.
1.
Binocular Indirect ophthalmoscope –VIO-20
2.
Power Supply
3.
Scleral Depressor
4.
Funds Chart
5.
Marking Pencil
6.
Teaching Mirror
7.
Power Card
8.
Instruction Manual
12

UNPACKING & INSTALLATION MODEL: VIO-30
Unpack the Instruments and save all packing materials. They are specially designed to
protect the Instrument and will make repacking easy if you ever need to ship your Indirect
Ophthalmoscope –VIO-30.
After unpacking verifies the list of accessories us indicate below.
INSTALLATION
¾The initial installation will be done by VIEWLIGHT
Trained Engineers only. After
installation a performances check will be carried by VIEWLIGHT Engineers. Nobody
is authorized to install the Medical Equipment except VIEWLIGHT Engineers.
¾Set the sliding switch position in OFF position in indirect ophthalmoscope.
¾Ensure the sliding switch position in OFF.
¾Connect the Charger to the supply mains..
¾After charging disconnect the charger from main supply, and also from the indirect
ophthalmoscope.
¾Fix the indirect ophthalmoscope on head with proper position.
¾Sliding Knob may be adjusted as required and proper inter pupil adjust.
¾When it is not in use set the sliding switch in OFF p
osition and switch of the
equipment.
¾
Don’t close the equipment immediately with any cover wait until it cools and cover
with proper dust cover.
1.
Binocular Indirect ophthalmoscope –VIO-30
2.
Nokia Charger
3.
Scleral Depressor
4.
Funds Chart
5.
Marking Pencil
6.
Teaching Mirror
7.
Instruction Manual
13

A Dual purpose Instrument with Outstanding Features
Binocular indirect ophthalmoscope has gained great acceptance in India among the leading
ophthalmologists. In many of the teaching hospitals, our ophthalm
oscopes are
recommended and used for teaching in residency programs.
The basic reasons for its big success are as follows:
9
It can be used as a Wide Angle; Standard; or Small Pupil Scope with a simple
adjustment, maintaining full, bright illumination.
9It has superior optics compared with any other ophthalmoscope on the market.
9It has a very east adjustment of P.D within 54 to 74 mm
9It is light weight and easy to adjust
9It has a large fin aluminium bulb holder that dissipates the heat better.
9It is very easy and quick to change the bulb
9
It has a deluxe lightweight chamois cover foam padded headband with multiple
adjustments. Foam pads can easily be exchanged after they worn out.
9With the new variable illumination, there is no need for neutral filters for photophobic
patients.
9The light can be adjusted from 0 to maximum with a rheostat.
9The filters are the best quality, coated glass, filters-not simple colored plastic sheets.
9It has the largest, brightest teaching attachment.
9“Lock in” type of lightweight power cord which will never disengage during use.
14

Binocular indirect ophthalmoscope (VIO-20 & VIO-30)
With Small Pupil Feature (SPF)
Special Feature of Binocular Indirect ophthalmoscope:
Head worn binocular indirect ophthalmoscope
Superior optical quality
Large, easily adjustable oculars
Comfortable light weight headband
Double sided teaching mirror accessory
Filters
Scleral depressor
Clinical Advantages of Binocular Indirect Ophthalmoscope:
Large field for viewing retinal topography
Greater illumination for penetrate opacities
Binocular stereoscopic presentation of height & weight factors
Capability to overcome distortions as found in amertropia
Added Clinical Advantages of SPF Binocular Indirect Ophthalmoscope:
Ready use for hospital rounds
Under surgical conditions with a constricted pupil
In case where dilation is not advisable or possible
Where a glaucoma patient is being given miotic therapy
Binocular indirect ophthalmoscope affords the viewer a perspective not available in direct
op
hthalmoscope. Views of the extreme retinal periphery and the ora serrata are readily
obtained and operative manipulation without contamination is a definite advantage.
A large variety of pathological conditions are more rapidly; brought into view and “larger
lesions can be seen in toto” and their significance will be better appreciated.
The Binocular Indirect Ophthalmoscope is an excellent instrument for all standard
applications, as well as with uncooperative pediatric patients and in cases where the
pup
illary diameter is less than 4 mm. the need for pupillary dilatation is virtually obviated
when using the SPF-capability of this dual purpose clinical instruments.
15

Model:VIO-20
BINOCULAR INDIRECT OPHTHALMOSCOPE
Part Nomenclature
Part List
1.
Head band Adjusting Knob
10.
Binocular cover
2.
Head band
11.
Teaching mirror mount
3.
Front strip locking knob
12.
Cover glass
4.
Headband Front strip
13.
Pupil adjusting lever
5.
Back holder Clamp screw
14.
Binocular plate
6.
Filter changing lever
15.
Eyepieces
7.
Front cover
16.
Tightening knob
8.
Tilting set
17.
Aperture changing lever
9.
Main housing
18.
Wire locker
16

WIRELESS INDIRECT OPHTHALMOSCOPE (LED)
Model: VIO-30
Part Nomenclature
Part List
19.
LED Cover
22.
Battery Cover
20.
Battery Charger Pin
23.
Battery Housing
21.
ON/OFF Switch
17

INDIRECT OPHTHALMOSCOPE POWER SUPPLY VIO-20
LIST OF PARTS
1. ON / OFF Switch 2. Intensity Control
3. Output Socket 4. 3 Pin Socket with Fuse
INDIRECT OPHTHALMOSCOPE VIO-30
Battery Details
Equipped with double IC protection circuit. These mobile
phone batteries consumed less battery, thus last long and
provides extra time. These batteries are really safe to use.
xA-Grade Li-ion Battery
xAluminium CAN
xLargest range of batteries available for almost all
kinds of mobiles.
xBusiness class Battery.
Avoid:-
¾Exposing battery to fire / Moisture / liquid / High temperature
¾Prolonged charging
¾Touching battery contacts with metal storage above 60°C or below -20°C.
¾Keep out of the reach of children
18
1
2
3
4

OPERATING INSTRUCTIONS
Small Pupil Binocular Indirect Ophthalmoscope:
1) Position as usual and adjust to fit with both right and left eye fields in coincide when
your target is 18 to 20 inches away.
2)
While viewing the target, slide oculars with thumps outward, toward the temporal
positions until only approximately 20 to 25 percent of the right and left viewing fields
overlap. The smaller overlap you employ-the smaller the pupil you can work with.
3) Position light so that image is in upper 1/3 of the viewing field.
4) Better viewing is obtained if a +30 Diopter Aspheric viewing lens is used.
5) To change back to standard indirect us
e, merely adjust your oculars to your normal
pupillary distance and both fields of view with right and left eyes will align be in
coincide.
Completely eliminated filament image:
Filament image or uneven brightness within the illuminated area has been considered an
unavoidable nuisance in Binocular Indirect Ophthalmoscope. However in Indirect
Ophthalmoscope, filament image is eliminated completely by means of a special optical
design. Thus Indirect Ophthalmoscope is able to give doctors a fully and evenly illuminated
fundus image, free annoying filament image.
Halogen Lamp:
Light source is halogen lamp, which shows up figure in their natural colors. Life of the bulb
is longer than the incandescent bulb.
LED Lamp
xHomogenous White light, adjustable light intensity, Long-lasting LED-illumination
free of UV and IR
xMinimal or Less Heat radiation to halogen based light source
xInstant on & Off
xEnvironment friendly, ROHS complaint, no Mercury
Low cost of ownership
x50000 burning hours of nominal LED-life expectance ensure many years of reliable
operation at minimal cost.
19

FUSE REPLACEMENT
The power supply fuses are located at the rear of the power supply assembly.
First disconnect the mains power from your Indirect ophthalmoscope.
)Having first disconnected your indirect ophthalmoscope from the mains power
supply, remove the fuse holder assembly by pull out the holder or by using external
tools.
)Carefully withdraw the holder from the power supply.
)A visual inspection will indicate a blow fuse, or a circuit continuity tester may be used.
)Replace the blown fuse.
)Replace the fuse holder.
)Re-connect the mains power to the Indirect Ophthalmoscope, switch ON and check
the bulb glow.
1Make sure that the power of the instrument is OFF
and then unplug the power cord.
2Push the claws at the both ends of fuse holder with
a slotted screwdriver and remove the fuse
holder.
3Replace the fuse with a new accessory fuse.
4. Push in the fuse holder until "click" is heard
20