China CCE-SW100 Manual de usuario

User’s Manual

For

Electronic Keratometer

Content

Content..........................................................................................................................0

Introduction:..................................................................................................................1

Product Performance:...................................................................................................1

Technical Data ..............................................................................................................1

Configuration.................................................................................................................2

1.Main configuration.....................................................................................................2

2.Parts and functions....................................................................................................2

Applicability...................................................................................................................3

Measuring contraindications.........................................................................................3

Safety Classify..............................................................................................................3

Symbolic description.....................................................................................................3

Notice............................................................................................................................3

Environmental requirement...........................................................................................3

Installation.....................................................................................................................4

How to use....................................................................................................................4

1.Display screen...........................................................................................................4

2.How to measure ........................................................................................................5

3.Measurement process...............................................................................................5

Measurement and print.................................................................................................6

1 Prepare: ..................................................................................................................6

2 Focus: .....................................................................................................................6

5.Notes in measuring....................................................................................................6

Battery...........................................................................................................................8

Product maintenance....................................................................................................9

1.Routine maintenance ................................................................................................9

2.Cleaning lens.............................................................................................................9

3.Calibration..................................................................................................................9

Package and transport..................................................................................................9

Trouble shooting.........................................................................................................10

Warranty：..................................................................................................................11

Electronic Keratometer User’s Manual

Introduction:

Dear User：

Welcome to use CCE-SW100 Electronic Keratometer.

We introduce this instrument to you by two parts: interface and operation. This User’s Guide is designed

as a training and reference manual. We recommend you read carefully and follow the steps in this guide

to ensure that the machine would have optimal performance.

Product Performance:

Electronic Keratometer is made of three parts, including light source, Measurement of optical system and

display system. To focus, the operator need make the unit up and down, , back and forth. When the

focusing condition is met, When all the four image points are in the center of the screen, instrument will

calculate automatically the curvature radius and diopter and display the result on the screen.

Technical Data

Measuring range：6.5mm～9.5mm curvature radius

Center measuring area of Corneal Radius: Φ3mm～Φ4mm;

Digital Display Resolution of curvature radius: 0.01mm;

Precision of curvature radius of cornea: ±0.05mm;

Axial resolution of the main meridian: 1°;

Radial deviation of the measurement of the main meridian

a）curvature radius deviation of the main meridian≤0.3mm, measurement of main meridian axial

deviation: ±4°;

b）curvature radius deviation of the main meridian＞0.3mm，measurement of main meridian axial

deviation: ±2°;

Output: Wireless infrared thermal printer;

Voltage: DC4.5V（three AA battery）;

Rated input power: 500mW+15％;

Weight: <0.5kg;

Dimension: 240mm×90mm×60mm.

Electronic Keratometer User’s Manual

Configuration

1.Main configuration

Electronic Keratometer is made of three parts, including light source, Measurement of optical system and

display system.

2.Parts and functions

Pic1

1. Level instrument: show level degree of the karatometer.

2. Speaker: “beep” after the completion of one measurement.

3. Display screen: show position of light spot and measurement results.

4. Left eye button: use to measure the left eye.

5. Print button: print the measurement results.

6. Right eye button: use to measure right eye.

7. Power switch: turn on of off the power.

8. Battery case: three batteries included.

9. Infrared sensor: transfer signal with infrared printer.

10. Lens: receive reflect lights and reflect them to the optical sensor.

Electronic Keratometer User’s Manual

11. Parallel illuminant: emits four parallel lights which are strictly symmetrical to the center with a certain

angle between each other.

12. Infrared illuminant: during the focusing process, four infrared light will be emitted.

13. Focusing point illuminant: fixed with the relative position of level two parallel light, to determine the

focusing position.

Applicability

Electronic keratometer is a precise optical measure instrument, designed for detecting curvature radius

and diopter of cornea in hospital.

Measuring contraindications

The following inflammation may result in error measurement:

Keratitis, corneal ulcers, conjunctivitis, corneal edema, Corneal postoperative and other patients with

irregular corneal.

Safety classify

Device type：Type B, power inside, normal device.

Symbolic description

Type B

Notice

Before operate the unit you should through the company training。

You must take off the battery when it lie idle for a long time。

Environmental requirement

Transport and save:

Ambient temperature: -40℃~+55℃

Relative moisture: ≤95%

Atmospheric pressure: 500hPa~1060hPa

Working;

Ambient temperature: +5℃~+40℃

Relative moisture: ≤80%

Atmospheric pressure: 700hPa~1060hPa

Power

Help you use the unit in a better way.

May destroy the device, indicate how to prevent.

Electronic Keratometer User’s Manual

Installation

1. refer to the packing list, and check missing

2. Put the battery in the battery compartment

3. Press the power button and start the unit

Pic.2

How to use

1.Display screen

Pic .3 is the display screen. The readings on the left are for the right eye, while the readings on the right

are for the left eye. They are (from top to bottom):

Curvature radius of long axis (or diopter) of long axis

Curvature radius of short axis (or diopter) of short axis

Axial angle: (unit: degree)

Measurement times

Mean variance of curvature radius (or diopter) of long axis

Mean variance of curvature radius (or diopter) of short axis

Collected data has two way of display: the radius of curvature display and refraction display. Click

both left and right button to switch.

7.78

7.98

0.01

0.00

7.78

7.98

0.01

0.00

Electronic Keratometer User’s Manual

2.How to measure

40mm

Pic.5 Right position when measuring

3.Measurement process

Power on

Patient get ready

Measurement

Finish Measuring

and print

Power off

Prepare the equipment

Focusing

Switch the eye mode(R/L)

Display the data

Patient preparation

Let the examinee look at the green point in the keratometer with a best posture to cooperate with the

1. 电子角膜曲率仪平面

2. 眼轴线

3. 平行光

4. 距离 40mm-50mm

1. Plane surface of keratometer

2. Eye axial line

3. Parallel lights

4. 40mm distance

5. point source

Pic. 6

Electronic Keratometer User’s Manual

examiner. Ensure that the keratometer plane perpendicular to the axial of the patient, the handle is

parallel to the nose of patient.

Measurement and print

1 Prepare:

Switch on and press the measure button to turn on the four illuminates ( press left eye button to measure

left eye and press right eye button to measure right eye). Hold the bottom of the keratometer and place it

at a distance 50mm from the cornea.

Measure symbol “==”： when measuring right eye, this symbol appear at right eye data display

area; when measuring left eye, the same with measuring tight eye

2 Focus:

Remind the patient look at the green point in the keratometer，adjust it，ensure the pupil in the middle of

the screen, then move the Keratometer from far to near. Be sure the pupil in the middle of the screen.

Now the screen is high light, the eyeball, iris and pupil is show in the screen. When getting close to

cornea, light spot gradually focused clear location(near the measurement point). The infrared light will

close after the keratometer turn into the measurement state, the screen dimmed, and the focus hint

appears.

3 Print：

The keratometer will give a short “beep” after each measurement, and each eye can be measured 5

times continuously with this keratometer. A long “beep” will be given after completion of 5 measures and

the average will be shown on the screen. If it is less than 5 times, average of these measurements will be

also shown on.

If there is no operation more than one minute, the program automatically enters sleep mode, press the

button, it can wake-up, the measuring data will not lost.

If you want to stop measuring, ensure power off, in the sleep mode, Light source of level bubble is still

on.

5.Notes in measuring

1) Measurement position

Right hand hold Keratometer handle, the left hand support it(to prevent the small-scale shaking while it

hang in the air), Keep Keratometer plane perpendicular to the axial length.

2) Eye preparation

Electronic Keratometer User’s Manual

眼睑遮住对焦区睫毛遮住对焦区正确状态

Not focusing Not focusing Focusing

Pic. 7

3) Focus hint

Pic.8

Forth and back focusing:When appearing real line，make the keratometer close to the eyeball, when the

broken line appear, make the keratometer far away the eyeball.

Display plane：Six light spot should be in the center of the screen, the deviation from the center farther

away, the longer the voice of the speaker, whereas the more rapid, suggesting that move to

the opposite side.

Second Focus: After focus has been completed. The Keratometer shaking, eyes closed for too long or

other reasons, resulting in less than six light spots detection, the program will automatically

exit measurement and re-focus.

If there is " * * * " at the bottom of the screen center, , that’s because the focus point is too large.

4) Measuring effectiveness

If the standard deviation of long axis or short axis radius curvature below 0.02, then the effectiveness

of measurement is not high, we suggest retest again. This may due to high-frequency flutter eye, tear

film breaking or operator shaking hands and so on.

Measured with different manufacturers product, due to different design, they measure corneal

curvature in different regions, so measurement results are also different. This is not absolute error,

but measurement of regional differences.

Environmental light shines on the cornea will produce stray light, this will make a effect on measurement

Eyelids cover the focus areas

Eyelashes cover the focus areas

Correct state

Electronic Keratometer User’s Manual

results. So you’d better test the patient in the room where there is little light, like dark room.

Battery

If the battery shaped icon appears above the display screen, the battery is low, less than 1 hour battery

life remaining.

If you continue to prolonged use, when the power is low, the machine will automatically enter the sleep

state.

Replacing the battery

Hold the keratometer with one hand, press the upper part of the battery cover with another hand to

open the cover( see Pic 9&Pic.10), put into three batteries , pay attention of the batter direction(see

Pic.11). Then cover it. Put the batter on the cloth band, so that the batter can esaily take off.

Pic.9 Pic.10 Pic.11

Electronic Keratometer User’s Manual

Product maintenance

1.Routine maintenance

1. This instrument should be store in a place with good ventilation, and without direct sun irradiation.

2. Don’t use organic solution to clean the instrument, like thinner, or it will cause instrument corrosion.

Avoid any water or other liquid filtering into the machine. Switch off before cleaning.

3. This ketatometer is a delicate instrument, don’t press, shock or drop it with strength.

4. Check the batteries periodically to see if they are corroded. If the machine hasn’t been put into use

for a long time, the batteries should be taken out.

5. Don’t try to disassemble the machine yourself when there comes a problems. Please contact the

company or the sales person.

2.Cleaning lens

The screen, lens and illuminants of this instrument should be wiped with special tissue to avoid any

laceration.

3.Calibration

1. Keratometer should calibrate with standard eyeball which used for cornea measuring ;

2. After keratometer repairing, it calibrate with standard eyeball which used for cornea measuring

Package and transport

Packed Keratometer is not allowed transport with flammable, explosive, corrosive items at the same time,

It should keep away from shock, severe vibration and moisture in the transportation.

Curvature should be stored at ambient temperature -20 ℃~ 55 ℃, relative humidity of 10% to 100%,

non-corrosive gases, strong mechanical vibration, shock and magnetic field environment. Avoid direct

sunlight, with good indoor ventilation.

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