Chronos*

Optimize workﬂow and grow your practicewith guided binocular refraction.

It is time
to reinvent
refraction.

REFRACTION SYSTEM

Chronos

Single instrument that occupies a minimal
amount of space and optimizes workflow
Chronos offers binocular autorefraction, keratometry measurements and visual acuitywith subjective testing in a single instrument.
Moving between measurements and setting the testing distance are no longer needed.

7 Value Propositions
Only Possible with Chronos*1
Binocular Objective Testing
Chronos offers simultaneous measurement of binocular autorefraction and keratometry.

Binocular Subjective Refraction
Visual acuity can be measured with both eyes opened,
which generates the data for binocular vision.

Seamless Testing
Testing is available with multiple distances and can be adjusted
depending on the patient's needs.

Unique Operability
Guided refraction system, SightPilot™, facilitates the exam
simply by tapping buttons based on the patient's response.

Time Saving
Exam time can be reduced and workflow optimized
by removing the need to move patients between instruments.

Tablet Control
All steps for objective and subjective refraction, including distance and near vision testing,can be done on a tablet while maintaining social distance.

Space Saving
3 measurements*3 are available in 1 instrument, which occupies only 120cm of depth*4.

*1

Only applicable with all the functions enabled. (Research done by Topcon Corporation as of October 2021)
Compared with our conventional devices.
*3
Binocular autorefraction, keratometry measurements and visual aquity with subjective testing*4
The depth varies depending on the size of the chair and wheelchair.
*223

Testing Modes for Your Needs
Standard Mode / SightPilot™
Standard Mode

Guided Refraction System - SightPilot™

Equipped with a user interface similar to that of a conventional
refractor*1, you can perform the exam following familiar operations.
Visual acuity, astigmatism, and binocular visual function tests can becompleted without hassle.

Exam workflow has been simplified by applying our unique algorithm. Simply tapping buttons
based on the patient’s response allows you to proceed the subjective refraction testing.

Seamless Testing
Testing distance* can be selected seamlessly, andthe visual acuity test can be customized basedon the patient's needs.
*The testing distance can be selected from 6 to 25cm.

Seamless Vision Comparison
Lens switching is now faster than a conventional
refractor. Vision comparison can be donesmoothly between measured refractive data,
current glasses power, and corrected power
after subjective test.

Red-Green Test

Astigmatism Test

Visual Aquity Test

Simply tap either“Red”, “Green” or “Equal”

Simply tap either"One", "Two" or "Equal"

Visual acuity test can be measured
and recorded simply by tapping the lettersthat the patient recognizes.

Smooth Exam Transition
Subjective refraction can be started with the refractive and keratometry data
gained from the binocular test automatically.

Variety of Charts
Chronos is equipped with various
styles of charts including for bothdistance and near visual acuity tests.
It is easy to switch between charts,and those that are frequently used
can be stored under the same tab
for seamless access.
The red-green, astigmatism andbinocular tests are also available fornear visual acuity testing.
*1 Compu Vision CV-5000

45

Refractive and Keratometry
Measurement

The patient's eyes are displayed liveon the tablet throughout the exam,
enabling the operator to check thepatient's status from a distance.

Binocular refractive and keratometry
measurements are quickly taken bytapping the auto-align camera launcher button.

Binocular Testing
The measurement can be done
under binocular vision for morenatural sight.

Chronos is an all-in-one instrument offering autorefractometer,phoropter and vision charts.
Smooth measurement is possible for patients withspecial access needs without moving between instruments.
Built-In Testing System

Cheek Rest

Convergence is automatically set
based on the patient's pupil distancefor near vision testing.

Cheek rest is equipped to realize thestable head position and the ease of
response during the subjective test.

Table
Adjustable vertical table height
for the patient's comfort.

BaseWheelchair accessible forsmooth testing of patientswith special needs.

System Integration
Chronos can be integrated
with lensmeter and otherexternal software forseamless data transfer.

Reception PC *1

Chronos

Lensmeter

PC *1*1 Third-party hardware

Server *1

67

SPECIFICATIONS & PERFORMANCEFEATURE

SPECIFICATION

Objective measurement
Refraction
measurement range

Corneal curvaturemeasurement range

Minimum
measurement unit

Spherical refractive power-25D – +22D 1

Cylindrical refractive power

0D – -10D 1

Cylinder axial angle

1° – 180°

Corneal curvature radius

5.00mm – 10.00mm

Corneal refractive power

67.50D – 33.75D(Conversion value when the corneal refractive ratio is 1.3375)

Spherical/cylindrical refractive power

0.12D

Cylinder axial angle

1°

Corneal curvature radius

0.01mmCorneal refractive power

0.12D

Display of measured value

Displayed on the screen of the operation controller

Minimum measurable pupil
diameter

ɸ2.0mmPD measurement range

50mm – 80mm

Minimum PD measurement unit

0.5mm

Subjective measurement
Refraction
measurement range

Minimum
measurement unit

Spherical power/ADD/ Cylindrical power
These must meet all the conditions mentioned atthe right 4-18.00D ≤ Equivalent spherical power ≤ +18.00D 2

Cylinder axial angle

1° – 180°

Horizontal prism(One eye movable range)±15.0

Vertical prism(One eye movable range)±2.5-8.00D ≤ Cylindrical power ≤ 0.00D 3

Spherical/ADD refractive power

0.25D

Cylindrical refractive power

0.25D

Cylinder axial angle1°Prism refractive power

0.15

Test distanceFar-/Near-point test distance can be set between 25cm and 6.096m

Visual acuity measurement range 60.05 – 1.6 decimalChartsVisual acuity charts, spherical power correction charts,
astigmatism correction charts and binocular function charts

Background luminance155±15cd/m2

Display of measured value

Displayed on the screen of the operation controller

Record of measured value

Printing by thermal printer/external printer, data output

Measuring head movement

Right-and-left direction

Inside -9.0mm to Outside +12.5mmUp-and-down direction

Down 15mm to Up 15mm

Back-and-forth direction

Forward: 20mm - Backward: 20mm

Measuring head rotary angle

Convergence 17.5° to Divergence 8.5° (Eyeball torsion axis center)

Power supply

AC100 - 240V 50-60Hz

Power consumption

160VA

Dimensions and weight (main unit)

525mm (H) × 722mm (W) × 278mm (D), 31.2kg*Not available in all countries. Please check with your local distributor for availability in your country.
1. The dioptric powers are indicated with reference wavelength λe = 546.07 nm
2. The conversion value with “VD=12mm” is described here.
3. The conversion value with the pupil power (VD=-3mm) is described here.
4. The value described here is the maximum value. The measurement range is smaller according tothe test distance setting for executing a test or the setting conditions of VD during measurement.

IMPORTANT

5. The value described here is the maximum value. The measurable range issmaller according to the combination of the patient’s PD and the test distance.
6. 0.1 – 1.6 complies with ISO 10938. ETDRS chart using Landolt Ring
(visual acuity 0.25 – 1.6) complies with ANSI Z80.21.

Subject to change in design and/or speciﬁcations without advanced notice. In order to obtain thebest results with this instrument, please be sure to review all user instructions prior to operation.
Medical device MDD Class Im. Manufacturer: Topcon Corporation.

TOPCON CORPORATION
75-1 Hasunuma-cho, Itabashi-ku, Tokyo 174-8580, JAPAN. Phone: +81-(0)3-3558-2522/2502 Fax: +81-(0)3-3965-6898 https://topconhealthcare.jp
TOPCON SINGAPORE MEDICAL PTE. LTD.
100G Pasir Panjang Road, #05-05, Interlocal Centre, SINGAPORE 118523
Phone: +65-68720606 Fax: +65-67736150
E-mail: med.sales.sg@topcon.com
https://topconhealthcare.sg
TOPCON INSTRUMENTS ( MALAYSIA ) SDN. BHD.
No.6, Jalan Pensyarah U1/28, Hicom Glenmarie Industrial Park, 40150 Shah Alam, Selangor, MALAYSIA
Phone:+60-(0)3-50223688 Fax: +60-(0)3-50313968
E-mail: mys_medical_sales@topcon.com
https://topconhealthcare.my
TOPCON INSTRUMENTS ( THAILAND ) CO., LTD.
77/162 Sinnsathorn Tower, 37th Floor, Krungthonburi Rd., Klongtonsai, Klongsarn, Bangkok 10600, THAILAND
Phone: +66(0)2-440-1152~7 Fax: +66-(0)2-440-1158
E-mail: tha_medical@topcon.com
https://eyecare.topcon.co.th
MEHRA EYETECH PRIVATE LIMITED
801 B Wing, Lotus Corporate Park, Graham Firth Steel Compound Goregaon (East) Mumbai 400063 Maharashtra, INDIA
Phone: +91-22-61285455
E-mail: sales@mehraeyetech.in
https://topconhealthcare.in
TOPCON (BEIJING) MEDICAL TECHNOLOGY CO., LTD.
Room 2808, Tower C, JinChangAn Building, No.82, Middle Section of East 4th Ring Road, Chaoyang District, Beijing 100124, P.R. CHINA
Phone: +86-10-8794-5176
http://topcon-china.net©2022 Topcon Corporation

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