Chronos

Automated Binocular Refraction System

Increase patient convenience, optimize workflow and grow your practice – without compromise.

Chronos combines binocular autorefraction and keratometry measurements with binocular subjective testing and visual acuity in a single instrument that occupies a minimal amount of space and optimizes workflow.

Introducing SightPilot™

SightPilot™ is optimized for understanding and efficient workflow, facilitating delegation when required.
• SightPilot™ simplifies the user interface to provide a step-by-step guide through the refraction process.
• At each step, the operator is given instructions to proceed with the refraction, based on the patient’s response.

Delegate

SightPilot™ is a guided refraction system that simplifies the exam and facilitates delegation.

Save Space

Chronos combines binocular autorefraction and keratometry measurements with binocular subjective testing and visual acuity in a single instrument that occupies minimum space. Chronos reduces the number of conventional refraction lanes and additional refractometers needed.

Grow

Chronos offers the versatility critical for growing your practice.

*Refraction time can vary by patient.

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OBJECTIVE MEASUREMENT
Refraction measurement range

Spherical refractive power -25D – +22D 1
Cylindrical refractive power 0D – ±10D 1
Cylinder axial angle 1° – 180°

Maestro2

Corneal curvature radius 5.00mm – 10.00mm
Corneal refractive power 67.50D – 33.75D
(Conversion value when the corneal refractive ratio is 1.3375)

Minimum measurement unit

Spherical/cylindrical refractive power 0.12D
Cylinder axial angle 1°
Corneal curvature radius 0.01mm
Corneal refractive power 0.12D

Display of measured value

Displayed on the screen of the operation controller

Minimum measurable pupil diameter

ɸ2.0mm

PD measurement range

50mm – 80mm

Minimum PD measurement unit

0.5mm

SUBJECTIVE MEASUREMENT
Refraction measurement range

Spherical power/ADD/ Cylindrical power
These must meet all the conditions mentioned at
the right 4
-18.00D ≤ Equivalent spherical power ≤ +18.00D 2
-8.00D ≤ Cylindrical power ≤ 0.00D 3
Cylinder axial angle 1° – 180°
Horizontal prism
(One eye movable range)
±15.0 5
Vertical prism
(One eye movable range)
±5.0

Minimum measurement unit

Spherical/ADD refractive power 0.25D
Cylindrical refractive power 0.25D
Cylinder axial angle 1°
Prism refractive power 0.1

Test distance

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

Visual acuity measurement range

6 0.05 – 1.6 decimal

Charts

Charts Visual acuity charts, spherical power correction charts,
astigmatism correction charts and binocular function charts

Display of measured value

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 +12.5mm
Up-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

Topcon Healthcare – ChronosBrochure – EMEA_ENG_V2

Topcon Announces the US Launch of Chronos

Topcon Chronos is a complete digital refraction solution that combines autorefraction, keratometry, and subjective refraction in a single device that occupies less than four feet of space. The fully automated system, which features the guided refraction software, SightPilot®, can be easily operated by anyone in the practice. Furthermore, binocular testing means refractions take just three and a half minutes*, allowing eye care providers to see more patients and grow their practice without adding exam lanes or trained technicians.

Read more >
  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 to the test distance setting for executing a test or the setting conditions of VD during measurement.
  5. The value described here is the maximum value. The measurable range is smaller according to the combination of the patient’s PD and the test distance.
  6. 0.1 – 1.6 complies with ISO 10938

Note: Not all products shown on this site are offered in every market. Product features may vary by country and are subject to change. For products specific to your area, please visit the website appropriate to your country or contact Topcon Healthcare for more information.