Auto refractor topographer OPD-Scan II ARK-10000 - Excellent

The Nidek OPD-Scan II ARK-10000 Auto Refractor Topographer - Unmatched Versatility by integrating multiple crucial functions into a single device.

With its cutting-edge technology, it measures corneal topography, wavefront, auto-refraction, keratometry, and pupillometry in one operation. This capability allows clinicians to gather detailed data on corneal shape, ocular aberrations, and more.

The system utilizes the skiascopic phase difference principle to measure the refractive error map. It projects an infrared light beam onto the retina, then captures the reflected light with a set of photo-rotating detectors over a 360° area. This method provides an accurate measurement of the eye's total refractive error.

The corneal topography function relies on the Placido disk technology. The system captures the image of light rings reflected by the cornea and analyzes thousands of data points to map the shape and refractive power of the cornea.

A distinctive feature of the OPD-Scan II is its ability to measure high and low-order ocular aberrations using the OPD (Optical Path Difference) map, thus providing a comprehensive assessment of the eye's visual quality. Additionally, it offers various data maps, including total refractive error map, wavefront map, corneal topography map, high-order aberration map, and many more, allowing clinicians to analyze the eye's visual state in detail.

It features an automatic selection function of the best measurements among several, ensuring reliable results. Moreover, it operates swiftly, minimizing stress in a clinical environment. The new design of the forehead rest facilitates access to the patient's eyes, and it can measure a wide range of powers, including high cylinders.

For easy data management, the OPD-Scan II allows saving patient data on a removable hard drive, facilitating quick information transfer. It also offers networking capabilities, enabling remote data analysis via the OPD-Station.

• Spherical power range: -20.00 to +22.00 D
• Cylindrical power range: 0.00 to ±12.00 D

• Axis range: 0 to 180 degrees

• Measurement zone: 2.0 to 6.0 mm in diameter (measurement over 4 zones)
• Measurement points: 1,440 points (4 x 360)
• Measurement time: < 0.4 seconds
• Measurement method: Dynamic automatic refraction (skiascopy)

• Mapping methods: OPD, internal OPD map, wavefront maps, Zernike graph, PSF
• 19 vertical, 23 horizontal

• Measurement diameter: 0.5 to 11.0 mm (r=7.9)
• Dioptric range: 10 to 100 D
• Axis range: 0 to 359 degrees

• Dimensions and weight: 290 (W) x 524 (D) x 520 (H) mm / 25 kg

• Power supply: 100 / 120, 220 / 240 V AC, 50 / 60 Hz
• Power consumption: 170 VA

• Mapping methods: Axial, instantaneous, "refractive", elevation