Nidek ARK 710A autorefractometer

Description

Nidek ARK 700A and 710A are auto refractometers to determine objective refraction and measure each parameter of the cornea either simultaneously or separately. The ability to start the research automatically contributes to the general flexibility of this device a lot.

The measurement time is really quick: just 0.1 sec for keratometry and 0.3 sec for refractometry. If you want to buy Nidek ARK 700/710A at a great price, Sky Optic is always there to help you.

Technical caracteristics

Measurement of refractive error (AR measurement)

• Spherical power (S) Measurable range –20.00D – +23.00D (VD = 12 mm)

Indication steps 0.01D/0.12D/0.25D

• Cylindrical power (C) Measurable range 0D – ±12.00D

Indication steps 0.01D/0.12D/0.25D

Cylinder axis (A) Measurable range 0º – 180º

Indication steps 1º/ 5º

• Minimum pupil diameter measurable ö 2.5 mm
• Vertex distance 0 mm/10.5 mm/12 mm/13.75 mm/15 mm/16.5 mm
• Target fixation Auto-fogging system

Measurement of corneal curvature (KM measurement)

• Corneal curvature (R1, R2, AVE)

Measurable range 5.00 mm – 13.00 mm

Indication steps 0.01 mm

Accuracy ±0.05 mm

• Corneal refractive power (R1, R2, AVE)

Measurable range 25.96D – 67.50D (n=1.3375)

Indication steps 0.01D/ 0.12D/ 0.25D

Corneal refractive idex n = 1.3375/ 1.336/ 1.332

• Corneal astigmatism (CYL)

Measurable range 0D – ±12.00D

Indication steps 0.01D/ 0.12D/ 0.25D

• Corneal axis of astigmatism (AXIS)

Measurable range 0º – 180º

Indication steps 1º/ 5º

• KM measurement range ö 3.3 mm on the cornea (For corneal curvature of 7.7 mm)
• Size of mire ring ö 2 mm on the cornea (For corneal curvature of 7.7 mm)

Measuring time

• AR measurement Less than 0.3 seconds
• KM measurement Less than 0.1 seconds

PD measurement

• Measurable range 30 mm – 85 mm (Near PD: 28 mm – 79 mm, Near working distance= 35 cm)

• Indication steps 1 mm

CS measurement

• Measurable range 10.0 mm – 14.0 mm
• Indication steps 0.5 mm

PS measurement

• Measurable range 1.0 mm – 10.0 mm
• Indication steps 0.5 mm

See in video the auto refractometer-keratometer Nidek ARK 700A: