Nidek ARK 710A autorefractómetro

Descripción

Esta descripcion esta disponible solo en Ingles

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