Product Description Keratron ONDA is a combination of a Corneal Topographer with the same features of the Optikon Corneal topographers product range and an Ocular Aberrometer to measure the refraction and aberration of the eye in different accommodation conditions.In fact is the NEW generation of Autorefractometer/ Keratometer, giving not only refractive and keratometric values but the entire corneal and aberrations maps with different pupillary and accommodative conditions.Today patients are demanding not only a good quantity of vision but also a satisfactory quality of vision. Keratron ONDA gives answer when a good patient satisfaction is not achieved. By the difference between the ocular and corneal aberration, the Internal Aberration is obtained to study IOL's cataract and other pathologies. In case of displaced or tilted or rotated toric IOL it is possible to evaluate the efficacy of a reintervention.The data, thanks to special software, are used to drive the lathes to produce Soft and GP contact lenses. The lens has different thickness in order to compensate low and high order aberrations.In practice this method has been used with the customized ablation in refractive surgery with Excimer Lasers. In this case the Laser, driven by the corneal Topographer data, sends the ray in different corneal area to generate a new corneal profile without aberration.With contact lens, on the contrary, there is no tissue ablation but the differential thickness of the lens will fill the cornea in order create a final aberration free corneal profile. The ocular aberrations can be measured with Keratron™ ONDA with the lens wearied by the patient to evaluate its efficacy.TOPOGRAPHICAL PRECISION- Ophthalmometer Data (sim-K) : Within ±0.25D on a normal cornea- BFS (Best Fit Sphere) deviation : Typically within ±0.15DABERROMETRY- Analysis area on the pupil : 7x7 mm std (7.3x7.3 mm max)- Sensor : Microlens Array OPTIKON design- Spatial resolution : 128 microns (2350 points in the maximum pupil)- Wavelength SLD : 840 nm- Wavelength LEDs : 750 nm and 590 nm- Measurement Range : -20D +10D (sphere) ±10D (cylinder)- Defocus compensation : -11D +5D (automatic and manual)- Objective measurement of the patient’s accommodative response : from +1D -4D over the defocus- Zernike polynomials : 7th orderENVIRONMENTAL SPECIFICATIONS- Storage : temp. range between -10°C and 60°C humidity 0-100% (cond. incl.) atm pressure from 500 to 1060 hPa- Operation : temp. range from 10°C t o +40°C humidity 30-75% (non-condensing) atm pressure from 700 to 1060 hPaELECTRICAL SPECIFICATIONS- Input voltage : from 100 to 240 Volts AC- Frequency : 50/60 Hz- Current consumption : 70 VA- Fuses : 2 x T 1 A (5 x 20 mm)- Regulatory compliance : Medical Device Directive 93/42/EEC- Technical standards : EN 60601-1:1998; EN 60601-1-1:2000;EN 60601-1-2:2001+A1:2006; IEC 60825-1:1993+A1:1997+A2:2001; EN 60601-1-4:1997+A1:1999 Warranty Information 1 Year Warranty