Presbyopia Optana
Dynamic Stimulation Aberrometry (DSA)
Introduction of DSA
Start the Video Button to see the introduction of the Dynamic Stimulation Aberrometry.
Measurements
Measurements are simply performed via the aberrometer software in the same way you may be familiar with: Just select the target sequence on the DSA control-box and set the target distances on the optomechanical DSA unit in addition when using DSA capabilities. After the alignment of the patient in front of the aberrometer the target can be inspected with both eyes via the mirror arrangement in a natural way. Many safety measures like face protection were implemented to make application of DSA save. Mechanical design implements ergonomic aspects like beveled edges and clearence to cover patients with pronounced face and nose contours.
Wavefront dynamics
DSA comes with an additional software package for the sophisticated analysis of aberrometer data file sequences. Beside other options and settings it allows you to toggle groups of aberrations or single aberrations, to play online animations of data sequences or to generate AVI movies of the wavefront dynamics.
Eye response over time and stimulation
Another feature of the DSA software is the time sequence plot functionality to analyze and evaluate wavefront refraction and aberrations during the accommodation as a function of time. It allows you to select whatever you intend to be plotted over time like sphere, cylinder, axis, higher order aberrations or RMS values by simply click and go. You can mix these different information to e.g. plot sphere plus spherical aberration.
Each plot can be further customized regarding scaling, ticks and more concerning your special interests or examination or presentation purposes.
Plots in detail allow you to inspect the eye's response on the target stimulation when applied during the sequence in a versatile way. Such information will e.g. uncover the relation between sphere and spherical aberration and the influence and interaction of higher order aberrations on accommodation.
