HD Analyzer
™ Chapter 3: Functioning
- 48 -
OSI:
Only in the case of
OSI.
It is the
Objective Scatter Index
, which
quantifies the degree of intraocular diffusion of the eye. For clarity, the value
of OSI obtained on a color scale is also represented. This visually shows
whether the value corresponds to a low, medium, or high degree of diffusion.
Values in green represent eyes with little diffusion. Values in yellow
represents eyes where the diffusion begins to be important (the beginnings
of a cataract, onset of opacification of a lens, etc.). Values in red represent
eyes with a significant degree of diffusion (mature cataract, etc.). The OSI
value is colored according to the visible color scale under the value itself.
Potential Visual Acuity:
It is the value of visual acuity that is estimated from
the optical quality presented by the eye (
MTF
). It can be understood as the
monocular visual acuity that the patient would present if it only depended on
optical factors without taking into account the retina or the posterior neuronal
processing. The result is shown in decimal and Snellen scales. The visual
acuity value is colored according to a color scale that appears when you
click on the value itself.
Figure 25. Input/output data
Next, each viewing option is further explained.
Summary of Contents for HD Analyzer OQAS
Page 80: ...HD Analyzer Chapter 3 Functioning 80 Figure 54 Example of a printed OSI report...
Page 81: ...HD Analyzer Chapter 3 Functioning 81 Figure 55 Example of a printed Light Condition report...
Page 82: ...HD Analyzer Chapter 3 Functioning 82 Figure 56 Example of a printed Depth of Focus report...
