Tomey TMS-5, Инструкция по эксплуатации

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3.6.2 Analysis type
a) Shape map
Axial Power The axial power map is a corneal curvature map that
locates the curvature center on the optical axis. Paraxial
calculation using the conversion refractive index is
performed for conversion to refractive power. This map
is a good reference for the refractive power and shape
of the cornea. As this map shows the spherical corneal
surface in only one color if astigmatism is not included,
the normal cornea can be recognized at a glance.
[Keratometric]
This is the conventional “Standard (Sagittal) Map” of
TMS.
Similarly to the conventional TMS, paraxial calculation
is performed for conversion to refractive power,
regarding the cornea equivalent refractive index to be
1.3375.
[Posterior]
This is the axial power map of the posterior.
This map is drawn regarding the anterior corneal
center to be the reference, and paraxial calculation is
performed using the refractive index (cornea = 1.376
and aqueous humor = 1.336) of the Gullstrand model
eye for conversion to refractive power.
[Real]
This is the total power map of both anterior and
posterior.
The refractive power is calculated by adding the
corneal thickness correction to the sum of the anterior
and posterior refractive power.