ALADDIN
- User manual
Rev. 19 EN of 10/07/2019
77
True K (Barrett)
Barrett True K Formula v1.05, for eyes with prior myopic or hyperopic LASIK/PRK/RK.
Figure 56
In
“Target”
field the target refractive value for the cataract Post-OP must be inserted.
The
“Measurements”
field summarizes the measurement data.
In the “
HISTORY”
section select the correction type performed in the preceeding Refractive Surgery:
Myopic Lasik
Hyperopic Lasik
Radial Keratotomy
Insert the measured Refraction (Pre-Lasik Ref., in diopters) before the Refractive Surgery and the measured
Refraction (Post-Lasik Ref., in diopters) after the Refractive Surgery, accordingly the selected correction type.
Pre-Lasik Ref. must be negative for Myopic Lasik and Radial Keratotomy corrections, while must be positive
for Hyperopic Lasik.
Otherwise select “No History” if pre and post refractive surgery measurements are not available in order to
obtain an estimate of the correction amount based on the correction type and the eye biometry data.
Summary of Contents for ALADDIN HW3.0
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