Low_resolution_Thesis_CDD_221009_public - Visual Optics and ...

CONCLUSIONS
IMPLICATIONS OF THIS RESEARCH
1. The results reported in this thesis are of direct application in laser
refractive surgery. The induction of spherical aberration is still a problem
in today’s LASIK surgery. We have demonstrated that most of the
increase in asphericty can be explained by purely physical factors, and
that biomechanical effects have a secondary impact on the shape of the
cornea in normal situations. We have obtained experimentally laser
efficiency correction factors, which along with the use of physical
models and the measurement protocols and optical and ablations
parameters obtained in this thesis, can be directly applied in the
evaluation of current algorithms and design of the next generation of
ablation profiles.
2. The results reported in this thesis demonstrate the great value of
aberrometry (corneal and ocular) in the contactology practice. Similar
protocols based on those followed in this thesis can be established to
help identifying the most suitable lens to each individual patient.
3. The results reported in this thesis on multifocal contact lenses have
important implications for the design of multifocal corrections in
general, not only in the context of contact lenses, but also in refractive
surgery or intraocular lenses. Providing the eye with an efficient
multifocal range is a complex problem. We have provided evidence that
the aberrations of individual eyes determine (and very often
compromise) the final depth of focus of a multifocal correction. Optical
factors must be considered prior to effects related to neural adaptation in
the design of multifocal lenses.
4. Surface metrology and ocular biometry techniques can benefit directly
from the developments of this thesis on physical models. These artificial
eyes can become useful tools for validation and calibration of laboratory
and commercial systems as profilometers, corneal topographers, or
Scheimpflug or OCT imaging techniques. In addition, they can be
implemented in systems for the in vitro assessment of contact lens and
calibration of laser ablation systems.
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