Transcript Document 7528424

Galilei System Combining Double Scheimpflug and Placido
Technology
Renata T. Kashiwabuchi MD, Carlos G. Arce MD,
Mauro Campos MD, Paulo Schor MD
Ocular Bioengineering and Refractive Surgery Sectors, Institute of Vision
Department of Ophthalmology, Paulista School of Medicine
Federal University of São Paulo, Brazil
Financial Disclosure:
Authors do not have financial or commercial interest in mentioned equipments
Dr Arce is Consultant & Territory Manager for Latin America, Vista Optics Limited, Widnes, UK;
R&D Consultant, Ziemer Group AG, Port, Switzerland; Speaker, Bausch & Lomb do Brasil,
and Diretor Geral, R.E.I. Comércio Ltda., Campinas, SP
Dr. Campos is Consultant of Alcon Laboratorios do Brasil
INTRODUCTION
• Galilei is a multifunctional system that integrates the two more valuable technologies presently
available to study the cornea: Placido reflection of rings and dual Scheimpflug imaging.
• Combined system displays maps with 14,400 point values of real topography, elevation and
pachymetry calculated from 122,000 data points assessed from the cornea and the anterior
segment of the eye
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Features:
Two Scheimpflug cameras
•
Double Placido calculation
•
Digital top view camera
•
Iris recognition device
•
Cyclotorsion correction
•
Anterior surface topography
•
Posterior surface topography •
Corneal Pachymetry
•
Anterior chamber pachymetry •
Corneal 3-D densitometry
•
Lens 3-D densitometry
•
Biometry of anterior segment •
Zernike WF analysis of cornea
Differential maps
Zoom of all Scheimpflug images
Applications:
Keratoconus diagnosis
Preop/postoperative exams
Follow up of corneal diseases
Topographic biomechanical signs
Cataract diagnosis
Biometry of anterior segment
Digital goniometry
Eye photography
Photographic records
Corneal power for IOL calculation
Postop of multi-focal & toric IOLs
WF study of the cornea
Apparent slit images
Light slits
45°
R
L
Left
camera
Right
camera
Correction of Pachymetry bias by averaging data
Averaged
Deviation left
Deviation right
from the right and left camera
40
Exams are
centered to
Placido
reflection
and to
Scheimpflug
images
27.9
[µm]
20
0
•
•-2.6 •
•
•
-0.64
-0.16
•
-0.16
•
-0.64
-2.6
•
-20
-33.1
-40
-1
-0.5
0
Dezentration
[mm]
Descentrationx[mm]
0.5
1
12
9
3
6
Iris recognition and cyclo-torsion correction devices
localize the real position of each slit
9
6
12
3
Double Placido analysis of
anterior surface
Real Placido and Scheimpflug Topography
4xMap of RK showing both surfaces
Refractive report of post myopic LASIK
4xMap of FFKC with KPI 14%
Showing anterior and posterior axial
curvature and digital goniometry
Corneal total power
For IOL calculation
after refractive
surgery

Keratoconus Report
Astigmatism of 4.16 D with KPI 17%
Astigmatism of 6.7 D with KPI 0%
4xMap of KC with anterior
surface steeper than posterior
4xMap of KC showing both surfaces
Digital B&W and color 3-D corneal, lens, and anterior chamber densitometry, imaging and biometry
Top view
eye
photo
and
metrics
Dislocated IOL
Clinical Applications
Multi-focal IOL position
3rd day
post-LASIK
Scheimpflug images after Corneal Transplant
DLK Evolution
1st day after 2nd day after 7th day after
washing
washing
washing