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Clinical Experience with the Tracey VFA in Brazil. Renato Ambrósio Jr. Universi dade de São Paulo Oftalmologia. Instituto Benjamin Constant. Rio de Janeiro. Why should I buy a wavefront analyzer?. Goals of the Preop exam in refractive surgery. Screening refractive candidates
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Clinical Experience with the Tracey VFA in Brazil Renato Ambrósio Jr. Universidade de São Paulo Oftalmologia Instituto Benjamin Constant Rio de Janeiro
Goals of the Preop exam in refractive surgery • Screening refractive candidates • Patient education • Surgical Planning R.Ambrósio Jr, M.D.
Screening refractive candidates • Complete eye exam • Complementary exams • Interview with the patient R.Ambrósio Jr, M.D.
Preop exam in refractive surgeryWhich exams should we do? Evidence based medicine R.Ambrósio Jr, M.D.
UW Refractive Clinic Study • 0.9% of the candidates had keratoconus or pellucid marginal degeneration R.Ambrósio Jr, M.D.
CT View – Scales for Corneal Topography R.Ambrósio Jr, M.D.
KERATOMETRYCORNEAL TOPOGRAPHY REFRACTION WAVEFRONT R.Ambrósio Jr, M.D.
Advantages of Tracey-VFA for screening refractive candidates • Accurate Refraction ~ 0.01 D (vs 0.25D) • Manifest and Cycloplegia comparison • Identification of high risk cases for night vision problems after conventional ablations (HOA and Total Aberrations) • Integrated analysis with Corneal Topography (CTView V.5 software) R.Ambrósio Jr, M.D.
Screening refractive candidates with the Tracey VFA – Bad candidate (BSCVA 20/15-2)
PSF Simulation for Patient education Bad candidate (BSCVA 20/15-2) All Aberrations Only HOA
Screening refractive candidates with the Tracey VFA Instituto de OlhosRenato Ambrósio Rio de Janeiro
PSF Simulation for Patient education All Aberrations Only HOA
Qualidade da Visão R.Ambrósio Jr, M.D.
Integrated Analysis with the CT View WF – Topo = Intraocular Optics
Clinical Applications: Monocular Diplopia – Poor CL Fit after PKP
Contact Lens Migrate Inferiorly causing diplopia Importance of Scales Aplicações do Wavefront Entendendo as queixas do paciente
Irregular eyes measured with Tracey Instituto de OlhosRenato Ambrósio Rio de Janeiro
Irregular eyes measured with Tracey Instituto de OlhosRenato Ambrósio Rio de Janeiro
Validação de Exames que não utilizam Iluminação Inframermelha r= 0.68
Pupil Measurements with the Tracey VFA Instituto de Olhos Renato Ambrósio