IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image

IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image

PURPOSE To evaluate intraocular lens (IOL) tilt and decentration by anterior segment optical coherence tomography (AS-OCT) using 3-dimensional (3D) reconstruction method. DESIGN Prospective observational case series. PARTICIPANTS Thirty-nine patients (39 eyes) were included. METHODS The IOL positions of all eyes were examined by AS-OCT. Images were obtained in 4 axes (0-180 degrees, 45-22...

Research on Calculation of the IOL Tilt and Decentration Based on Surface Fitting

The tilt and decentration of intraocular lens (IOL) result in defocussing, astigmatism, and wavefront aberration after operation. The objective is to give a method to estimate the tilt and decentration of IOL more accurately. Based on AS-OCT images of twelve eyes from eight cases with subluxation lens after operation, we fitted spherical equation to the data obtained from the images of the ante...

Intraocular lens tilt and decentration: a concern for contemporary IOL designs.

PURPOSE To review published studies reporting the posterior chamber intraocular lens tilt and decentration after surgically uneventful implantation. Potential influences of normally occurring misalignment of modern designs of IOL on the optical performances are discussed. MATERIALS AND METHODS Published theoretical and clinical studies in relation to primarily implanted posterior chamber intr...

Intraocular lens alignment from an en face optical coherence tomography image Purkinje-like method

Mengchan Sun Alberto de Castro Sergio Ortiz Pablo Perez-Merino Judith Birkenfeld Susana Marcos Instituto de Óptica “Daza de Valdés” Consejo Superior de Investigaciones Científicas Serrano 121 28006 Madrid, Spain E-mail: [email protected] Abstract. Measurement of intraocular lens (IOL) alignment implanted in patients in cataract surgery is important to understand their optical performance....

Image Reconstruction from Incomplete Data