Assessing the phase retardation in corneal tissues using a femtosecond laser

Abstract

We developed and validated a versatile test method for precise quantification of phase retardation in corneal tissues using a femtosecond laser. It is based on an experimental system for direct measurement of corneal phase rotation due to corneal birefringence effects using a dual-polarizer, computer-controlled, femtosecond laser design. It also includes a comprehensive analytical model using Jones matrices. The test method presented is used for quantification of phase retardation in corneal tissues by employing the experimental data obtained from corneal phase rotation measurements and using analytical model assessments. The experimental and theoretical results obtained, and thus, the system's high accuracy and repeatability potential for assessing the corneal phase retardation are validated using control phase retardation evaluation.

The effect of femtosecond laser processing conditions on the properties of a polarization imaging filter inside a silica glass

“…Polarization change of light through a polarization imaging filter can be expressed by Jones matrixes [10,11]. Jones matrixes represent optical materials such as polarizers or waveplates.…”