Effect of Higher Order Aberrations and Intraocular Scatter on Optical Quality Based on an Optical Eye Model
Feng Rao,
Xing Heng Zhao,
Ming Dong Zhang,
Yan Wang
Affiliations
Feng Rao
Tianjin Eye Hospital, Tianjin Eye Institute, Tianjin Key Laboratory of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Nankai University Eye Institute, Clinical College of Ophthalmology of Tianjin Medical University, Tianjin 300020, China
Xing Heng Zhao
Tianjin Eye Hospital, Tianjin Eye Institute, Tianjin Key Laboratory of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Nankai University Eye Institute, Clinical College of Ophthalmology of Tianjin Medical University, Tianjin 300020, China
Ming Dong Zhang
Tianjin Eye Hospital, Tianjin Eye Institute, Tianjin Key Laboratory of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Nankai University Eye Institute, Clinical College of Ophthalmology of Tianjin Medical University, Tianjin 300020, China
Yan Wang
Tianjin Eye Hospital, Tianjin Eye Institute, Tianjin Key Laboratory of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Nankai University Eye Institute, Clinical College of Ophthalmology of Tianjin Medical University, Tianjin 300020, China
The impact of intraocular scatter and higher order aberrations (HOAs) on ocular optical quality was investigated. An optical eye model was constructed using the measured ocular aberrations, corneal surfaces, axial length, and scatter fraction, and the impact of HOAs and scatter on modulation transfer functions (MTFs) was studied based on the newly established optical eye model. For uniform intraocular scatter, the monochromatic and polychromatic MTF decreased as the HOAs or scatter fractions increased independently at each spatial frequency, which implied that both were essential for visual quality. In addition, the scatter effect on MTF was more significant for the eye with less HOA. The combined deterioration effect of these two factors on the MTF was less than their summation, suggesting a potential compensatory mechanism between HOAs and scatter.
