A cubic phase mask in the shape 7.07 μm × (Z -Z )-0.9 μm × Z is a good solution for obtaining a range of clear vision with at least 0.1 logMAR visual acuity (and close to 0.0 logMAR, 6/6, 20/20 and decimal Snellen 1.0) between 6.0 and 0.4 m for a pupil diameter of 5.0 mm. Our results seem to be a good starting point for future studies of this type of cubic phase mask solutions for presbyopia.
Presbyopia correction involves different types of studies such as lens design, clinical study, and the development of objective metrics, such as the visual Strehl ratio. Different contact lens designs have been proposed for presbyopia correction, but performance depends on pupil diameter. We will analyze the potential use of a nonsymmetrical element, a cubic phase mask (CPM) solution, to develop a contact or intraocular lens whose performance is nearly insensitive to changes in pupil diameter. We will show the through focus optical transfer function of the proposed element for different pupil diameters ranging from 3 to 7 mm. Additionally, we will show the images obtained through computation and experiment for a group of eye charts with different visual acuities. Our results show that a CPM shaped as 7.07 μm*(Z33-Z3-3)-0.9 μmZ20 is a good solution for a range of clear vision with a visual acuity of at least 0.1 logMar from 0.4 to 6 m for pupil diameters in the 3- to 7-mm range. Our results appear to be a good starting point for further development and study of this kind of CPM solution for presbyopia.
USC-OSA is a student chapter whose objective is to bring Optics knowledge closer to the non-optics community. The activity developed at the Hospital school was one of the most important last year. It was consisted in a few Optics experiments and workshops with hospitalized children of different ages and pathologies. The experiments had to be adapted to their physical conditions with the aim of everyone could participate. We think this activity has several benefits including spreading Optics through children meanwhile they have fun and forget their illness for a while.
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