Acta Optica Sinica, Volume. 37, Issue 1, 122003(2017)
Diffractive Aspheric Contact Lens to Correct Myopic-Presbyopia
The myopia will suffer presbyopia with aging. A diffractive aspheric contact lens (CL) is designed, aiming to correct myopic-presbyopia with a pair of glasses. In this design, myopia is corrected by the aspheric surface of the CL and presbyopia is corrected by the diffractive rings. The CL is optimized based on a myopic-presbyopia eye model considering 2.00 diopters of myopia and an accommodation of 2 D. Five object locations covering a range from infinity to 250 mm are considered. The optical properties of the myopic-presbyopia eye model with CL of 0° and ±4° field of view are researched. As a result, with the CL, the visual acuity looking at different locations are in a range from 1.3 to 1.5 in photopic vision (2.8 mm pupil diameter), except slightly worse infinity visual acuity (0.9), and the visual acuity looking at different locations remains above 1.0 in mesopic vision (4.5 mm pupil diameter). Additionally, the aberrations, such as coma, astigmatism and distortion, of the central visual field are reasonable after CL is worn. Therefore, the designed CL provides high optical performance and visual performance for myopic-presbyopia at 0 D and 4 D as well as high optical performance at intermediate distances, and the imaging performance is almost unaffected by the pupil.
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Jiang Lai, Liu Yongji, Wang Xiaolin, Wang Zhaoqi. Diffractive Aspheric Contact Lens to Correct Myopic-Presbyopia[J]. Acta Optica Sinica, 2017, 37(1): 122003
Category: Optical Design and Fabrication
Received: Jul. 18, 2016
Accepted: --
Published Online: Jan. 13, 2017
The Author Email: Lai Jiang (2120150298@nankai.edu.cn)