Optimized multielement accommodative intraocular lens with a four-freeform-surface Alvarez lens and a separate aspheric lens

Liang-Yu Wang; Bai-Cheng Li; Bin Sheng; Bang-Lian Xu; Yuan-Shen Huang; Zheng-Ji Ni; Da-Wei Zhang

doi:10.1364/AO.58.007609

Applied Optics
Vol. 58,
Issue 27,
pp. 7609-7614
(2019)
•https://doi.org/10.1364/AO.58.007609

Optimized multielement accommodative intraocular lens with a four-freeform-surface Alvarez lens and a separate aspheric lens

Liang-Yu Wang, Bai-Cheng Li, Bin Sheng, Bang-Lian Xu, Yuan-Shen Huang, Zheng-Ji Ni, and Da-Wei Zhang

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Liang-Yu Wang, Bai-Cheng Li, Bin Sheng, Bang-Lian Xu, Yuan-Shen Huang, Zheng-Ji Ni, and Da-Wei Zhang, "Optimized multielement accommodative intraocular lens with a four-freeform-surface Alvarez lens and a separate aspheric lens," Appl. Opt. 58, 7609-7614 (2019)

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- Medical Optics, Microscopy, and Biotechnology
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About this Article
History
- Original Manuscript: July 4, 2019
- Revised Manuscript: August 26, 2019
- Manuscript Accepted: August 27, 2019
- Published: September 19, 2019

Abstract

This paper proposes an accommodative intraocular lens (IOL), which consists of a two-element Alvarez lens and an aspheric lens for changing focal power and refractive power, respectively. The four-freeform-surface Alvarez lens is optimized for a multiple field of view; further, the aspheric lens also corrects the aberrations induced by the corneal asphericity of the human eye over the whole range of accommodation. A simulation using optical design software demonstrates its excellent performance in that the values of the modulation transfer function at 100 cycles/mm all reach $\sim 0.4$ with a $\pm 5 °$ field of view for 3 and 5 mm pupils.

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Anterior corneal radius	7.77 mm
Posterior corneal radius	6.40 mm
Corneal thickness	0.50 mm
Anterior chamber depth	3.16 mm
Anterior corneal asphericity	−0.18
Posterior corneal asphericity	−0.60
Corneal refractive index	1.376
Refractive index of the aqueous and vitreous humors	1.336

Surface	Radius (mm)	Thickness (mm)
1	7.7700	0.5000
2	6.4000	1.5000
3	8.9979	0.8217
4	221.8437	0.8383
5	–	0.8190
6	–	0.2202
7	–	1.4807
8	–	1.5000
9	–	16.2700
10	−11	0.00

Surface	Radius (mm)	Thickness (mm)
1	7.7700	0.5000
2	6.4000	0.5500
3	5.0755	0.8176
4	4.4836	1.7924
5	–	0.9468
6	–	1.3109
7	–	0.5556
8	–	1.5656
9	–	0.5879
10	–	16.2700
11	−11.000	0.00

Polynomial	Surface 5	Surface 8
$x^{1} y^{0}$	0.1053	−0.0758
$x^{2} y^{0}$	0.0356	−0.0382
$x^{0} y^{2}$	0.0213	−0.0572
$x^{3} y^{0}$	−0.0006	−0.0006
$x^{1} y^{2}$	−0.0009	−0.0012
$x^{4} y^{0}$	$- 6.7587 e - 005$	0.0003
$x^{2} y^{2}$	−0.0003	0.0007
$x^{0} y^{4}$	−0.0004	0.0001
$x^{5} y^{0}$	$2.9753 e - 005$	$4.1932 e - 005$
$x^{3} y^{2}$	$7.1795 e - 005$	0.0001
$x^{1} y^{4}$	$5.4922 e - 005$	0.0001
$x^{6} y^{0}$	$4.2498 e - 006$	$- 1.2215 e - 005$
$x^{4} y^{2}$	$9.3396 e - 006$	$- 4.2773 e - 005$
$x^{2} y^{4}$	$7.5264 e - 006$	$- 4.6747 e - 005$
$x^{0} y^{6}$	$- 2.2669 e - 006$	$- 1.9299 e - 005$

	$α = 5 °$		$α = 0 °$
	Anterior Element of Alvarez Lens	Posterior Element of Alvarez Lens	Anterior Element of Alvarez Lens	Posterior Element of Alvarez Lens
$β_{Y}$	$- 3 ° \sim + 1.1 °$	$- 1 ° \sim + 2 °$	$- 5 ° \sim + 4.4 °$	$- 1 ° \sim + 2 °$
$β_{X}$	$\pm 3.5 °$	$\pm 1.3 °$	$\pm 4.2 °$	$\pm 1 °$
$Δ y$	$\pm 29 μm$	$\pm 30 μm$	$\pm 11 μm$	$\pm 12 μm$

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Applied Optics