A Dual-Area Aspheric Diffractive Intraocular Lens for Large Corneal Asphericity Variation

Jianda Gu; Yongji Liu; Yayan Bian; Baokai Liu; Hao Yu

doi:10.3788/AOS202040.1022001

Acta Optica Sinica, Volume. 40, Issue 10, 1022001(2020)

A Dual-Area Aspheric Diffractive Intraocular Lens for Large Corneal Asphericity Variation

Jianda Gu^1,2, Yongji Liu^1,2、*, Yayan Bian^1,2, Baokai Liu^1,2, and Hao Yu^1,2

¹Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China

²Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Tianjin 300350, China

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Figures & Tables(12)

$Cross-section profile of the effective optical zone of the dual-area aspheric diffractive IOL$

Fig. 1. Cross-section profile of the effective optical zone of the dual-area aspheric diffractive IOL

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Fig. 2. MTF of human eyes with the proposed IOL under a 2.5 mm pupil at wavelength of 555 nm. (a) 0° FOV; (b) 4° FOV

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Fig. 3. MTF of human eyes with the proposed IOL in polychromatic light at nine object locations in photonic vision condition. (a) 0° FOV; (b) 4° FOV

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Fig. 4. MTF of human eyes with the prposed IOL with different corneal aspherical coefficients as a function of the object distance in the bright vision and 0° FOV. (a) Q=-0.44; (b) Q=0.02; (c) Q=-0.70; (d) Q=0.60

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Fig. 5. MTF of the human eyes with the proposed IOL at 50 cycles·mm^-1 for 0° FOV as a function of the pupil diameter at nine object distances

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Table 1. Structural parameters of the aphakia model

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Table 1. Structural parameters of the aphakia model

Component	Radius /mm	Conic	Thickness /mm	Refractive index	Abbe number
Anterior cornea	7.8	-0.21	0.5	1.376	50.2
Posterior cornea	6.6	0	3.5	1.336	50.2
Pupil	Infinity	0	0	1.336	50.2
Anterior IOL	-	-	-	1.494	57.5
Posterior IOL	-	-	-	1.336	50.2
Retina	-12.5	-	-	-	-

Table 2. Parameters of the anterior surface of intraocular lens
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Table 2. Parameters of the anterior surface of intraocular lens
Zone α₂ α₄ α₆ α₈ α₁₀
Inner zone (r≤1.5 mm) 0.22346 0.03220 0.15373 -0.17209 0.01857
Outer zone (1.5 mm<r<3.0 mm) 3.06507 2.92466 -65.75065 213.58046 -201.15646

Table 3. Parameters of the posterior surface of intraocular lens
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Table 3. Parameters of the posterior surface of intraocular lens
Zone α₂ α₄ α₆ α₈ α₁₀
Inner zone (r≤1.5 mm) 0.18195 -0.02084 0.30258 -0.35517 0.14948
Outer zone (1.5 mm<r<3.0 mm) -3.35135 33.36130 -127.86373 268.44985 -215.58112

Table 4. Diffraction phase coefficients of the inner zone (r≤1.5 mm) of the anterior surface of intraocular lens
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Table 4. Diffraction phase coefficients of the inner zone (r≤1.5 mm) of the anterior surface of intraocular lens
β₁₁ β₁₂ β₁₃ β₁₄ β₁₅
5.97340 -151.39364 487.98294 -642.15233 271.37588

Table 5. Statistical results of MTF after the Monte Carlo sampling analysis at spatial frequency of 50 cycles·mm^-1

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Table 5. Statistical results of MTF after the Monte Carlo sampling analysis at spatial frequency of 50 cycles·mm^-1

Sampling ratio	L=0.75 m	L=1.00 m	L=1.20 m	L=1.50 m	L=2.00 m	L=3.00 m	L=4.00 m	L=5.00 m	L=6.00 m
90%	0.3454	0.6158	0.4286	0.2976	0.3360	0.4903	0.5166	0.5245	0.5285
50%	0.4766	0.6903	0.5727	0.3733	0.4208	0.5515	0.5736	0.5687	0.5671
10%	0.5973	0.7139	0.6646	0.4766	0.5151	0.5856	0.5834	0.5781	0.5739

Table 6. Statistical results of MTF after the Monte Carlo sampling analysis when considering machining tolerances (spatial frequency of 25 cycles·mm^-1)

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Table 6. Statistical results of MTF after the Monte Carlo sampling analysis when considering machining tolerances (spatial frequency of 25 cycles·mm^-1)

Sampling ratio	L=0.75 m	L=1.00 m	L=1.20 m	L=1.50 m	L=2.00 m	L=3.00 m	L=4.00 m	L=5.00 m	L=6.00 m
90%	0.6895	0.7727	0.6729	0.5219	0.5925	0.6172	0.6078	0.6008	0.5890
50%	0.7619	0.8229	0.7389	0.5610	0.6172	0.6354	0.6284	0.6199	0.6147
10%	0.8205	0.8573	0.8071	0.5929	0.6340	0.6461	0.6446	0.6392	0.6344

Table 7. Statistical results of MTF after the Monte Carlo sampling analysis when considering assembly tolerances (spatial frequency of 25 cycles·mm^-1)

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Table 7. Statistical results of MTF after the Monte Carlo sampling analysis when considering assembly tolerances (spatial frequency of 25 cycles·mm^-1)

Sampling ratio	L=0.75 m	L=1.00 m	L=1.20 m	L=1.50 m	L=2.00 m	L=3.00 m	L=4.00 m	L=5.00 m	L=6.00 m
90%	0.6198	0.7486	0.6180	0.4189	0.5198	0.5805	0.5887	0.5856	0.5798
50%	0.7306	0.7882	0.7369	0.5211	0.5881	0.6292	0.6370	0.6332	0.6304
10%	0.8102	0.8439	0.8072	0.6086	0.6554	0.6818	0.6830	0.6804	0.6788

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Jianda Gu, Yongji Liu, Yayan Bian, Baokai Liu, Hao Yu. A Dual-Area Aspheric Diffractive Intraocular Lens for Large Corneal Asphericity Variation[J]. Acta Optica Sinica, 2020, 40(10): 1022001

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Paper Information

Category: Optical Design and Fabrication

Received: Dec. 12, 2019

Accepted: Mar. 9, 2020

Published Online: Apr. 28, 2020

The Author Email: Yongji Liu (yjliu@nankai.edu.cn)

DOI:10.3788/AOS202040.1022001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Structural parameters of the aphakia model

Table 1. Structural parameters of the aphakia model

Table 2. Parameters of the anterior surface of intraocular lens

Table 2. Parameters of the anterior surface of intraocular lens

Table 3. Parameters of the posterior surface of intraocular lens

Table 3. Parameters of the posterior surface of intraocular lens

Table 4. Diffraction phase coefficients of the inner zone (r≤1.5 mm) of the anterior surface of intraocular lens

Table 4. Diffraction phase coefficients of the inner zone (r≤1.5 mm) of the anterior surface of intraocular lens

Table 5. Statistical results of MTF after the Monte Carlo sampling analysis at spatial frequency of 50 cycles·mm-1

Table 5. Statistical results of MTF after the Monte Carlo sampling analysis at spatial frequency of 50 cycles·mm-1

Table 6. Statistical results of MTF after the Monte Carlo sampling analysis when considering machining tolerances (spatial frequency of 25 cycles·mm-1)

Table 6. Statistical results of MTF after the Monte Carlo sampling analysis when considering machining tolerances (spatial frequency of 25 cycles·mm-1)

Table 7. Statistical results of MTF after the Monte Carlo sampling analysis when considering assembly tolerances (spatial frequency of 25 cycles·mm-1)

Table 7. Statistical results of MTF after the Monte Carlo sampling analysis when considering assembly tolerances (spatial frequency of 25 cycles·mm-1)

Table 5. Statistical results of MTF after the Monte Carlo sampling analysis at spatial frequency of 50 cycles·mm^-1

Table 5. Statistical results of MTF after the Monte Carlo sampling analysis at spatial frequency of 50 cycles·mm^-1

Table 6. Statistical results of MTF after the Monte Carlo sampling analysis when considering machining tolerances (spatial frequency of 25 cycles·mm^-1)

Table 6. Statistical results of MTF after the Monte Carlo sampling analysis when considering machining tolerances (spatial frequency of 25 cycles·mm^-1)

Table 7. Statistical results of MTF after the Monte Carlo sampling analysis when considering assembly tolerances (spatial frequency of 25 cycles·mm^-1)

Table 7. Statistical results of MTF after the Monte Carlo sampling analysis when considering assembly tolerances (spatial frequency of 25 cycles·mm^-1)