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Application of 3-dimensional printing technology to construct an eye model for fundus viewing study.

Xie P, Hu Z, Zhang X, Li X, Gao Z, Yuan D, Liu Q - PLoS ONE (2014)

Bottom Line: Optical performance of our schematic model eye was compared with Navarro's schematic eye and other two reported physical model eyes using the ZEMAX optical design software.In on-axis calculations, our schematic model eye possessed similar size of spot diagram compared with Navarro's and Bakaraju's model eye, much smaller than Arianpour's model eye.The schematic eye model we designed can well simulate the optical performance of the human eye, and the fabricated physical one can be used as a tool in fundus range viewing research.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P.R. China.

ABSTRACT

Objective: To construct a life-sized eye model using the three-dimensional (3D) printing technology for fundus viewing study of the viewing system.

Methods: We devised our schematic model eye based on Navarro's eye and redesigned some parameters because of the change of the corneal material and the implantation of intraocular lenses (IOLs). Optical performance of our schematic model eye was compared with Navarro's schematic eye and other two reported physical model eyes using the ZEMAX optical design software. With computer aided design (CAD) software, we designed the 3D digital model of the main structure of the physical model eye, which was used for three-dimensional (3D) printing. Together with the main printed structure, polymethyl methacrylate(PMMA) aspherical cornea, variable iris, and IOLs were assembled to a physical eye model. Angle scale bars were glued from posterior to periphery of the retina. Then we fabricated other three physical models with different states of ammetropia. Optical parameters of these physical eye models were measured to verify the 3D printing accuracy.

Results: In on-axis calculations, our schematic model eye possessed similar size of spot diagram compared with Navarro's and Bakaraju's model eye, much smaller than Arianpour's model eye. Moreover, the spherical aberration of our schematic eye was much less than other three model eyes. While in off- axis simulation, it possessed a bit higher coma and similar astigmatism, field curvature and distortion. The MTF curves showed that all the model eyes diminished in resolution with increasing field of view, and the diminished tendency of resolution of our physical eye model was similar to the Navarro's eye. The measured parameters of our eye models with different status of ametropia were in line with the theoretical value.

Conclusions: The schematic eye model we designed can well simulate the optical performance of the human eye, and the fabricated physical one can be used as a tool in fundus range viewing research.

No MeSH data available.


Related in: MedlinePlus

Fabrication and use of the physical eye model.A: Schematic view of the cross-section of our physical model eye; B: two printed parts provided main structure of the physical model eye; C: use of the physical eye model for assessing the fundus range of the viewing system; D–F: pictures of the angle bars photographed under 128D lens, 60D lens, and 60D lens with model eye tilt; G–I: other three eye models printed and fabricated with different anterior chamber and total axial length.
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pone-0109373-g007: Fabrication and use of the physical eye model.A: Schematic view of the cross-section of our physical model eye; B: two printed parts provided main structure of the physical model eye; C: use of the physical eye model for assessing the fundus range of the viewing system; D–F: pictures of the angle bars photographed under 128D lens, 60D lens, and 60D lens with model eye tilt; G–I: other three eye models printed and fabricated with different anterior chamber and total axial length.

Mentions: In our physical eye model the 128D lens provided an approximate 70° (Figure 7D) while the 60D lens provided an approximate 40°fundus range (Figure 7E).The bars under 60D lens seemed clearer than that under 128D lens. We also founded that the fundus range could extend to 79° when the physical model eye was tilted to 40° (Figure 7F). Other three physical eye models with different refractive statues were successfully printed and fabricated (Figure 7G–7I).


Application of 3-dimensional printing technology to construct an eye model for fundus viewing study.

Xie P, Hu Z, Zhang X, Li X, Gao Z, Yuan D, Liu Q - PLoS ONE (2014)

Fabrication and use of the physical eye model.A: Schematic view of the cross-section of our physical model eye; B: two printed parts provided main structure of the physical model eye; C: use of the physical eye model for assessing the fundus range of the viewing system; D–F: pictures of the angle bars photographed under 128D lens, 60D lens, and 60D lens with model eye tilt; G–I: other three eye models printed and fabricated with different anterior chamber and total axial length.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4230932&req=5

pone-0109373-g007: Fabrication and use of the physical eye model.A: Schematic view of the cross-section of our physical model eye; B: two printed parts provided main structure of the physical model eye; C: use of the physical eye model for assessing the fundus range of the viewing system; D–F: pictures of the angle bars photographed under 128D lens, 60D lens, and 60D lens with model eye tilt; G–I: other three eye models printed and fabricated with different anterior chamber and total axial length.
Mentions: In our physical eye model the 128D lens provided an approximate 70° (Figure 7D) while the 60D lens provided an approximate 40°fundus range (Figure 7E).The bars under 60D lens seemed clearer than that under 128D lens. We also founded that the fundus range could extend to 79° when the physical model eye was tilted to 40° (Figure 7F). Other three physical eye models with different refractive statues were successfully printed and fabricated (Figure 7G–7I).

Bottom Line: Optical performance of our schematic model eye was compared with Navarro's schematic eye and other two reported physical model eyes using the ZEMAX optical design software.In on-axis calculations, our schematic model eye possessed similar size of spot diagram compared with Navarro's and Bakaraju's model eye, much smaller than Arianpour's model eye.The schematic eye model we designed can well simulate the optical performance of the human eye, and the fabricated physical one can be used as a tool in fundus range viewing research.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P.R. China.

ABSTRACT

Objective: To construct a life-sized eye model using the three-dimensional (3D) printing technology for fundus viewing study of the viewing system.

Methods: We devised our schematic model eye based on Navarro's eye and redesigned some parameters because of the change of the corneal material and the implantation of intraocular lenses (IOLs). Optical performance of our schematic model eye was compared with Navarro's schematic eye and other two reported physical model eyes using the ZEMAX optical design software. With computer aided design (CAD) software, we designed the 3D digital model of the main structure of the physical model eye, which was used for three-dimensional (3D) printing. Together with the main printed structure, polymethyl methacrylate(PMMA) aspherical cornea, variable iris, and IOLs were assembled to a physical eye model. Angle scale bars were glued from posterior to periphery of the retina. Then we fabricated other three physical models with different states of ammetropia. Optical parameters of these physical eye models were measured to verify the 3D printing accuracy.

Results: In on-axis calculations, our schematic model eye possessed similar size of spot diagram compared with Navarro's and Bakaraju's model eye, much smaller than Arianpour's model eye. Moreover, the spherical aberration of our schematic eye was much less than other three model eyes. While in off- axis simulation, it possessed a bit higher coma and similar astigmatism, field curvature and distortion. The MTF curves showed that all the model eyes diminished in resolution with increasing field of view, and the diminished tendency of resolution of our physical eye model was similar to the Navarro's eye. The measured parameters of our eye models with different status of ametropia were in line with the theoretical value.

Conclusions: The schematic eye model we designed can well simulate the optical performance of the human eye, and the fabricated physical one can be used as a tool in fundus range viewing research.

No MeSH data available.


Related in: MedlinePlus