Triplet design as an intraocular lens for high myopia

C. González; L. Carretero; I. Pascual; A. Fimia

doi:10.1364/AO.34.002898

Applied Optics
Vol. 34,
Issue 16,
pp. 2898-2907
(1995)
•https://doi.org/10.1364/AO.34.002898

Triplet design as an intraocular lens for high myopia

C. González, L. Carretero, I. Pascual, and A. Fimia

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C. González, L. Carretero, I. Pascual, and A. Fimia, "Triplet design as an intraocular lens for high myopia," Appl. Opt. 34, 2898-2907 (1995)

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Abstract

We present the possibility of using a triplet as an intraocular lens (IOL). The matrix method was used to calculate the power of this triplet for high myopia. The thickness of the lens, the distances between the edges of the IOL and the endothelium, the distances between the edges of the IOL and the iris, and the influence of axial displacement have been analyzed. We have also compared the size, the thickness, the power, the distances between the edges of the IOL and the endothelium, and the distances between the edges of the IOL and the iris to the typical concave-plane lens that is usually implanted in highly myopic eyes. As we can see, when the anterior chamber depth is normal, our triplet presents a better geometrical form than the concave-plane lens.

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Total Corneal Power (D)	Axial Length (mm)

	27	30	33
42	−6.93	−13.39	−18.53
44	−9.20	−15.51	−20.64
46	−11.49	−17.72	−22.77
48	−13.72	−20.11	−25.23

Power (D)	Edge Thickness (mm)			Total Edge Thickness (mm)	Central Thickness (mm)			Total Central Thickness (mm)

	Anterior	Middle	Posterior		Anterior	Middle	Posterior
−6.93	0.126	0.095	0.146	0.367	0.200	0.250	0.175	0.625
−13.39	0.127	0.027	0.138	0.292	0.150	0.250	0.150	0.550
−18.53	0.125	0.024	0.143	0.292	0.125	0.300	0.125	0.550
−9.20	0.130	0.055	0.135	0.320	0.200	0.250	0.175	0.625
−15.51	0.128	0.038	0.130	0.295	0.150	0.300	0.150	0.600
−20.64	0.129	0.034	0.132	0.295	0.125	0.350	0.125	0.600
−11.49	0.129	0.015	0.128	0.272	0.200	0.250	0.175	0.625
−17.72	0.131	0.049	0.142	0.322	0.175	0.350	0.150	0.675
−22.77	0.124	0.043	0.130	0.297	0.125	0.400	0.125	0.650
−13.72	0.130	0.025	0.141	0.296	0.225	0.300	0.175	0.700
−20.11	0.133	0.008	0.130	0.271	0.200	0.350	0.125	0.675
−25.23	0.139	0.003	0.154	0.296	0.175	0.400	0.125	0.700

Total Corneal Power (D)	Peripheral ACD (mm)
42	2.457
44	2.426
46	2.394
48	2.375

Total Corneal Power (D)	Axial Length (mm)	Triplet Lens			Concave-Plane Lens

		%	I-E^a (mm)	C-E^b (m)	%	I-E^a (m)	C-E^b (m)
42	27	15	0.761	1.329	14	1.463	0.655
	30	12	0.799	1.367	22	1.463	0.456
	33	12	0.799	1.367	29	1.463	0.288
44	27	13	0.761	1.344	17	1.463	0.554
	30	12	0.774	1.357	25	1.463	0.352
	33	12	0.774	1.357	32	1.463	0.179
46	27	11	0.761	1.361	20	1.463	0.451
	30	13	0.736	1.336	29	1.463	0.245
	33	12	0.749	1.348	36	1.463	0.067
48	27	13	0.724	1.355	23	1.463	0.360
	30	11	0.736	1.368	32	1.463	0.149
	33	13	0.724	1.355	40	1.463	−0.036

Total Corneal Power (D)	Axial Length (mm)	Radii (mm)	Power (D)	Total Edge Thickness (mm)	Total Central Thickness (mm)
42	27	−21.05	−7.25	0.340	0.125
	30	−11.09	−13.76	0.539	0.125
	33	−8.02	−19.02	0.707	0.125
	27	−15.99	−9.54	0.409	0.125
44	30	−9.50	−16.06	0.611	0.125
	33	−7.16	−21.32	0.784	0.125
	27	−12.87	−11.86	0.480	0.125
46	30	−8.31	−18.37	0.686	0.125
	33	−6.46	−23.63	0.864	0.125
	27	−10.76	−14.18	0.552	0.125
48	30	−7.37	−20.70	0.763	0.125
	33	−5.88	−25.96	0.948	0.125

Abstract

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Applied Optics