Spherical Aberration, Contrast Sensitivity and Depth of Focus With Three Aspherical Intraocular Lenses

Hyoung Won Bae; Eung Kweon Kim; Tae-Im Kim

doi:10.3341/jkos.2009.50.11.1639

Journal List > J Korean Ophthalmol Soc > v.50(11) > 1008412

Go to TopGo to Top Go to BottomGo to Bottom

TOOLS

Bae, Kim, and Kim: Spherical Aberration, Contrast Sensitivity and Depth of Focus With Three Aspherical Intraocular Lenses

Original Article

J Korean Ophthalmol Soc 2009;50(11):1639-1644.

Published online: 31 August 2009

DOI: https://doi.org/10.3341/jkos.2009.50.11.1639

Spherical Aberration, Contrast Sensitivity and Depth of Focus With Three Aspherical Intraocular Lenses

Hyoung Won Bae, MD, Eung Kweon Kim, MD, PhD, Tae-Im Kim, MD

Vision Research Institute, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea

Address reprint requests to Tae-Im Kim, MD, Vision Research Institute, Department of Ophthalmology, Yonsei University College of Medicine #134 Sinchon-dong, Seodaemun-gu, Seoul 120-752, Korea Tel: 82-2-2228-3570, Fax: 82-2-312-0541, E-mail: tikim@yuhs.ac

Received 10 February 2009 Accepted 21 July 2009

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

To evaluate postoperative spherical aberration, contrast sensitivity and depth of focus after implanting 3 different aspheric intraocular lenses.

Methods

Fifty-six eyes (18 eyes for Akreos adapt Advanced Optics (AO), 20 eyes for AcrySof IQ SN60WF and 18 eyes for Tecnis Acrylic IOL ZA9003) of 48 patients were evaluated. Internal ocular aberration including spherical aberration and higher-order aberration and contrast sensitivity were evaluated 3 months after lens implantation. In addition, visual acuities at 33 cm and 1 m distance were measured with the far vision corrected state to calculate depth of focus.

Results

The total and internal ocular spherical aberration of the AO implanted group was slightly higher than the other groups with statistical significance. However, there was no statistically significant difference of contrast sensitivity and depth of focus among the 3 groups.

Conclusions

A subtle difference of spherical aberration among the 3 groups without a statistically significant difference in other factors may not induce the differences of contrast sensitivities and depths of focus in each group.

Keywords: Aspheric intraocular lens, Contrast sensitivity, Depth of focus, Spherical aberration

References

1. Werner L, Olson RJ, Mamalis N. New Technology IOL Optics. Ophthalmol Clin North Am. 2006; 19:469–83.

2. Guirao A, Redondo M, Artal P. Optical aberrations of the human cornea as a function of age. J Opt Soc Am A Opt Image Sci Vis. 2000; 17:1697–702.

3. McLellan JS, Marcos S, Burns SA. Age-related changes in mono-chromatic wave aberrations of the human eye. Invest Ophthalmol Vis Sci. 2001; 42:1390–5.

4. Oshika T, Klyce SD, Applegate RA, Howland HC. Changes in corneal wavefront aberrations with aging. Invest Ophthalmol Vis Sci. 1999; 40:1351–5.

5. Artal P, Berrio E, Guirao A, Navarro R. Contribution of the cornea and internal surface to the change of ocular aberrations with age. J Opt Soc Am A Opt Image Sci Vis. 2002; 19:137–43.

6. Artal P, Guirao A, Berrio E, Williams DR. Compensation of corneal aberrations by the internal optics in the human eye. J Vis. 2001; 1:1–8.

7. Rawer R, Stork W, Spraul CW, Lingenfelder C. Imaging quality of intraocular lenses. J Cataract Refract Surg. 2005; 31:1618–31.

8. Chalita MR, Krueger RR. Correlation of aberrations with visual acuity and symptoms. Ophthalmol Clin North Am. 2004; 17:135–42.

9. Guirao A, Redondo M, Geraghty E, et al. Corneal optical aberrations and retinal image quality in patients in whom monofocal intraocular lenses were implanted. Arch Ophthalmol. 2002; 120:1143–51.

10. Holladay JT, Piers PA, Koranyi G, et al. A new intraocular lens design to reduce spherical aberration of pseudophakic eyes. J Refract Surg. 2002; 18:683–91.

11. Rocha KM, Soriano ES, Chamon W, et al. Spherical Aberration and Depth of Focus in Eyes Implanted with Aspheric and Spherical Intraocular Lenses. Ophthalmology. 2007; 114:2050–4.

12. Elder MJ, Murphy C, Sanderson GF. Apparent accommodation and depth of field in pseudophakia. J Cataract Refract Surg. 1996; 22:615–9.

13. Sawusch MR, Guyton DL. Optimal astigmatism to enhance depth of focus after cataract surgery. Ophthalmology. 1991; 98:1025–9.

14. Holladay JT, Piers PA, Koranyi G, et al. A new intraocular lens design to reduce spherical aberration of pseudophakic eyes. J Refract Surg. 2002; 18:683–91.

15. Olson RJ, Werner L, Mamalis N, Cionni R. New intraocular lens technology. Am J Ophthalmol. 2005; 140:709–16.

16. Caporossi A, Martone G, Casprini F, Rapisarda L. Prospective randomized study of clinical performance of 3 aspheric and 2 spherical intraocular lenses in 250 eyes. J Refract Surg. 2007; 23:639–48.

17. Mester U, Dillinger P, Anterist N. Impact of a modified optic design on visual function: clinical comparative study. J Cataract Refract Surg. 2003; 29:652–60.

18. Rocha K, Soriano E, Chalita M, et al. Wavefront Analysis and Contrast Sensitivity of Aspheric and Spherical Intraocular Lenses. Am J Opthalmol. 2006; 142:750–6.

19. Tzelikis P, Akaishi L, Trindade F, Boteon JE. Spherical Aberration and Contrast Sensitivity in Eyes Implanted with Aspheric and Spherical Intraocular Lenses: A Comparative Study. Am J Ophthalmol. 2008; 145:827–33.

20. Ahn H, Kim SW, Kim EK, Kim TI. Wavefront and Visual Function Analysis After Aspherical and Spherical Intraocular Lenses Implan-tation. J Korean Ophthalmol Soc. 2008; 49:1248–55.

21. Kim HS, Kim SW, Ha BJ, et al. Ocular Aberrations and Contrast Sensitivity in Eyes Implanted with Aspheric and Spherical Intraocular Lenses. J Korean Ophthalmol Soc. 2008; 49:1256–62.

22. Franchini A. Compromise between spherical and chromatic aberration and depth of focus in aspheric intraocular lenses. J Cataract Refract Surg. 2007; 33:497–509.

23. Altmann GE, Nichamin LD, Lane SS, Pepose JS. Optical performance of 3 intraocular lens designs in the presence of decentration. J Cataract Refract Surg. 2005; 31:574–85.

24. Holladay JT, Piers PA, Koranyi G, et al. A new intraocular lens design to reduce spherical aberration of pseudophakic eyes. J Refract Surg. 2002; 18:683–91.

25. Wang L, Dai E, Koch DD, Nathoo A. Optical aberrations of the human anterior cornea. J Cataract Refract Surg. 2003; 29:1514–21.

26. Beiko GH, Haigis W, Steinmueller A. Distribution of corneal spherical aberration in a comprehensive ophthalmology practice and whether keratometry can predict aberration values. J Cataract Refract Surg. 2007; 33:848–58.

27. Levy Y, Segal O, Avni I, Zadok D. Ocular higher-order aberrations in eyes with supernormal vision. Am J Ophthalmol. 2005; 139:225–8.

28. Tzelikis P, Akaishi L, Trindade F, Boteon J. Ocular aberrations and contrast sensitivity after cataract surgery with AcrySof IQ intraocular lens implantation. J Cataract Refract Surg. 2007; 33:1918–24.

29. Awwad ST, Lehmann JD, McCulley JP, Bowman RW. A comparison of higher order aberrations in eyes implanted with AcrySof IQ SN60WF and AcrySof SN60AT intraocular lenses. Eur J Ophthalmol. 2007; 17:320–6.

30. Johansson B, Sundelin S, Wikberg-Matsson A, et al. Visual and optical performance of the Akreos Adapt Advanced Optics and Tecnis Z9000 intraocular lenses: Swedish multicenter study. J Cataract Refract Surg. 2007; 33:1565–72.

31. Dietze HH, Cox MJ. Limitations of correcting spherical aberration with aspheric intraocular lenses. J Refract Surg. 2005; 21:S541–6.

32. Lee DY, Roh JH, Shyn KH. 2005 survey for KSCRS members. J Korean Ophthalmol Soc. 2007; 48:485–92.

Figure 1.

Contrast sensitivity test of three groups at photopic condition (A) and mesopic condition (B). There was no statistically significant difference among three groups.

Table 1.

Optical characteristics of the aspherical IOLs^* used in the study

Charateristics	Akreos adapt AO	AcrySof IQ SN60WF	Tecnis ZA9003
Optic type	Monofocal	Monofocal	Monofocal
Lens	1-piece	1-piece	3-piece
Optical material	Hydrophilic acrylic	Hydrophobic acrylic	Hydrophobic acrylic
Refractive index	1.458	1.55	1.47
Optic size (mm)	6	6	6
Overall length (mm)	10.5∼11.0	13	13
Design	Prolate anterior and posterior surfaces	Prolate posterior surface	Prolate anterior surface
Haptic angulation	0	0	5
Haptic material	Hydrophilic acrylic	Hydrophobic acrylic	PMMA^† monofilament
Sph A^‡ (μm)	0	−0.20	−0.27

^*IOLs=intraocular lens

^†PMMA=polymethylmethacrylate

^‡Sph A=spherical aberration.

Table 2.

Demographics of study groups

	Akreos adapt AO	AcrySof IQ SN60WF	Tecnis ZA9003	p-value
No^* of eyes (%)	18	20	18
OD:OS	9:9	10:10	9:9
Gender (M:F)	6:12	10:10	10:8
Mean Age (± SD^†)	62.29 (±8.89)	64.21 (±8.85)	64.92 (±13.43)	0.789
BCVA^‡ (± SD)	−0.02 (±0.12)	0.04 (±0.06)	0.03 (±0.05)	0.195

All values are displayed as logMAR visual acuity.

^*No=number

^†SD=standard deviation

^‡BCVA=best corrected visual acuity.

Table 3.

Total ocular aberrations (μm) of three groups measured by iTrace^® (Mean± Standard deviation)

IOL groups	RMS^* total	HO A^†	Sph A^‡	Coma 7A	Coma 8A	Trefoil 6A	Trefoil 9A
AO	1.46±0.38	0.80±0.33	0.26±0.20	−0.09±0.24	0.12±0.31	0.12±0.29	−0.04±0.28
IQ	1.46±0.64	0.63±0.26	0.00±0.14	0.07±0.23	0.06±0.26	0.12±0.40	−0.07±0.25
Tecnis	1.09±0.39	0.56±0.21	−0.01±0.13	−0.01±0.23	−0.02±0.23	−0.09±0.29	0.07±0.21
p-value	0.107	0.071	0.000^§	0.143	0.385	0.198	0.351

^*RMS=root mean square

^†HO A=higher-order aberration

^‡Sph A=spherical aberration

^§Statistically significant (p<0.05).

Table 4.

Internal aberrations (μm) of three groups measured by iTrace^® (Mean± Standard deviation)

IOL groups	RMS^* total	HO A^†	Sph A^‡	Coma 7A	Coma 8A	Trefoil 6A	Trefoil 9A
AO	1.54±0.69	0.90±0.44	−0.02±0.17	−0.14±0.34	0.13±0.27	0.20±0.36	−0.28±0.31
IQ	1.69±0.70	0.80±0.40	−0.22±0.16	0.06±0.28	0.05±0.22	0.16±0.44	−0.08±0.27
Tecnis	1.44±0.70	0.60±0.24	−0.28±0.10	−0.09±0.19	0.01±0.27	0.10±0.33	−0.02±0.25
p-value	0.605	0.134	0.000^§	0.116	0.455	0.810	0.072

^*RMS=root mean square

^†HO A=higher-order aberration

^‡Sph A=spherical aberration

^§Statistically significant (p<0.05).

Table 5.

Visual acuities and depth of focus (Mean± Standard deviation)

	AO	IQ	Tecnis	p-value
Far^*	−0.02±0.12	0.04±0.06	0.03±0.05	0.195
Intermediate^†	0.26±0.17	0.26±0.15	0.31±0.12	0.681
Near^†	0.55±0.29	0.53±0.13	0.56±0.22	0.936
Depth of focus^‡	0.40±0.21	0.39±0.09	0.43±0.15	0.812

All values are displayed as logMAR visual acuity.

^*Best corrected visual acuity

^†Distance-corrected visual acuity

^‡Mean of intermediate visual acuity and near visual acuity.

TOOLS

Similar articles