Skip to main content

Advertisement

SpringerLink
Log in

Modulation transfer function of intraocular collamer lens with a central artificial hole

  • Refractive Surgery
  • Published:
Graefe's Archive for Clinical and Experimental Ophthalmology Aims and scope Submit manuscript

Abstract

Background

A modified implantable collamer lens (ICL) with a central hole (diameter 0.36 mm), “Hole-ICL”, was created to improve aqueous humour circulation. The aim of this study is to investigate the effects of ICL power and the relationship between pupil size and modulation–transfer functions (MTFs) in a Hole-ICL in vitro.

Methods

The ICL and intraocular lens (IOL) studied were the Collamer ICL (Model ICM, STAAR Surginal) and the monofocal IOL AF-1 (VA-60BBR, HOYA). The ICLs' powers were −20.0 diopters (D), −10.0 D, −5.0 D, +3.0 D, and +10.0 D. A modified ICL with a central hole (diameter 0.36 mm), “Hole-ICL”, was created. The monofocal IOL, which was used as an artificial crystalline lens, was +30.0 D in power, and it was 13.0 mm in length with an optic diameter of 6.0 mm. The line-spread function (LSF) was recorded with the OPAL Vector System (Image Science Ltd.), and a model eye (Menicon Co.) was used that consisted of a wet cell. A conventional ICL or Hole-ICL was placed in the posterior chamber of the model eye. The MTF was calculated from the LSF using fast Fourier transform techniques. Furthermore, we investigated the relationship between pupil size and the MTF of the ICL for −5.0 D. The sizes of the effective aperture were 2.0, 3.0, 4.0, and 5.0 mm.

Results

The in-focus contrasts of the conventional ICL at 100 cyc/mm for a 3.0-mm effective aperture were 37%, 40%, 39%, 38%, and 39% for −20.0 D, −10.0 D, −5.0 D, +3.0 D, and +10.0 D respectively. The in-focus contrasts of the Hole-ICL at 100 cyc/mm for a 3.0-mm effective aperture were 37%, 40%, 39%, 38%, and 38% for −20.0 D, −10.0 D, −5.0 D, +3.0 D, and +10.0 D respectively. The results for a 2.0-mm effective diameter showed that the in-focus MTF in the Hole-ICL was lower than in the conventional ICL, although the difference was small.

Conclusion

These results suggest that differences in MTF between the Hole-ICL and the conventional ICL for various ICL powers and effective pupil diameters were small and clinically negligible.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2

Similar content being viewed by others

References

  1. Chen LJ, Chang YJ, Kuo JC, Rajagopal R, Azar DT (2008) Metaanalysis of cataract development after phakic intraocular lens surgery. J Cataract Refract Surg 34:1181–1200, doi:10.1016/j.jcrs.2008.03.029

    Article  PubMed  Google Scholar 

  2. Lovisolo CF, Reinstein DZ (2005) Phakic intraocular lenses. Surv Ophthalmol 50:549–587, doi:10.1016/j.survophthal.2005.08.011

    Article  PubMed  Google Scholar 

  3. Jimenez-Alfaro I, Benitez del Castillo JM, Garcia-Feijoo J, Gil de Bernabe JG, Serrano de La Iglesia JM (2001) Safety of posterior chamber phakic intraocular lenses for the correction of high myopia: anterior segment changes after posterior chamber phakic intraocular lens implantation. Ophthalmology 108:90–99

    Article  PubMed  CAS  Google Scholar 

  4. Lackner B, Pieh S, Schmidinger G, Hanselmayer G, Dejaco-Ruhswurm I, Funovics MA, Skorpik C (2003) Outcome after treatment of ametropia with implantable contact lenses. Ophthalmology 110:2153–2161, doi:10.1016/S0161-6420(03)00830-3

    Article  PubMed  Google Scholar 

  5. Fujisawa K, Shimizu K, Uga S, Suzuki M, Nagano K, Murakami Y, Goseki H (2007) Changes in the crystalline lens resulting from insertion of a phakic IOL (ICL) into the porcine eye. Graefes Arch Clin Exp Ophthalmol 245:114–122, doi:10.1007/s00417-006-0338-y

    Article  PubMed  Google Scholar 

  6. Ohmoto F, Shimizu K, Uozato H, Kawamorita T, Uga S (2010) Optical performances of implantable collamer lenses with and without a central perforation. Kitasato Medical Journal 40:150–153, doi:10.1007/s00417-007-0759-2

    Google Scholar 

  7. Lang AJ, Lakshminarayanan V, Portney V (1993) Phenomenological model for interpreting the clinical significance of the in vitro optical transfer function. J Opt Soc Am A 10:1600–1610

    Article  PubMed  CAS  Google Scholar 

  8. Kawamorita T, Uozato H, Aizawa D, Kamiya K, Shimizu K (2009) Optical performance in rezoom and array multifocal intraocular lenses in vitro. J Refract Surg 25:467–469

    Article  PubMed  Google Scholar 

  9. Rawer R, Stork W, Spraul CW, Lingenfelder C (2005) Imaging quality of intraocular lenses. J Cataract Refract Surg 31:1618–1631, doi:10.1016/j.jcrs.2005.01.033

    Article  PubMed  Google Scholar 

  10. Shiratani T, Shimizu K, Fujisawa K, Uga S, Nagano K, Murakami Y (2008) Crystalline lens changes in porcine eyes with implanted phakic IOL (ICL) with a central hole. Graefes Arch Clin Exp Ophthalmol 246:719–728, doi:10.1007/s00417-007-0759-2

    Article  PubMed  Google Scholar 

  11. Charman WN, Chateau N (2003) The prospects for super-acuity: limits to visual performance after correction of monochromatic ocular aberration. Ophthalmic Physiol Opt 23:479–493

    Article  PubMed  CAS  Google Scholar 

  12. Campbell FW, Green DG (1965) Optical and retinal factors affecting visual resolution. J Physiol 181:576–593

    PubMed  CAS  Google Scholar 

  13. Fechner PU, Haigis W, Wichmann W (1996) Posterior chamber myopia lenses in phakic eyes. J Cataract Refract Surg 22:178–182

    PubMed  CAS  Google Scholar 

  14. Lindland A, Heger H, Kugelberg M, Zetterstrom C (2010) Vaulting of myopic and toric Implantable Collamer Lenses during accommodation measured with Visante optical coherence tomography. Ophthalmology 117:1245–1250, doi:10.1016/j.ophtha.2009.10.033

    Article  PubMed  Google Scholar 

  15. Schmidinger G, Lackner B, Pieh S, Skorpik C (2010) Long-term changes in posterior chamber phakic intraocular collamer lens vaulting in myopic patients. Ophthalmology 117:1506–1511, doi:S0161-6420(09)01417-1

    Article  PubMed  Google Scholar 

  16. Alfonso JF, Lisa C, Abdelhamid A, Fernandes P, Jorge J, Montes-Mico R (2010) Three-year follow-up of subjective vault following myopic implantable collamer lens implantation. Graefes Arch Clin Exp Ophthalmol 248:1827–1835, doi:10.1007/s00417-010-1322-0

    Article  PubMed  Google Scholar 

  17. Khalifa YM, Moshirfar M, Mifflin MD, Kamae K, Mamalis N, Werner L (2010) Cataract development associated with collagen copolymer posterior chamber phakic intraocular lenses: clinicopathological correlation. J Cataract Refract Surg 36:1768–1774, doi:10.1016/j.jcrs.2010.04.039

    Article  PubMed  Google Scholar 

  18. Yan PS, Lin HT, Wang QL, Zhang ZP (2010) Anterior segment variations with age and accommodation demonstrated by slit-lamp-adapted optical coherence tomography. Ophthalmology 117(12):2301–2307, doi10.1016/j.ophtha.2010.03.027

    Article  PubMed  Google Scholar 

  19. Alio JL, de la Hoz F, Ruiz-Moreno JM, Salem TF (2000) Cataract surgery in highly myopic eyes corrected by phakic anterior chamber angle-supported lenses(1). J Cataract Refract Surg 26:1303–1311

    Article  PubMed  CAS  Google Scholar 

  20. Sanders DR, Vukich JA (2002) Incidence of lens opacities and clinically significant cataracts with the implantable contact lens: comparison of two lens designs. J Refract Surg 18:673–682

    PubMed  Google Scholar 

Download references

Acknowledgement

The authors thank American Journal Experts for their critical reading of the manuscript.

Author information

Authors and Affiliations

  1. Department of Orthoptics and Visual Science, Kitasato University School of Allied Health Sciences, 1-15-1 Kitasato, Minami, Sagamihara, 252-0373, Japan

    Hiroshi Uozato & Takushi Kawamorita

  2. Department of Ophthalmology and Visual Science, Kitasato University Graduate School of Medical Sciences, Sagamihara, Japan

    Hiroshi Uozato, Kimiya Shimizu, Takushi Kawamorita & Fumiko Ohmoto

  3. Department of Ophthalmology, Kitasato University School of Medicine, Sagamihara, Japan

    Kimiya Shimizu & Fumiko Ohmoto

Authors
  1. Hiroshi Uozato
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kimiya Shimizu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Takushi Kawamorita
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Fumiko Ohmoto
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hiroshi Uozato.

Additional information

Disclosure

H. Uozato, None; K. Shimizu, None; T. Kawamorita, None; F. Ohmoto

The authors indicate no funding / support, financial disclosures, or financial conflict of interest.

Electronic supplementary materials

Below is the link to the electronic supplementary material.

ESM 1

(TIF 83.3 MB)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Uozato, H., Shimizu, K., Kawamorita, T. et al. Modulation transfer function of intraocular collamer lens with a central artificial hole. Graefes Arch Clin Exp Ophthalmol 249, 1081–1085 (2011). https://doi.org/10.1007/s00417-010-1602-8

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00417-010-1602-8

Keywords

Search

Navigation