April 2011
Volume 52, Issue 14
ARVO Annual Meeting Abstract  |   April 2011
The Iol-k Implant For Central Low Vision. A Pilot Study
Author Affiliations & Notes
  • Chiara O. Pierrottet
    Ophthalmology, San Paolo Hospital, Milan, Italy
    Retinitis Onlus, Milan, Italy
  • Gaetano Savaresi
    Retinitis Onlus, Milan, Italy
  • Paolo Ferri
    Ophthalmology, San Paolo Hospital, Milan, Italy
  • Luca Rossetti
    Ophthalmology, San Paolo Hospital, Milan, Italy
  • Nicola Orzalesi
    Ophthalmology, San Paolo Hospital, Milan, Italy
  • Footnotes
    Commercial Relationships  Chiara O. Pierrottet, None; Gaetano Savaresi, None; Paolo Ferri, None; Luca Rossetti, None; Nicola Orzalesi, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science April 2011, Vol.52, 392. doi:
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      Chiara O. Pierrottet, Gaetano Savaresi, Paolo Ferri, Luca Rossetti, Nicola Orzalesi; The Iol-k Implant For Central Low Vision. A Pilot Study. Invest. Ophthalmol. Vis. Sci. 2011;52(14):392.

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose: : To evaluate the efficacy of the IOL-Kiara® system, a mixed intra/extra ocular Galilean telescope, to improve vision of patients with severe low vision due to macular degeneration.

Methods: : 4 patients (age range 72-78 years) with senile cataract and atrophic age related macular degeneration underwent phacoemulsification and implant of IOL-K®, an acrylic foldable IOL with a central negative (-26 diopters) 2 mm in diameter portion. The negative IOL represents the ocular of a Galilean telescope, whereas the objective is a positive lens set on a special pair of glasses. Such a Galilean system gives 2,7x magnification for distance.

Results: : After surgery three patients showed visual acuity improvement (ETDRS charts mean preop visual acuity 1,7 logMAR, postop 1,3 logMAR). Further improvement was gained when completing the Galilean telescope by adding the glasses positive lens correction (mean visual acuity: 0,78 logMAR). The fourth patient remained stable.

Conclusions: : This pilot study shows that IOL-Kiara® system can improve visual acuity in severe low vision due to macular conditions. In order to avoid discomfort due to the high magnifying effect of the complete system, patients should use the positive correction of glasses only for motionless activities (watching TV, reading, meals, etc). This system is a valid alternative for patients for whom the lesser magnification (1,3x) of the IOL-Vip implant (Ophthalmology 114: 860-865, 2007) is not sufficient for a satisfactory visual improvement and/or patients with ocular condition contraindicating the anterior chamber implant of the IOL-Vip system (low endothelial cell count, shallow anterior chamber, glaucoma).

Keywords: age-related macular degeneration • low vision 

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