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Innovative IOL accommodative technologies: NuLens and TekClear
Author(s) -
ALIO SANZ JL,
BENNUN J
Publication year - 2008
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2008.6145.x
Subject(s) - dioptre , accommodation , optometry , intraocular lens , medicine , ophthalmology , visual acuity , optics , physics
Purpose To develop intraocular lenses capable of changing the power of the lens or the power of the eye related to active ciliary body function. Methods Clinical pilot study on a consecutive series of patients implanted with the Nulens accommodative IOL (NuLens Ltd) and TekClear positional pseudoaccommodative IOL (Tekia Inc). Follow up was 3‐6 months. The tenets for the Helsinki declaration were followed in this investigation. Main outcome measures were improvement in near vision with distance correction and without near vision add, near vision add to reach best spectacle corrected vision for near, biometrical study of the IOL changes inside the eye at the postoperative. Results The Nulens demonstrated a mean clinical accommodation of 8‐10 diopters. TekClear demonstrated a mean near vision improvement of 1.25 diopters. Some variability was observed with both lenses. Biometrical investigation of both lenses when implanted inside the eye demonstrated a potential for accommodation of up to 17 diopters for the Nulens and up to 2.5 diopters for the TekClear. Conclusion Real accommodation restoration up to 8 diopters is feasible with the Nulens IOL and a near vision gain of 1‐2 diopters is possible with the TekClear IOL. In both cases, active ciliary body action was correlated with the near vision improvement observed in the patients.Commercial interest