Purchase this article with an account.
T. Nakamura, Y. Kiuchi, K. Fukui, J. Harada, M. Fujimoto; Improving Contrast Sensitivity With the Acryl–Foldable Yellow Intraocular Lens . Invest. Ophthalmol. Vis. Sci. 2006;47(13):302.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
Patients with cataract surgery often complain of photophobia and chromatopsia. Yellow–tinted intraocular lenses (IOL) were designed to satisfy this complaint. Recently foldable yellow–tinted IOL (HOYA, Co, Japan) have become available.
To determine the effectiveness of this foldable yellow–tinted intraocular lens (Yellow–IOL) in improving the quality of vision, we measured contrast sensitivity during the early postoperative period in eyes implanted with the Yellow–IOL or ordinary foldable intraocular lenses (UV–IOL).
Cataract surgery (phacoemulsification and posterior chamber IOL) was performed in 48 consecutive eyes of 38 patients. Thirty eyes of 25 patients were implanted with UV–IOL, 18 eyes of 13 patients were implanted foldable Yellow– IOL. Patient ages ranged from 50 to 83 years. Patients with visual acuity of 0.7 or better after surgery were entered into our study. The same preoperative procedures and postoperative therapy were applied in all cases. Visual acuity and contrast sensitivity (with or without glare) were measured within a week after surgery.
Under normal conditions, contrast sensitivity in Yellow–IOL group is better than that of UV–IOL group at all frequency regions. Under glare conditions, contrast sensitivity at the low frequency region was lower than that under normal conditions in both UV–IOL and Yellow–IOL groups. The UV–IOL group showed significantly lower contrast sensitivity under glare than without glare at 3 cycles/degree and 6 cycles/degree. The Yellow– IOL group showed statistically higher sensitivity at this low frequency region than UV–IOL group significantly.
Eyes implanted with Yellow–IOL had significantly higher contrast sensitivity than those implanted with UV–IOL. The foldable Yellow–IOL is expected provide better quality of vision than UV–IOL.
This PDF is available to Subscribers Only