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Wenzl, E; Wohlfahrt, C; Vidic, B; Zalaudek, K; El-Shabrawi, Y; Wirtitsch, MG; Wedrich, A; Ardjomand, N.
Colour vision and contrast sensitivity with photochromatic IOL
SPEKTRUM AUGENHEILKD. 2009; 23(1): 17-20.
Web of Science


Authors Med Uni Graz:
Ardjomand Navid
El-Shabrawi Yosuf
Schmid-Zalaudek Karin
Vidic Bertram
Wedrich Andreas
Wissiak Elfriede
Wohlfart Christina

PURPOSE: Blue-filter intraocular lenses (IOLs) might inhibit the phototoxic effect of blue light on the macula and therefore reduce the risk of developing age related macular degeneration. Yellow IOLs might decrease contrast sensitivity and colour vision under mesopic conditions. Photochromatic IOLs are clear under mesopic and scotopic conditions and turn yellow under photopic conditions. This study was performed to compare patients receiving clear, yellow and photochromatic IOLs. PATIENTS AND METHODS: 45 patients were analyzed retrospectively after an uncomplicated phacoemulsification and implantation of three different kinds of IOLs: AF-1 UY (yellow, n = 14, Hoya Japan), AF-1 UV (clear, n = 17, Hoya Japan) and Aurium (photochromatic, n = 14, Medennium USA). Patients were investigated for best corrected spectacle visual acuity (BCSVA) and contrast sensitivity (Pelli Robson charts) under photopic and mesopic conditions (in 3 and 6 meter), photopic color vision and spherical aberrations. All investigations were done three months after cataract surgery. RESULTS: There was a trend for a better mesopic best corrected visual acuity in patients with photochromatic IOLs compaired to patients with yellow IOLs (p = 0.06). There was no significant difference between the patients in terms of photopic BCSVA, contrast sensitivity, colour vision or spherical aberrations. CONCLUSION: Although there was no statistical significant difference between the three types of IOLs, we could see a trend for a better mesopic best corrected visual acuity in patients with the photochromatic IOL compaired to the yellow IOL. Further studies with a larger numbers of patients are needed to confirm this trend.

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Intraocular lenses
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