In vivo evaluation of blue-light attenuation with tinted and untinted intraocular lenses
Kontadakis GA., Plainis S., Moschandreas J., Tsika C., Pallikaris IG., Tsilimbaris MK.
Purpose: To evaluate blue-light attenuation in eyes with a tinted intraocular lens (IOL) or an untinted IOL. Setting: Department of Ophthalmology, University Hospital of Crete, Crete, Greece. Design: Comparative case series. Methods: Patients had lens extraction and implantation of an Acrysof Natural tinted or Tecnis ZA9003 or Softec III untinted acrylic IOL. The luminance ratio of green (530 nm) and blue (465 nm) light (green:blue ratio) required for isoluminant perception was determined by heterochromatic flicker photometry. Patients were tested preoperatively and 20 days postoperatively. The parafoveal measure of the green:blue ratio, expressed in decibels, is proportional to the blue-light attenuation by the lens. Results: Twenty-two patients received the tinted IOL and 21 the untinted IOL. Preoperatively, age was strongly linearly correlated with the green:blue ratio (r = 0.59, P