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Yellow-tinted IOL exerts minimal impact on color perception in four vision tests

J Cataract Refract Surg. 2011; 37(9):1598-1604

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Clear and yellow-tinted IOLs did not appear to influence color perception, regardless of the color vision test used, a study found.

Yellow-tinted IOLs block blue light and protect the retina from damage caused by short wavelengths of light.

"The theoretical benefits of a blue light-filtering IOL must not be outweighed by potentially detrimental aspects," the study authors said. "There has been a debate since the introduction of light-filtering IOLs on how much blue light they should filter. At present, there is no clinical evidence that patients are at a disadvantage if they receive blue light-filtering IOLs."

The prospective study included 100 eyes of 100 patients; 50 eyes were implanted with an AcrySof IQ SN60WF yellow-tinted IOL and 50 eyes received an AcrySof SA60AT clear IOL (both Alcon).

Uncorrected distance visual acuity, IOP and color vision (Ishihara pseudoisochromatic test, ED ridge-Green lantern test, Heidelberg anomaloscope and Farnsworth-Munsell 100-hue test) were evaluated postoperatively and at 1 month and 3 months.

Study results showed no significant between-group differences in color vision on any of the four color perception tests (P > .05).

All patients in both lens groups were able to read a minimum of 17 plates correctly on the Ishihara test. Most patients had average or superior color perception on the Farnsworth-Munsell 100-hue test. All patients correctly identified all four colored lights on the lantern test, the authors said.