Light Filters in Intraocular Lenses (IOLs) and Its Influence on Colour and Contrast Vision.

Influence of Light-filters in IOLs on Color Perception and Contrast Acuity. A Randomized, Double-masked Study With Intraindividual Comparison.

Visible-light-filtering IOLs are implanted increasingly often in cataract surgery. Several studies examined the effect of light-filters on contrast and colour vision. However, the study outcomes were varying. The present study investigated the effect of two light-filtering IOL on colour perception and contrast acuity using highly sensitive measurement methods.

Prospective, randomized, double-masked study with intraindividual comparison. Implantation of a Polylens Y30 IOL in one eye and an Orange Series Model PC 440 Y in the contralateral eye.

Inclusion Criteria:

• bilateral age-related cataract
• age 55 to 80 years
• expected postoperative visual acuity of at least 1.0

Exclusion Criteria:

• amblyopia
• corneal scars
• diabetes
• arterial hypertonia
• pseudoexfoliation-syndrome
• earlier ocular surgeries or laser treatments
• intraocular tumors
• color abnormalities
• expected postoperative visual acuity lower 1.0