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

Hospital Hietzing

Status and phase: Completed; Phase 4

Conditions: Cataract

Treatments: Procedure: Orange Series Model PC 440 Y intraocular lens; Procedure: Polylens Y30 intraocular lens

Study type: Interventional

Funder types: Other

Identifiers

NCT00612729

Ye-Or 2008

Details and patient eligibility

About

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.

Full description

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.

Enrollment: 32 patients

Sex: All

Ages: 55 to 80 years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind