Evaluation of the Visual Acuity After the Implantation of a ReSTOR +2.5 Diopters Intraocular Lens (ReSTOR SV25T0) in the Distance Dominant Eye, in Combination With a +3.0 Diopters ReSTOR Intraocular Lens (ReSTOR SN6AD1) in the Fellow Eye.
Overview
- Phase
- Phase 4
- Intervention
- Not specified
- Conditions
- Cataract
- Sponsor
- Charite University, Berlin, Germany
- Enrollment
- 15
- Locations
- 1
- Primary Endpoint
- Visual acuities in the far, intermediate and near
- Status
- Completed
- Last Updated
- 10 years ago
Overview
Brief Summary
The objective of this study is to assess the visual outcome after the combined binocular implantation of +2.5 D and +3.0 D apodized diffractive multifocal intraocular lenses.
Detailed Description
Bifocal multifocal intraocular lenses (MIOL) are effective in achieving good uncorrected visual acuities in the distance and the near. However, the intermediate vision is of increasing relevance for everyday's life. Several multifocal intraocular lenses have been developed to improvement intermediate vision. Nonetheless, those systems still possess adverse photic effects and do not garantuee spectacle independence. Therefore, the combination of a lower-addition bifocal intraocular lense in the distance-dominant eye with a higher-addition bifocal intraocular lense in the fellow-eye might be a promising approach to address these drawbacks of current binocular and trifocal intraocular lenses.
Investigators
PD Dr. med. Eckart Bertelmann
managing senior physician
Charite University, Berlin, Germany
Eligibility Criteria
Inclusion Criteria
- •clinically significant cataract
- •endothelial cell count: patients aged 18-75 years: \> 1000 cells/mm2; patients \> 75 years: \> 750 cells/mm2
- •absence of vision-limiting corneal or retinal comorbidities
- •capability to understand the informed consent
Exclusion Criteria
- •expected postoperative astigmatism \> 0.75 diopters
- •irregular astigmatism
- •dilated pupil diameter \< 3 mm
- •corneal and fundus abnormalities that might cause visual impairments
- •inability to attend follow-up visits
Outcomes
Primary Outcomes
Visual acuities in the far, intermediate and near
Time Frame: 3 months
Visual acuities are tested under photopic conditions at 5 m, intermediate (80 cm) and patient-preferred near distance (≈ 40 cm).
Mesopic vision
Time Frame: 3 months
Mesopic visual acuities are tested under high-contrast, low-contrast and low-contrast with glare.
Scotopic contrast sensitivity
Time Frame: 3 months
Scotopic contrast sensitivity are tested at 0.1 cd/m2, 0.032 cd/m2 and 0.1 cd/m2 with glare.
Secondary Outcomes
- Spectacle independence in the far, intermediate and near(3 months)