Measurement of Refractive SE Following Implantation of LS313 MF30 IOL

Completed

Conditions: Refractive Errors

Interventions: Diagnostic Test: Measurements of the postoperative refraction

Registration Number: NCT03292614

Lead Sponsor: Dietrich-Bonhoeffer-Klinikum

Brief Summary: This Study determines the most precise method for measuring post-operative refraction following implantation of the asymmetric multifocal LS-313 MF30 comparing the results of Refraction of the different Autorefractor Keratometers with the subjective measurements for distance and near.

Detailed Description: This is a post market study without invasive interventions. The patients have been treated with cataract surgery and MIOL Implantation at least 3 months ago. They will be invited for only one follow up visit to measure the postoperative refraction with different Autorefractor-Keratometers, a Manual Refractometer, the test device "iTrace" and with determination of the subjective refraction for distance and near with the appropriate corrections at the Department of Ophthalmology in Neubrandenburg, Germany.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 25

Inclusion Criteria

Patients after cataract surgery with implantation of the MICS-IOL LS-313 MF30 postoperative clear cornea willing to participate in the study

Exclusion Criteria

significant corneal opacities, history of keratoplasty, Anterior capsule phimosis, posterior capsular opacification if patients refuse Nd:YAG laser treatment of the secondary cataract

Study & Design

Study Type: OBSERVATIONAL

Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Multifocal intraocular lens implantation	Measurements of the postoperative refraction	Patients who have undergone a cataract surgery with implantation of a multifocal intraocular lens LS313 MF30, Oculentis Berlin, will be invited for Measurements of the postoperative refraction

Primary Outcome Measures

Name	Time	Method
Evaluation of the Most Precise Method for Measuring Post-operative Refraction Following Implantation of the Asymmetric Multifocal LS-313 MF30	one year	After the implantation of the LS 313 MF30 (a refractive, asymmetrical, multifocal intraocular lens), the most reliable refraction method so far has been the subjective determination of far and near refraction. A faster and widespread method is the measurement with auto-refractometers (KR-1W (TOPCON), KR-800s (TOPCON), ARK-560 (NIDEK), ARK-760A (NIDEK)) or manual refractometers (PR60/50 (Rodenstock)). KR-1W, KR-800s, ARK-560A, ARK-760A only allow a central measurement without separate measurement of the two optical zones. The manual refractometer PR60/50 (Rodenstock) is able to separately measure the different focal points of the multifocal lens using a light cone with 3 mm diameter. The test device iTrace (TraceyTechnologies): is also able to separately measure the different focal points of the multifocal lens, but uses a light cone with a diameter of about 1 mm. The results of all refractometers are compared with the subjective refraction.