Comparability of Keratometry of VERION Image Guided System With Established Measuring Devices

Heidelberg University150 enrolled

Overview

The purpose of this study is to determine if the keratometric functions of the VERION Image Guided System are comparable to those of established keratometric devices (IOLMaster 500, Pentacam HR, LenStar LS900). Calculated intraocular lenses (IOLs) are compared as a clinical consequence of the biometric measurement for IOLMaster 500, LenStar LS900 and VERION Image Guided System. In addition the comfort and duration of examination in the different devices is evaluated.

Study Type

INTERVENTIONAL

Allocation

Purpose

DIAGNOSTIC

Masking

NONE

Enrollment

150

Conditions

Healthy

Interventions

Slit lampDEVICE

Examination of cornea

AutorefractorDEVICE

Measurement of refraction

IOLMaster 500DEVICE

Measurement of axial length and white-to-white distance; Keratometry; IOL calculation

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * All interested individuals * Full legal capacity Exclusion Criteria: * Pre-existing or actual ocular disease or pathology, history of ocular surgery * Contact lens wear 2 weeks before examination

Locations (1)

Department of ophthalmology, University of Heidelberg

Heidelberg, Baden-Wurttemberg, Germany

Outcomes

Primary Outcomes

Accuracy of repeatability of keratometry as performed by VERION Image Guided System

Time frame: 3 immediate repetitions at study visit (study consists of 1 visit only)

Secondary Outcomes

Subjective comfort for test persons as evaluated by questionnaire

Time frame: Immediately after study visit (study consists of 1 visit only)

Duration of measurements of each keratometric device as taken by stopwatch

Time frame: During measurements from placement of head until completion

Keratometric values as measured by IOLMaster 500, Pentacam HR, LenStar LS900, VERION Image Guided System

Time frame: At study visit (study consists of 1 visit only)

White-to-White distance as measured by IOLMaster 500, Pentacam HR, LenStar LS900, VERION Image Guided System

Time frame: At study visit (study consists of 1 visit only)

Intraocular lens calculation as performed by IOLMaster 500, LenStar LS900, VERION Image Guided System

Time frame: Immediately after measurement

Data from ClinicalTrials.gov

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