Healthy
Conditions
Keywords
keratometry, verion, iol, intraocular lens, iolmaster, lenstar, pentacam, IOL calculation, VERION Image Guided System
Brief summary
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.
Interventions
DEVICESlit lamp
Examination of cornea
DEVICEAutorefractor
Measurement of refraction
DEVICEIOLMaster 500
Measurement of axial length and white-to-white distance; Keratometry; IOL calculation
DEVICEPentacam HR
Measurement of white-to-white distance; Keratometry
DEVICELenStar LS900
Measurement of axial length and white-to-white distance; Keratometry; IOL calculation
DEVICEVERION Image Guided System
Measurement of white-to-white distance; Keratometry; IOL calculation with axial length value of IOLMaster 500
Sponsors
Heidelberg University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Accuracy of repeatability of keratometry as performed by VERION Image Guided System | 3 immediate repetitions at study visit (study consists of 1 visit only) |
Secondary
| Measure | Time frame |
|---|---|
| Subjective comfort for test persons as evaluated by questionnaire | Immediately after study visit (study consists of 1 visit only) |
| Duration of measurements of each keratometric device as taken by stopwatch | During measurements from placement of head until completion |
| Keratometric values as measured by IOLMaster 500, Pentacam HR, LenStar LS900, VERION Image Guided System | 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 | At study visit (study consists of 1 visit only) |
| Intraocular lens calculation as performed by IOLMaster 500, LenStar LS900, VERION Image Guided System | Immediately after measurement |
Countries
Germany
Outcome results
None listed