IOLMASTER 700 Central Topography Workflow Study.

Study Overview
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Brief Summary
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The use of ocular biometers like IOLMaster 700, is a common practice to identify several ocular parameters such as the keratometry of the cornea and the axial length of the eye, which are necessary for calculating the power of the intraocular lens in cataract surgery. However, the additional use of other devices, such as Cassini and Pentacam is used to obtain more information of the central topography of the eye. Recently, a new version of the IOLMaster 700 equipment that provides much more detailed information than in its previous version has been presented. The objective of this study is to measure the time that the new IOLMaster 700 takes to perform these measurements of the central topography and compare it with the time it takes using the central topography using the standard IOLMaster 700 version with Cassini on one hand and Pentacam on the other. It is hypothesized that the use of the new version of the IOLMaster 700 equipment alone can reduce the time of measurements and improve the clinic workflow.

Official Title
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IOLMASTER 700 Central Topography Workflow Study.

Conditions
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Cataract

Intervention / Treatment
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* Device: IOLMaster 700 with central topography
* Device: IOLMaster 700 without central topography plus Cassini
* Device: IOLMaster 700 without central topography plus Pentacam


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients that have to undergo a cataract surgery Patients older than 50 years. Exclusion Criteria: Patients that have already undergone a previous corneal surgery. Patients suffering from keratoconus. Patients exhibiting corneal scars Patients exhibiting pterygium

Ages Eligible for Study
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Minimum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Single arm<br>All patients will be assigned to this cohort. | Device: IOLMaster 700 with central topography<br>* The time needed to perform the measurement using the IOLMaster700 equipment with central topography will be recorded.<br>Device: IOLMaster 700 without central topography plus Cassini<br>* The time needed to perform the measurement using the IOLMaster700 equipment without central topography plus the Cassini equipment will be recorded.<br>Device: IOLMaster 700 without central topography plus Pentacam<br>* The time needed to perform the measurement using the IOLMaster700 equipment without central topography plus the Pentacam equipment will be recorded.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time needed to do the measurements with each equipment | Time needed to do the measurements with each equipment | 1 day (Cataract pre-surgery visit) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Central topography | Measurement of keratometry (K): Flat Keratometry (K1) and Steep Keratometry (K2) | 1 day (Cataract pre-surgery visit) |