Zeiss® IOLMaster 700 Corneal Topography Module Comparison With Schwind's Sirius Corneal Topography®

Not Applicable

• Conditions: Cataract
• Interventions: Other: measurement of axial length and keratometry by sonographers with a topographic module

• Registration Number: NCT05414773
• Lead Sponsor: Edouard KOCH

Brief Summary

In order to determine the intraocular lens to be implanted during cataract surgery, keratometry and axial length must be measured in preoperative. The axial length is obtained by ocular ultrasound mode B. Keratometry is obtained by means of an automatic refractometer or corneal topography. Currently, ultrasound scanners are being developed with a topography module to combine axial length and keratometry measurement. The investigators want to evaluate the corneal topography module of the Zeiss® IOL Master 700 biometer.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2022-06-03
• Study First Submitted QC: 2022-06-08
• Study First Posted: 2022-06-10
• Status Verified: 2022-08
• Last Update Submitted: 2022-08-22
• Last Update Posted: 2022-08-24
• Study Start: 2022-09-01
• Primary Completion: 2023-07-01
• Study Completion: 2024-01-30

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

• Men and Women Requiring CHV Cataract Surgery
• Aged 18 or over
• Insured under a social security scheme
• Having been informed of the clinical study and having given oral express consent

Exclusion Criteria

• Person unable to express consent
• Patient with a history of corneal dystrophy, corneal refractive surgery or keratoconus.
• History of chronic corneal disease

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Corneal Topography with IOLMaster and Sirius topography.	measurement of axial length and keratometry by sonographers with a topographic module	The experimental group will have the two exams: the topography with the IOLMAster and the topography with Sirius topography.

Primary Outcome Measures

Name	Time	Method
keratometry measurements	day 1	to show that the keratometry measurements obtained using the topography module integrated in the IOL Master 700 are consistent with those obtained by a standard topography in patients operated for cataract surgery. The measures will be: K1 (steepest corneal meridian), K2 (flattest corneal meridian), Kmax (central corneal keratometry), the unit of measurement is the diopter.