Cataract
Conditions
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.
Interventions
OTHERmeasurement of axial length and keratometry by sonographers with a topographic module
measurement of axial length and keratometry by sonographers with a topographic module
Sponsors
Edouard KOCH
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SUPPORTIVE_CARE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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. |
Outcome results
None listed