In order to develop an innovative device to study infectious keratitis, we need to illuminate the cornea of patients suffering from an infectious keratitis with red or near-infrared light. Because of technical reasons the shortest possible wavelength (red) presents advantages.
The aim of this preliminary study is to measure the maximal intensity tolerated during illumination with 6 wavelength corresponding : 2 red, 2 far red and 1 near infrared lights in order to determine the shortest wavelength well tolerated by patients, in comparison with the standard blue light illumination.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
30
The 6 lights used randomly are : * 482nm =standard blue light illumination, * 650nm, * 675nm, * 700nm, * 750nm * 800nm
CHU de Saint-Etienne
Saint-Etienne, France
Light intensity
For each wavelength, the highest light intensity tolerated by the patient is measured (mWatts/cm² )
Time frame: At the inclusion
Severity of the keratitis
It is determined by slit lamp. The result is "severe" or "not severe"
Time frame: At the inclusion
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