Keratoconus prognosis study for patients with corneal external mechanical stress mode.

Purpose: To demonstrate the correlation between excessive eye rubbing and corneal degeneration for Keratoconus patients.

Materials And Methods: Keratoconus (KC) patients who regularly rub their eyes had shown a rapid degeneration rate of their affected corneas. This observation is experimentally and numerical discussed and developed based on clinical data of 8 of KC Patients with a mean age of 26.

Multi-thresholds for fault isolation in the presence of uncertainties.

Monitoring of the faults is an important task in mechatronics. It involves the detection and isolation of faults which are performed by using the residuals. These residuals represent numerical values that define certain intervals called thresholds.