| 摘要 |
A thermo-keratoplasty system and method for locally heating and reshaping a cornea in a manner that produces a minimal regression of the corneal correction. The system includes a probe (12) that is coupled to a power source (14) which can provide a predetermined power, frequency and time duration that creates a thermal profile within the cornea which extends from the epithelium into the corne al stroma. The electrical return of the probe is a lid speculum (202) which mai ntains the eyelids in an open position. The probe (12) i s placed into contact with the cornea and energy is transformed from the power source (14) to the eye, through the lid speculum (202) and bac k to the power source (14). The energy from the power supply is focused by a prob e tip (240) that locally heats and denatures the cornea, and causes a subsequent shrinkage of corneal tissue. A pattern of denatured area s can be created around the cornea to correct the vision of the eye. |
