CPC A61H 35/02 (2013.01) [A61B 3/102 (2013.01); A61F 9/0008 (2013.01); A61F 9/02 (2013.01); A61F 2009/00891 (2013.01); A61H 2201/1238 (2013.01); A61H 2201/165 (2013.01); A61H 2205/024 (2013.01)] | 20 Claims |
1. An apparatus to control humidity level of a fluid in a cavity over an anterior surface of a patient eye comprising:
an enclosure, sized and shaped to form the cavity over the anterior surface of the patient eye the enclosure including an inlet to receive the fluid and an outlet to return the fluid for recirculation, the cavity configured to contain the fluid in contact with the patient eye;
a humidity sensor in communication with the cavity, configured to sense an indication of humidity level in the cavity; and
a processor circuit configured to receive the indication of the humidity level and generate a control signal that is capable of both increasing and decreasing the humidity level of the fluid in the cavity.
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