Eye treatment apparatus and method with independent pressure sources

An apparatus to permit independent adjustment of a chamber cavity pressure in a corresponding environment over an anterior surface of each individual eye of a patient, the apparatus comprising:

• a left cover, sized and shaped to fit over a left eye of a patient to define a left cavity between the left cover and an anterior surface of the left eye;
• a left pump, in communication with the left cavity, configured to deliver a left cavity pressure level to the left cavity;
• a right cover, sized and shaped to fit over a right eye of the patient to define a right cavity between the right cover and an anterior surface of the right eye;
• a right pump, in communication with the right cavity, configured to deliver a right cavity pressure level to the right cavity where the left cavity pressure level is different from the right cavity pressure level, the right pump being separate and independently operable from the left pump;
• and
• control circuitry, coupled to at least one of the left pump or the right pump, the control circuitry configured such that the left pump is capable of delivering the left cavity pressure level to the left cavity independently of the right pump and the right pump is capable of delivering the right cavity pressure level to the right cavity independently of the left pump.