Ocular ultrasound probe

A method for treating a disease or disorder of an ocular blood flow, the method comprising:

• a) supplying microbubbles to a blockage within a retinal vessel, said supplying including supplying the microbubbles to an occluded retinal vein,
• b) using an ocular ultrasound probe, which includes a housing and an ultrasound transducer element in the housing,
• wherein an outer surface of said housing has a shape of a semicircle, a crescent, or a wedge and is dimensioned to be placed in contact with and onto an eye or an eyelid at a first location corresponding to a second location, the second location being a location designated for placement of a contact lens on the eye,
• to position said probe at said first location such that the outer surface is in contact with a surface of the eye or the eyelid;
• and
• to retain and secure the probe at the eyelid with a use of an outer ring of the housing to hold the probe in place,
• and
• c) reducing or eliminating the blockage by applying ultrasound energy having a frequency in a range between 1 MHz and 10 MHz from the so-secured probe to a retinal site in the eye to initiate cavitation at the microbubbles while avoiding delivery of said energy to a crystalline lens of the eye and simultaneously optically viewing the retinal site with an optical viewing instrument through an opening in the ultrasound transducer.