This design consists of thin patches of eye-shaped, high durometer (very soft) silicone (<1mm thickness) with an air chamber inside. The Figure below explains its concept of operation.
Figure : Design description of pneumatic exopatch
A cut-out section of the unassembled patch in illustrates the top and bottom layers and the air pocket in between.
Figure: Cut-out of unassembled patch.
Improvements may be made by introducing channels in the design with strain limiting sections (e.g. with embedded stiff fibres) in between which can limit the expansion to occurring purely axially. A key challenge will be designing patches which can expand enough to provide closure while also being "strain free", or comfortable, while the eye is open.