A prosthetic capsular device configured to be inserted in an eye, the device comprising: a housing structure including: a first flat side, the first flat side including: a first end, and a second end; a second flat side opposite the first flat side, the second flat side including: a first end, and a second end; a third arcuate side extending between the first end of the first flat side and the first end of the second flat side; a fourth arcuate side extending between the second end of the first flat side and the second end of the second flat side, the fourth arcuate side opposite the third arcuate side; a posterior side including a refractive surface; an anterior side opposite the posterior side, the anterior side including an opening; and a longitudinal axis, the first flat side, the second flat side, the third arcuate side, the fourth arcuate side, the posterior side, and the anterior side at least partially defining a cavity configured to contain an intraocular device; and a ring structure includingering structure portions (5820A-D) extending radially outward from proximate one of the first end of the first flat side, the second end of the first flat side, the first end of the second flat side, and the second end of the second flat side; wherein the ring structure comprisese- radially-outwardly extending arms and aperture sections, and is not continuous between the first end of the first flat side and the second end of the first flat side, and between the first end of the second flat side and the second end of the second flat side. a housing structure including: a first flat side, the first flat side including: a first end, and a second end; a second flat side opposite the first flat side, the second flat side including: a first end, and a second end; a third arcuate side extending between the first end of the first flat side and the first end of the second flat side; a fourth arcuate side extending between the second end of the first flat side and the second end of the second flat side, the fourth arcuate side opposite the third arcuate side; a posterior side including a refractive surface; an anterior side opposite the posterior side, the anterior side including an opening; and a longitudinal axis, the first flat side, the second flat side, the third arcuate side, the fourth arcuate side, the posterior side, and the anterior side at least partially defining a cavity configured to contain an intraocular device; and a ring structure includingering structure portions (5820A-D) extending radially outward from proximate one of the first end of the first flat side, the second end of the first flat side, the first end of the second flat side, and the second end of the second flat side; wherein the ring structure comprisese- radially-outwardly extending arms and aperture sections, and is not continuous between the first end of the first flat side and the second end of the first flat side, and a first flat side, the first flat side including: a first end, and a second end; a first end, and a second end; a second flat side opposite the first flat side, the second flat side including: a first end, and a second end; a first end, and a second end; a third arcuate side extending between the first end of the first flat side and the first end of the second flat side; a fourth arcuate side extending between the second end of the first flat side and the second end of the second flat side, the fourth arcuate side opposite the third arcuate side; a posterior side including a refractive surface; an anterior side opposite the posterior side, the anterior side including an opening; and a longitudinal axis, the first flat side, the second flat side, the third arcuate side, the fourth arcuate side, the posterior side, and the anterior side at least partially defining a cavity configured to contain an intraocular device; and a ring structure includingering structure portions (5820A-D) extending radially outward from proximate one of the first end of the first flat side, the second end of the first flat side, the first end of the second flat side, and the second end of the second flat side; wherein the ring structure comprisese- radially-outwardly extending arms and aperture sections, and is not continuous between the first end of the first flat side and the second end of the first flat side, and between the first end of the second flat side and the second end of the second flat side.