Example embodiments relate to lighting devices with adjustable light distribution. One embodiment includes a lighting device. The lighting device includes a support with a first light source arranged on the support. The lighting device also includes a lens assembly that includes a flexible solid first lens element extending over the first light source. The first lens element includes a lens portion and an edge portion surrounding the lens portion. Further, the lighting device includes a retaining and adjustment means configured to change a shape of the lens portion while the edge portion is retained in a fixed position with respect to the support. The first light source and the first lens element are configured to generate a first light beam. The retaining and adjustment means is configured to adjust the shape of the first light beam.