Segment Information (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Total revenue	$ 1,118	$ 583	$ 3,568	$ 2,272
Optical [Member]
Total revenue	892	520	3,009	2,178
Direct Dose Rx [Member]
Total revenue	$ 226	$ 63	$ 559	$ 94