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Segment Information - Summary of Operating Result Information for Each Reportable Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Revenue    
Revenue $ 19,265 $ 18,824
Cost of goods sold    
Cost of goods sold 2,793 3,048
Gross profit    
Gross profit 16,472 15,776
Operating expense 31,195 33,344
Loss from operations (14,723) (17,568)
Investment income 1,648 1,810
Interest expense (1,204) (1,276)
Loss on debt extinguishment (1,962) 0
Other expense, net (8) (19)
Loss before income tax (16,249) (17,053)
Surgical Glaucoma    
Revenue    
Revenue 18,257 17,334
Cost of goods sold    
Cost of goods sold 2,209 2,362
Gross profit    
Gross profit 16,048 14,972
Dry Eye    
Revenue    
Revenue 1,008 1,490
Cost of goods sold    
Cost of goods sold 584 686
Gross profit    
Gross profit $ 424 $ 804