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Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($)
Total
Convertible Preferred Stock
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Beginning Balance at Dec. 31, 2021 [1] $ (63,987,000)   $ 3,000 $ 39,893,000 $ (103,883,000)
Beginning Balance, Shares at Dec. 31, 2021 [1]     78,518    
Temporary equity, Beginning balance at Dec. 31, 2021 [1]   84,820,880      
Temporary equity, Beginning balance, shares at Dec. 31, 2021 [1]   $ 62,071      
Stock issued on exercise of stock options [1] 1,000     1,000  
Stock issued on exercise of stock options, Shares [1]     180    
Stock-based compensation expense [1] 335,000     335,000  
Net loss [1] (3,630,000)       (3,630,000)
Temporary equity, Ending balance, shares at Mar. 31, 2022 [1]   $ 62,071      
Temporary equity, Ending balance at Mar. 31, 2022 [1]   84,820,880      
Ending Balance at Mar. 31, 2022 [1] (67,281,000)   $ 3,000 40,229,000 (107,513,000)
Ending Balance, Shares at Mar. 31, 2022 [1]     78,698    
Beginning Balance at Dec. 31, 2022 (71,304,000) [2]   $ 3,000 [3] 40,400,000 [3] (111,707,000) [3]
Beginning Balance, Shares at Dec. 31, 2022 [3]     84,165    
Temporary equity, Beginning balance at Dec. 31, 2022 [3]   84,820,880      
Temporary equity, Beginning balance, shares at Dec. 31, 2022 [3]   $ 62,071,000      
Stock-based compensation expense 11,126,000     11,126,000  
Conversion of preferred stock to common stock as a result of the Merger, shares     2,442,852    
Conversion of preferred stock to common stock as a result of the Merger, shares   (84,820,880)      
Conversion of preferred stock to common stock as a result of the Merger, value 62,071,000     62,071,000  
Conversion of preferred stock to common stock as a result of the Merger, value   $ (62,071,000)      
Issuance of common stock to Graybug stockholders as a result of Merger and reset to par of $0.0001, Shares     1,571,433    
Issuance of common stock to Graybug stockholders as a result of Merger and reset to par of $0.0001 29,218,000   $ (2,000) 29,220,000  
Issuance of common shares from private placement, net, shares     596,363    
Issuance of common shares from private placement, net 10,340,000     10,340,000  
Conversion of promissory notes into common stock, shares     590,031    
Conversion of promissory notes into common stock 3,245,000     3,245,000  
Conversion of Series C-2 Warrants into common stock, share     80,254    
Conversion of Series C-2 Warrants into common stock 442,000     442,000  
Conversion of promissory note warrants into common stock, shares     152,875    
Conversion of promissory note warrants into common stock 841,000     841,000  
Merger transaction costs (4,591,000)     (4,591,000)  
Restricted stock units net settlement, shares     143,960    
Restricted stock units net settlement (297,000)     (297,000)  
Reclassification of warrant liability to equity 216,000     216,000  
Net loss (19,288,000)       (19,288,000)
Ending Balance at Mar. 31, 2023 $ 22,019,000 [2]   $ 1,000 $ 153,013,000 $ (130,995,000)
Ending Balance, Shares at Mar. 31, 2023     5,661,933    
[1]

(1) Retroactively restated for the reverse recapitalization as described in Note 2.
[2]

(1) Retroactively restated for the reverse recapitalization as described in Note 2.
[3]

(1) Retroactively restated for the reverse recapitalization as described in Note 2.