Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 01, 2023 USD ($) Customer	Jul. 02, 2022 USD ($) Customer	Jul. 01, 2023 USD ($) Customer	Jul. 02, 2022 USD ($) Customer	Dec. 31, 2022 USD ($) Customer		Jan. 01, 2023 USD ($)
Disclosure Summary Of Significant Accounting Policies [Line Items]
Service contract warranty period			1 year
Service contract, period to determine nature of sale			60 days
Arrangement fee			$ 200
Fair value of distribution right			14,800
Amortization cost	$ 20	$ 0	41	$ 0
Impairments expenses	0	0	0	0
Deferred revenue recognized			900	300
Non-current portion of deferred revenue pertains to exclusivity fee deferred revenue	10,400		10,400
Current portion of deferred revenue pertains to exclusivity fee deferred revenue	$ 1,500		$ 1,500
Products warranty period			2 years
Capitalized implementation costs amortization period	5 years		5 years
Amortization expense			$ 0	0
Accumulated deficit	$ (74,328)		(74,328)		$ (69,716)	[1]
Adoption of ASU 2016-13
Disclosure Summary Of Significant Accounting Policies [Line Items]
Accumulated deficit							$ 200
Prepaid Expenses and Other Current Assets and Other Long Term Assets
Disclosure Summary Of Significant Accounting Policies [Line Items]
Deferred costs incurred	722		722
Capitalized implementation costs	1,100		1,100
Revenue, Total
Disclosure Summary Of Significant Accounting Policies [Line Items]
Amortization cost	19	$ 0	38	$ 0
Impairments expenses	$ 0		$ 0
Revenue, Total | Minimum
Disclosure Summary Of Significant Accounting Policies [Line Items]
Amortization period	2 years		2 years
Revenue, Total | Maximum [Member]
Disclosure Summary Of Significant Accounting Policies [Line Items]
Amortization period	3 years		3 years
Revenue, Total | Prepaid Expenses and Other Current Assets and Other Long Term Assets
Disclosure Summary Of Significant Accounting Policies [Line Items]
Deferred costs incurred	$ 130		$ 130
Revenue, Total | Topcon [Member] | Customer Concentration Risk
Disclosure Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer	1	1	1	1
Accounts Receivable | Topcon [Member] | Credit Concentration Risk
Disclosure Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer			1		1
Percentage of accounts receivable accounted			27.00%		37.00%
Accounts Receivable | Topcon [Member] | Credit Concentration Risk | One Customer | Minimum
Disclosure Summary Of Significant Accounting Policies [Line Items]
Customer and supplier accounted percentage of total revenues, accounts receivable and purchases			10.00%		10.00%
Revenue, Total | Topcon [Member] | Customer Concentration Risk
Disclosure Summary Of Significant Accounting Policies [Line Items]
Percentage of accounts receivable accounted	28.00%	26.00%	30.00%	28.00%
Revenue, Total | Topcon [Member] | Customer Concentration Risk | One Customer | Minimum
Disclosure Summary Of Significant Accounting Policies [Line Items]
Customer and supplier accounted percentage of total revenues, accounts receivable and purchases	10.00%	10.00%	10.00%	10.00%
Distribution Rights [Member]
Disclosure Summary Of Significant Accounting Policies [Line Items]
Revenue Recognized	$ 300	$ 300	$ 700	$ 600
Royalty Agreements
Disclosure Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer			4

[1] Derived from the audited consolidated financial statements included in the Annual Report on Form 10-K filed with the SEC for the year ended December 31, 2022.