Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Apr. 01, 2023 USD ($) Customer	Apr. 02, 2022 USD ($) Customer	Dec. 31, 2022 USD ($) Customer		Jan. 01, 2022	Jan. 01, 2023 USD ($)	Oct. 01, 2022
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	21	$ 0
Impairments expenses	0	0
Deferred revenue recognized	500	700
Non-current portion of deferred revenue pertains to exclusivity fee deferred revenue	10,800
Current portion of deferred revenue pertains to exclusivity fee deferred revenue	$ 1,500
Products warranty period	2 years
Capitalized implementation costs amortization period							5 years
Amortization expense	$ 0	0
Accumulated deficit	(71,562)		$ (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	743
Capitalized implementation costs	1,000
Revenue, Total
Disclosure Summary Of Significant Accounting Policies [Line Items]
Amortization cost	19	0
Impairments expenses	$ 0	$ 0
Revenue, Total | Minimum
Disclosure Summary Of Significant Accounting Policies [Line Items]
Amortization period	2 years
Revenue, Total | Maximum [Member]
Disclosure Summary Of Significant Accounting Policies [Line Items]
Amortization period	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	$ 149
Revenue, Total | Topcon [Member] | Customer Concentration Risk
Disclosure Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer	1	1
Accounts Receivable | Topcon [Member] | Customer Concentration Risk
Disclosure Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer	1
Percentage of accounts receivable accounted	35.00%
Accounts Receivable | Topcon [Member] | Customer Concentration Risk | One Customer
Disclosure Summary Of Significant Accounting Policies [Line Items]
Percentage of accounts receivable accounted					37.00%
Accounts Receivable | 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%
Accounts Receivable | Topcon [Member] | Credit Concentration Risk
Disclosure Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer			1
Revenue, Total | Customer Concentration Risk | No Customer | Minimum
Disclosure Summary Of Significant Accounting Policies [Line Items]
Customer and supplier accounted percentage of total revenues, accounts receivable and purchases		10.00%
Revenue, Total | Topcon [Member] | Customer Concentration Risk
Disclosure Summary Of Significant Accounting Policies [Line Items]
Percentage of accounts receivable accounted	32.00%	30.00%
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%
Distribution Rights [Member]
Disclosure Summary Of Significant Accounting Policies [Line Items]
Revenue Recognized	$ 400	$ 300
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.