Aggregate number of common shares reserved for future issuance.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of cash inflow from issuance of shares under share-based payment arrangement. Includes, but is not limited to, option exercised.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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Description of terms of award under share-based payment arrangement.

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Number of non-vested options outstanding.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Stock-Based Compensation Expense - Additional Information (Details) - USD ($) $ in Millions		12 Months Ended
	Jul. 28, 2021	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Conversion of preferred stock		10,951,460	6,878,511
Common stock issued (in shares)		28,268,389	27,366,746
Total unrecognized expense related to unvested stock options		$ 6.1	$ 8.8
Share-based Compensation, Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation, Terms of Award			Stock option awards are generally granted with an exercise price of no less than 100% of estimated fair market value on the date of grant. Time based awards generally vest over four years as follows: one fourth of the total number of shares vest and become exercisable on the one-year anniversary; 1/48th of the total number of shares subject to the option vest and become exercisable on each monthly anniversary thereafter for the remaining three years.
Stock-Based Compensation, Vesting period			4 years
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested at December 31, 2022		492,862
2021 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock available for issuance	2,420,135
Conversion of preferred stock				1,094,670
Common stock issued (in shares)	7,260,406
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum	4.00%
Weighted average period for recognition of expenses		2 years 3 months 18 days	3 years 6 months
2021 Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Conversion of preferred stock	4,569,530
2021 Employee Stock Purchase Plan \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Conversion of preferred stock	1,452,081			273,667
Common stock issued (in shares)	664,976
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum	1.00%
2021 Employee Stock Purchase Plan \| Maximum [Member] \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum	85.00%
The Calhoun Vision, Inc. 2015 Equity Incentive Plan and the Calhoun Vision, Inc. 2006 Stock Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Intrinsic Value of Vested Options		$ 15.9	$ 14.7
Intrinsic Value of Outstanding Options		16.4	14.7
Total Cash Received from the Exercise of Stock Options		0.8	1.6
Total Fair Value Less Strike Price of Stock Options Exercised		$ 1.8	$ 4.0
Unvested at December 31, 2022		2,447,687	2,437,649
Total unrecognized expense related to unvested stock options		$ 19.1	$ 20.1
Weighted average period for recognition of expenses		2 years 7 months 6 days	3 years