Document And Entity Information - shares	3 Months Ended
	Apr. 01, 2022	Apr. 29, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 01, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Entity Registrant Name	STAAR SURGICAL CO
Entity Central Index Key	0000718937
Current Fiscal Year End Date	--12-30
Entity Filer Category	Large Accelerated Filer
Trading Symbol	STAA
Entity Common Stock, Shares Outstanding		47,811,264
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity File Number	0-11634
Title of 12(b) Security	Common
Security Exchange Name	NASDAQ
Entity Tax Identification Number	95-3797439
Entity Address, Address Line One	25651 Atlantic Ocean Drive
Entity Address, City or Town	Lake Forest
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92630
City Area Code	626
Local Phone Number	303-7902
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false