The Islanders said the most recent injury was Boychuk's second to the same eye and that he had undergone "numerous and extensive medical exams" before making the call to end his career.
Boychuk, 36, was cut by a skate in a game against the Montreal Canadiens on March 3 and required 90 stitches. Boychuk needed 90 stitches to fix a cut above his eyelid.More news: Wisconsin amid positive tests for COVID-19
Boychuk, who'll turn 37 in January, played parts of 13 seasons in the National Hockey League and spent the last six with NY.
Boychuk played just three postseason games for the Islanders when the season resumed over the summer.
"I knew there was something going on, but I didn't really want to think about it because I wanted to play", Boychuk said.More news: Lack of Canadian vaccine production means others could get inoculations first: PM
With the deliberate decision not to announce Boychuk as "retired", the Islanders will likely place Boychuk on long-term injured reserve - which would allow the organization to exceed their accruable cap space limit by the $6 million cap hit he carried. I realized that something was off, and then having a concussion in the bubble, then you start thinking about things. "I got confirmation from going to get all these tests done".
BOSTON, MA - MAY 27: Tim Thomas #30 and Johnny Boychuk #55 of the Boston Bruins celebrate their 1 to 0 win over the Tampa Bay Lightning in Game Seven of the Eastern Conference Finals at TD Garden. He played in 725 career games and scored 206 points. He was drafted 61st overall in 2002 by the Colorado Avalanche, who traded him to the Boston Bruins in 2008.More news: Apple's global security chief charged with bribery in Caliornia