Leicester lock Martin Corry has been cited for an incident involving Ospreys hooker Richard Hibbard at the weekend.
Former England captain Corry will appear before an independent disciplinary committee after being cited following the 15-9 Heineken Cup Pool Three defeat in Wales.
The citing commissioner for the match, Denis Templeton, cited Corry for "an alleged strike/contact with the eye/eye area of Ospreys player Matthew Hibbard (No 2) in contravention of Law 10.4 (a) and 10.4 (k)."
Corry retired from international rugby after the 2007 World Cup and has no great history of disciplinary trouble.
If the offence is proven and is treated as gouging, it can carry a ban anywhere from 12 weeks up to a maximum of three years for very serious offences.
Earlier this season Northampton hooker Dylan Hartley was given a six-month ban for gouging and his Irish club-mate Neil Best was suspended for 18 weeks.