Follow that with $ for a fully anchored trigger.
Anchoring is the process of ensuring your trigger ONLY ever fires on the EXACT line. The ^ [carrot] stops anything going before setting it off. The $ [dollar sign] makes certain that anything afterwards won't set it off either.
eg:
#tr {Your blindness is broken by * candescent lights.} {Blind}
this will fire on anything that matched the above PATTERN (the bit in the first brackets), no matter what comes before or after. People can randomly emote and it'll go off - also if they spell it wrong or end it wrong!
#tr {^Your blindness is broken by * candescent lights.} {blind}
anything going before will make thing trigger not work, eg an emote. Anything afterwards, however, eg a typo, another attempt to set off triggers, etc, will still set it off
#tr {^Your blindness is broken by * candecent lights.$} {blind}
Safest form of a trigger! Only that EXACT phrase sets it off.