Should I be concerned glasses were forgotten during laser hair removal?

I suggest you see an eye physician as there may potentially be complications from the laser light.  Best, Dr. Emer.

Lasers
can be very dangerous, which is why protective eyewear is so important when
performing any laser procedure. No one is perfect and people make mistakes, but
the fact that this important safety precaution was skipped is very concerning.
Visit an ophthalmologist to determine if your eyes were damaged in any way. In
the future, be sure you are given eyewear before any subsequent laser hair
removal treatments. And only receive treatment from certified laser technicians.

This is concerning. Please see an ophthalmologist soon. There could be some eye damage from the laser. I always like to put metal eye shields on patients rather then glasses because they are the safest way to prevent laser eye injury.