  We estimate the attainable limits on the coupling of a non-standard Higgs
boson to two photons taking into account the data collected by the Fermilab
collaborations on diphoton events. We based our analysis on a general set of
dimension--6 effective operators that give rise to anomalous couplings in the
bosonic sector of the Standard Model. If the coefficients of all ``blind''
operators are of the same order of magnitude, bounds on the anomalous triple
vector-boson couplings can also be obtained.
