  We study the effects of a strongly interacting Higgs sector on the amplitudes
for $\gamma\,\gamma\rightarrow W_L^+\,W_L^-, Z_L^{\,0}\,Z_L^{\,0}$ by
unitarizing the $W_L^+\,W_L^-, Z_L^{\,0}\,Z_L^{\,0}, \gamma\,\gamma$ system
using the $K$--matrix technique. Unitarization produces substantial corrections
to the cross sections for gauge boson pair production by photon fusion when
$m_H \agt 5-10\;$TeV.
