Gravitational lensing in the Simpson-Visser black-bounce spacetime in a strong deflection limit

A Simpson-Visser spacetime has two nonnegative parameters $a$ and $m$ its metric is correspond with (i) a Schwarzschild for $a=0$ $m\neq0$, (ii) regular black hole $a<2m$, (iii) one-way traversable wormhole $a=2m$, (vi) two-way $a>2m$, (v) an Ellis-Bronnikov $a\neq0$ $m=0$. The one of the most useful spacetimes purpose comprehensively understanding gravitational lensing light rays reflected by photon sphere holes wormholes. We have investigated in strong deflection limit all $m$. In case $a=3m$, spheres antiphoton at throat degenerate into marginally unstable sphere. angle diverges nonlogarithmically limit.