igorF iiyama ProLite XB2483HSU-B3
I found M238HVN01.0 panel in my benq bl2420z, same installed in iiyama X2483HSU-B2 ( B3 has another panel )
Are you sure, monitor is your main problem? From my exp, issue are: motherboard + grapfic card -> OS + drivers -> Monitor… each part of pipeline can increase/decrease eye-strain
You also can try acer240 or acer241 line ( both based on LG LM238WF2 panels, vcom looks like used in my benq )