My functions by (almost) that same name do nothing for me ND wise.
RealRom:FFA92348 MoveIrisFullOpen ; DATA XREF: RealRom:FFB59D84o
RealRom:FFA92348 STMFD SP!, {R4,LR}
RealRom:FFA9234C LDR R4, =0xBEFC
RealRom:FFA92350 MOV R1, #1
RealRom:FFA92354 LDR R0, [R4]
RealRom:FFA92358 BL sub_FF8661AC
RealRom:FFA9235C ADR R0, loc_FFA92234
RealRom:FFA92360 MOV R1, #0
RealRom:FFA92364 BL sub_FFA92438
RealRom:FFA92368 LDR R0, [R4]
RealRom:FFA9236C LDMFD SP!, {R4,LR}
RealRom:FFA92370 MOV R2, #0
RealRom:FFA92374 MOV R1, #1
RealRom:FFA92378 B sub_FF865FD4
RealRom:FFA9237C ; ---------------------------------------------------------------------------
RealRom:FFA9237C
RealRom:FFA9237C MoveIrisFullClose ; DATA XREF: RealRom:FFB59D8Co
RealRom:FFA9237C STMFD SP!, {R4,LR}
RealRom:FFA92380 LDR R4, =0xBEFC
RealRom:FFA92384 MOV R1, #1
RealRom:FFA92388 LDR R0, [R4]
RealRom:FFA9238C BL sub_FF8661AC
RealRom:FFA92390 ADR R0, loc_FFA92234
RealRom:FFA92394 MOV R1, #0
RealRom:FFA92398 BL sub_FFA92400
RealRom:FFA9239C LDR R0, [R4]
RealRom:FFA923A0 LDMFD SP!, {R4,LR}
RealRom:FFA923A4 MOV R2, #0
RealRom:FFA923A8 MOV R1, #1
RealRom:FFA923AC B sub_FF865FD4