The aeroplane doesn't know it's day, night an ILS or visual approach. The physics of flight does not change one iota.
The only one who knows the difference is the pilot. If you feel you are less safe on a visual approach than an ILS approach, you shouldn't be flying an aeroplane.
You have the same indicators for spacial and situational awareness for both approaches, and all the tools to do both equally as safely on a fine day.
I remember back in the GA days an ILS approach was considered the harder aporoach. This was due to the precision required to fly it within tolerance compared to a normal every day circuit and visual approach.
At least you've got a PAPI and track miles
