Clothing items such as sunglasses and certain hats could affect the player’s vision positively. Sunglasses would apply a slight tint to the player’s vision and reduce bloom, light reflections, slightly reduce light from flashlights, and reduce HDR. Certain hats, like Caps and Panamas, could sharpen the view of the player while reducing HDR effects, if added.
PS. Some of the larger hats, like cowboy or straw hats, could reduce water consumption.
Perhaps stronger helmets could actually restrict your vision as well? Perhaps some kind of Riot helmet or EOD helmet would offer more protection at the cost of slowing you down (assuming you’re wearing a full set which would slow you down quite a bit), as well as lowering your view.