For Googles of Presence, no UR google needs to offer +10 to damage, even if it's just a potentiality.
TL: DR - bring this back to +4 max.
Comparison points:
UR / Relic / Legendary Eye Patch: +2 / +3 / +5 to focus
UR Lenses of Flawsight: +2 to melee damage
Enhanced Lenses of Hunting: +2 to ranged damage
Rare Lenses of Focus: +1 to focus
Rare Lenses of Lightning: +2 to missile damage
Uncommon Lenses of the Hunter: +1 to missile damage
Given all that it seems like +3 to ranged damage in a UR eye slot is par, +4 is generous but maybe worthwhile since some classes will have to work to achieve this with their stats.
Out of the box this token is offering these ranged damage bonuses for 5th level players:
Barbarian +0
Bard +3
Cleric +2
Druid +2
Dwarf Fighter +0
Elf Wizard +3
Fighter +0
Monk: +1
Paladin: +3
Ranger: +1
Rogue: +2
Wizard: +4
There are plenty of ways to buff INT/CHA nowadays with more on the way. For example, 2025 Bead of Asgard can add +4 to your choice of INT or CHA, 2026 has a similar token in the works, and the +3 CHA Mark of the 2nd Tenet and likely +3 INT Mark of the 3rd Tenet are out there / about to be out there.
CHA boosters:
tokendb.com/stat-bonus/charisma/
INT boosters:
tokendb.com/stat-bonus/intelligence/
Finally, setting the limit at +10 seems to cut off future character design space at the knees. TD might eventually want to add a built-in INT or CHA damage modifier to character cards like STR does today, but if there are a long history of builds getting +10 damage from INT/CHA from these lenses it's going to be hard to do that because of the double dipping that would result.