Mage Hand appears as a spectral, floating hand.

The spell can do very little in combat. The spell explicitly lists a few things it can do which involve manipulating objects. It also explicitly disallows several things, such as attacking or using magic items. It is not meant to be used in combat.

Only Arcane Tricksters can really take advantage of using Mage Hand in combat. What you are asking to do (blinding the enemy) is basically the 13th level ability of an Arcane Trickster and should not be given away for free to anyone with the cantrip.

Mage Hand appears as a spectral, floating hand.

The spell can do very little in combat. The spell explicitly lists a few things it can do which involve manipulating objects. It also explicitly disallows several things, such as attacking or using magic items. It is not meant to be used in combat.

Only Arcane Tricksters can really take advantage of using Mage Hand in combat. What you are asking to do (blinding the enemy) is basically the 13th level ability of an Arcane Trickster and should not be given away for free to anyone with the cantrip. And even in such a case, an Arcane Trickster can only use Mage Hand to get advantage (for yourself only), not to impose a condition like Blinded.