Preheat oven to 350°F (175°C) and prepare a loaf pan by greasing and lining it with parchment paper.
In a medium bowl, whisk together the flour, baking powder, and salt.
In a separate bowl, whisk eggs and sugar until light and slightly fluffy.
Add milk, melted butter (or oil), lemon juice, and lemon zest to the egg mixture and mix well.
Gradually add the dry ingredients into the wet ingredients and stir gently until just combined, avoiding overmixing.
Carefully fold the floured blueberries into the batter.
Pour the batter into the prepared loaf pan and smooth the top.
Bake for 45 to 50 minutes, or until a toothpick inserted into the center comes out clean.
Allow the loaf to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
For an optional lemon glaze, mix powdered sugar with lemon juice and drizzle over the cooled loaf.