My older brother was at the optician shop trying on different eyeglasses. He choose a strange model that was non shiny gold but had a weird triangular shape. It doesn't even make sense as glasses. I told him they weren't good because to me they looked childish. He kept trying other models but didn't like them.
Brother = A part of yourself connected to him (older, authority, decisions).
Glasses = How you see things, perspective, or outlook.
Weird gold triangle glasses = An odd or immature way of seeing things, not practical.
You said they looked childish = You reject that way of looking at life.
He kept trying others but didn’t like them = Struggling to find the “right” perspective, nothing feels like it fits.
The dream shows indecision about how to view or approach a situation or life in general, Some part of You is rejecting some options as immature, but still not finding a perspective that feels right.
Perhaps you should look deeper into why you don't value the quirky uniqueness of childish curiousity and perspective, some times being outside of the box is really what the mind needs to expand on life and thoughts.
It's interesting that your mind uses your sibling to personify this, maybe it's because you perceive them as having those traits or that you grew up together and so you relate, or perhaps its a view of missing those feelings in the bond you have.
The deeper you look into the symbols of the dream and the meanings each one has, the more your gain from it.
Like triangles and there 3 points it could be you've reach problem with this person that had 3 pointed decisions to be made, snd that in those choices that they made they weren't very practical, but not that you never mentioned they didn't suit them but that it was simply immature.
Dreams get deeper the longer you thing about them.
Was there any feelings related to the dream you recall?