So I went shopping for one. I found an open eye needle called the calyx needle - it has an opening at the top.

我就去买了，找到一种叫做花苞针的，在顶上有个开口。

youdao

The only difficult part was threading the cotton through the eye of the needle!

唯一困难的部分是将棉线穿过针眼！

《柯林斯英汉双解大词典》

The needle-eye is too small to hold the thread.

针眼太小线穿不进去。

《新英汉大辞典》

From the valley below, each pier and mast merge to look like a single needle with an elongated eye: Foster's drawings, in fact, depict a thread piercing the eye of a needle.

WSJ: A Concrete Ribbon Through the Clouds | Millau Viaduct | Masterpiece by Joseph Giovannini

WSJ's Gautam Naik reports these micro-sculptures are small enough to fit inside the eye of a needle.

WSJ: AHEAD OF THE TAPE: Family Dollar Still Has Some Buying Points

It is easier for a camel to pass through the eye of a needle than for a rich man to enter the Kingdom of Heaven.

BBC: Number free facts