The teleost species Notopterus notopterus (Pallas) possess bundled photoreceptors in their retina. It was found that the margin of the inner portion (the vitreal half) of photoreceptor bundles emits thin processes. Each process terminates on the contralateral photoreceptor bundle, or the processes from adjacent photoreceptor bundle may fuse. The site of the inner half of the photoreceptor bundles from where they arise shows minimal support of the photoreceptor bundles by retinal pigment epithelium, and so it is likely that those accessory structures may aid to hold the photoreceptor bundles in correct orientation.

中文翻译：

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附属结构源自硬骨Notopterus notopterus（Pallas）视网膜中的感光细胞束。

硬骨鱼类Notopterus notopterus（Pallas）在其视网膜中具有捆绑的感光细胞。发现感光体束的内部（玻璃体的一半）的边缘发出薄的过程。每个过程都在对侧感光体束上终止，或者来自相邻感光体束的过程可能融合。感光体束的产生的一半内部位置表明视网膜色素上皮对感光体束的支撑最小，因此这些辅助结构可能有助于将感光体束保持正确的方向。