Meyer-Rochow V B, Walsh S
Cell Tissue Res. 1977 Oct 21;184(1):87-101. doi: 10.1007/BF00220529.
The eye of the deep-sea penaeid shrimp Gennadas consists of approximately 700 square ommatidia with a side length of 15 micrometer. It is hemispherical in shape and is located at the end of a 1.5 mm long eye stalk. The cornea is extremely thin, but the crystalline cone is well-developed. A clear zone between dioptric structures and the rhabdom layer is absent. A few pigment granules are found within the basement membrane; otherwise they, too, are absent from the eye of Gennadas. The rhabdom is massive and occupies 50% of the eye. It consists of orthogonally oriented microvilli (the latter measuring 0.07 micrometer in diameter) and is 75 micrometer long. In cross sections adjacent rhabdoms, all approximately 8 micrometer in diameter, form an almost continuous sheet and leave little space for retinula cell cytoplasm. In spite of a one h exposure to light, rhabdom microvilli show no disintegration or disruption of membranes. Vesicles of various kinds, however, are present in all seven retinula cells near the basement membrane. Bundles of seven axons penetrate the basement membrane. On their way to the lamina they often combine and form larger aggregations.
深海对虾Gennadas的眼睛由大约700个边长为15微米的方形小眼组成。它呈半球形，位于1.5毫米长的眼柄末端。角膜极薄，但晶锥发育良好。屈光结构和视杆层之间没有清晰区域。在基膜内发现有一些色素颗粒；否则，在Gennadas的眼睛中也不存在这些颗粒。视杆很大，占眼睛的50%。它由正交排列的微绒毛（后者直径为0.07微米）组成，长75微米。在相邻视杆的横切面上，所有视杆直径约8微米，形成几乎连续的薄片，为小网膜细胞细胞质留下的空间很小。尽管暴露在光线下1小时，视杆微绒毛并未显示出膜的解体或破坏。然而，在基膜附近的所有七个小网膜细胞中都存在各种囊泡。七束轴突穿透基膜。在它们通向神经层的途中，它们经常合并并形成更大的聚集体。
