硬骨魚眼の遠近調節時の水晶体の移動方向について
1966 年 32 巻 2 号 p. 112-116
詳細
1966 年 32 巻 2 号 p. 112-116
Electrical stimulation of the excised eye of 11 marine teleosts leads us to conclude that the lens movement in accommodation is directed temporad in 9 species or dorso-temporad in 2 bottom feeders, though the movement sometimes tends to have the component toward the bottom. This component was concluded, however, to be an artifact brought about by strong contraction of the muscles in the iris, ciliary body, etc. due to a strong stimulation. The temporal movement of the lens means that the visual axis is directed forward, and dorso-temporad means lower-forward. These directions of the visual axis are consistent with the habits of the fishes. Musculus retractor lentis of carp and goldfish is very feeble, and no movement of the lens was elicited by the electrical stimulation.
