ROD AND CONE VISION IN RETINITIS PIGMENTOSA
ROD AND CONE VISION IN RETINITIS PIGMENTOSA
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DOI:
10.1016/0002-9394(56)90377-4
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发表时间:
1956-01-01
影响因子:
4.2
通讯作者:
WALD, G
中科院分区:
文献类型:
--
作者:
ZEAVIN, BH;WALD, G
Fig. 1 (Zeavin and Wald). Diagram of the perimetric adaptometer.(Left) An adjustable stand holds a large, revolvable aluminum disc, slotted to coincide with a similar slot in the carrying arm, through which pass the hose from the pneumatic cable release and wires from the test and fixation lamps. The fixation lamp is held just far enough in front of the disc to allow the lamp housing to be brought directly behind for making foveal measure ments. A counterweight attached to the carrying arm balances the weight of the lamp housing.(Up per right) Simplified diagram of the electric circuit. The part enclosed in the control box is drawn within the rectangle and up to the three-pronged plug, while the part joined to the test unit is on the other side of the plug. After passing through a six-volt transformer and supplying a red light by which the operator works, it leads to two rheostats in series with the fixation and test lights, providing for sepa rated control of their brightnesses.(Lower right) Enlarged sagittal section of the lamp housing.