|
|||
|
|
|||
|
|
|||
|
Stenopeic
(slit)
lorgnette for eye refraction exam |
|||
|
|
|
There is no
consensus on who developed the slit lorgnette. It is used for
determining the axis of astigmatism in the course of a refraction. There is a slot for a corrective lens. There are three different slits of various widths. There are several small holes to narrow the central bundle of rays. |
|
|
|||
Search this Site |
|||
