1 Large display range for pupil distance scale
![](https://cdn.shopifycdn.net/s/files/1/0561/6654/7652/files/1_0c13b6e6-d876-4e5c-b170-167345c13603_480x480.png?v=1666162210)
2 Easy Locking with Proximity Rod
The columnar shape gives the VT-50 a more appealing aesthetic, while allowing you to lock the torque with less effort. Our phoropter is easy to lock with the proximity rod.
![](https://cdn.shopifycdn.net/s/files/1/0561/6654/7652/files/2_b9c918ed-0ecf-4e47-b705-ff638d851787_480x480.png?v=1666162330)
3 Get more accurate measurements of astigmatism and axis position.
VT-50 Get more accurate measurements of astigmatism and axis position.
![](https://cdn.shopifycdn.net/s/files/1/0561/6654/7652/files/3_5e0cd48f-287e-4582-91f9-3cf31a2cd4e3_480x480.png?v=1666162412)
4 Prismatic paddle wheel is more convenient to turn. VT-50 prismatic paddle wheel has no sharp edges to cut your fingers.
There is a large spacing between the prism and the crossed prism,
which gives room for your hand to fit and turn the wheel with ease.
![](https://cdn.shopifycdn.net/s/files/1/0561/6654/7652/files/4_6913820e-0939-4200-b8cf-d857b1697794_480x480.png?v=1666162692)
5 Attention to detail increases refraction accuracy
The VT-50 has threads on the inner wall of the aperture hole to prevent reflection and increase refraction accuracy
![](https://cdn.shopifycdn.net/s/files/1/0561/6654/7652/files/5_ee5cfad1-61ec-4b9b-98fe-b0433ba75d11_480x480.png?v=1666162751)
6 The key gears of the exterior mirror are copper
The key gear components of the VT-50 exterior mirror are metal copper, and the other plants are plastic or steel.
![](https://cdn.shopifycdn.net/s/files/1/0561/6654/7652/files/7_1210f40e-84a0-441c-a7c4-d1f2e4fae924_480x480.png?v=1666163875)
7 Backshell gear parts made of metal.
VT-50 backshells with all metal parts and pure copper for key gear components.
Other factories use plastic and stainless steel parts.
![](https://cdn.shopifycdn.net/s/files/1/0561/6654/7652/files/8_1db3c859-2ee5-4ccd-a729-9017dd122ea3_480x480.png?v=1666163943)
8 Cross-frame section with brass fittings
VT-50 cross frame part is made of pure brass fittings, other factories use iron fittings with painted appearance.
The VT-50 pupil distance phoroptor rotates one turn and the pupil distance mark moves a distance of 6mm, the other pupil distance phoroptor rotate one turn and the pupil distance mark moves a distance of 2mm.
![](https://cdn.shopifycdn.net/s/files/1/0561/6654/7652/files/6_8ebd4111-714c-432c-9402-713febc5a157_480x480.png?v=1666164156)