Volk 20D BIO Lens 
46° / 60° field of view
3.13x image magnification
0.32x laser spot magnification
50 mm working distance
Volk 78D Slit Lamp Lens
81° / 97° field of view
0.93x image magnification
1.08x laser spot magnification
8 mm working distance
Volk 90D Slit Lamp Lens
74° / 89° field of view
0.76x image magnification
1.32x laser spot magnification
7 mm working distance
Volk SuperField Slit Lamp Lens
95° / 116° field of view
0.76x image magnification
1.32x laser spot magnification
7 mm working distance
Volk Digital Series Wide Field® Lens
103° / 124° field of view
0.72x image magnification
1.39x laser spot magnification
4-5 mm working distance
Looking for a starter lens? The Volk 20D and 78D lenses are our industry-standard lenses, perfect for general diagnostic exams. For pan-retinal exams, try our 90D lens or upgrade to the newest edition with our Digital Series Wide Field Lens for high-resolution imaging. Looking to broaden your views? Add on the Superfield lens for an even greater field of view, enabling both posterior pole and pan-retinal examinations.