## Vertex distance calculator:

Vertex distance calculator for spherical lens

Vertex distance calculator for toric lens

**Radius of curvature and focal power calculator**:

**Sagittal depth / Central thickness / Edge thickness calculator:**

Sagittal depth, Central thickness, Edge thickness calculator

**Corneal Radius of curvature to Corneal Dioptric power calculator:**

Corneal Radius of Curvature to Corneal Dioptric power calculator