Calcarea silicica

Natural History.
      Silicate of Calcium. Ca Si2 O5.
      Trituration.

Clinical.
      Atrophy.
      Cornea, ulcer of.
      Scrofula.
      Ulcers.

Characteristics.
      This preparation has been used by Ussher (H. W., xxxiv. 491) in the Ix and 6x potencies in cases of atrophy of children.
      He has found it succeed where Silica has failed in these cases and in corneal affections.
      It causes absorption of corneal exudations.
      Ulcers with punched-out edges indicate it.

Relations.
      Compare: Fl-ac., Lapis alb.