Table 1.

Rolando's Classification for Tear Ferning.

Classification	Descriptions
Type 1	Uniform arborisation in the entire field of observation without spaces between the ferns. Single ferns are big and closely branched.
Type 2	Arborisation is abundant, but the single ferns are smaller and have a lower frequency of branching than in grade 1; empty spaces appear between the ferns.
Type 3	Single ferns are little and incompletely formed with rare or no branching.
Type 4	No ferning is present; mucus may appear in clusters and threads.