This report describes the elongation and rupture pattern studied on 42 tissue slices of" the fibrous coats (Cornea, Sclera and Limbus) of the fresh rabbit eye. The size of slices was 1.000±0.667 long by 0.900±0.667mm. wide. For each slice elongation was-, measured under the microscope in a magnitude of 30 X. The elongation, micron per, each 10 gram load added, was taken as an elongation ratio.
The results were as follows:
1. The shapes of elongation curve of all slices showed two different patterns between: 1st limit (20-30gm.) and 2nd limit (150-180gm.), that was markedly greater elongation ratio in lst limit than that in 2nd limit.
2. Elongation curves showed increased magnitude from central portion toward limbus in the cornea and from limbus to posterior pole in sclera.
3. Mean elongation ratio was greater in latitudinal than meridional of all slices.
4. Mean´ elongation ratio of the macular area was similar to that of the posterior portion of sclera.
5. The range of weight required to make rupturing of each slice was 150-230gm., though the slices were taken in same portion.
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