Reproduction of David Maurice web site at Columbia | [ DavidMaurice.org home page ] |
SUMMARY: |
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PROPERTY | INFERENCE |
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Fine fibrils Fibrillar order: Interfibrillar forces. Interfibrillar forces. Not interwoven: Lamellar structure. Not interwoven: Lamellar structure. |
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Slide 1. Cross-section of beef cornea observed under polarizing microscope. About 70 lamellae. | |
Slide 2. Low power TEM of beef stroma, showing 3-400 lamellae.
In human, Bowman describes 60 lamellae by histology, but Pouliquen et al. 307 lamellae by TEM. |
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Slide 3. Small piece of stroma lying flat at bottom of cuvette under saline, and observed by slit lamp. Slit vertical, i.e., perpendicular to plane of cornea. | |
Slide 4. Striated appearance of very swollen stroma viewed in slit lamp as in Slide 3. |
Slide 5. Showing how cohesive structures in stroma must be stretched to several times their length by swelling and even more by shear. | |
Slide 6. Method of marking stroma to demonstrate shear. |
Slide 7.
Left, unstressed. Right, maximal shear. |
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Slide 8.
Left, unstressed. Right, maximal shear. Tissue shows greater freedom of movement as hydration increases. |
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Slide 9.
Left, unstressed. Right, maximal shear. Tissue stiffening again near maximum hydration |
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Slide 10. Thick cross-section of swollen stroma crushed perpendicular
to face of section, showing further (irreversible) extension of structure.
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REFERENCES: |
Bowman |
Pouliquen et al. |
Reproduction of David Maurice web site at Columbia | [ DavidMaurice.org home page ] |