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Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model
Published on: April 3, 2016
Biomechanical considerations: evaluating scleral reinforcement materials for pathological myopia
Zhipeng Yan1, Chaoying Wang, Weiyi Chen
1Department of Ophthalmology, the Third Hospital of Hebei Medical University, Shijiazuang, China.
Summary
Artificial pericardium and human sclera significantly improved scleral elasticity in rabbits, offering promising options for pathological myopia treatment. All-dermal matrix did not show significant biomechanical enhancement.
Area of Science:
- Ophthalmology
- Biomaterials Science
- Biomechanics
Background:
- Progressive myopia is linked to scleral biomechanical weakness and thinness.
- Posterior scleral reinforcement surgery is a rational treatment for pathological myopia.
Purpose of the Study:
- To evaluate the biomechanical properties of artificial pericardium, human sclera, and all-dermal matrix for scleral reinforcement.
- To identify the ideal material for reinforcing pathological sclera.
Main Methods:
- An experimental study involving 45 adult Japanese white rabbits divided into three groups.
- Surgical implantation of one material type in each group's posterior sclera.
- Assessment of elasticity modulus after 10 months, comparing reinforced sclera to controls using t-tests (p < 0.05).
Main Results:
- Rabbit sclera reinforced with artificial pericardium or human sclera demonstrated significantly increased elasticity modulus compared to controls.
- No significant difference in elasticity modulus was observed in sclera reinforced with all-dermal matrix.
Conclusions:
- Biomechanical analysis of scleral reinforcement materials aids in selecting optimal treatments for myopia.
- Artificial pericardium and human sclera exhibit superior biomechanical characteristics for scleral reinforcement.
