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M. Kim, H.S. Sa, S.E. Park, S.Y. Oh; The Structural Differences of Proprioceptor in Extraocular Muscle Between Normal and Strabismic Eye . Invest. Ophthalmol. Vis. Sci. 2005;46(13):5725.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To compare the structural characteristics of extraocular muscle proprioceptor in strabismic eyes in adults and infantile strabismic eyes, and nystagmic eyes with normal cadevaric eye. Methods: The specimens obtained from patients suffering from subjects with strabismus (22 adults and 10 children) and nystagmus (3 subjects) were studied and compared with specimen obtained form normal cadevaric donor. The specimens were treated with Silver stain, Masson's trichrome stain and H&E stain. The characteristics of proprioceptor were evaluated under light microscope and electron microscope. Results:The number of proprioceptor was 5.5 in normal eye, 0.5 in infantile strabismic eyes, 5.2 in strabismic eyes in adult, and 0.3 in nystagmic eyes. There were no remarkable difference in strabismic eyes in adult and normal eye. In eyes with nystagmus the number of nerve ending was decreased and loss of intracellular architecture, degenerative segmentation, vacuolarization in Schwann cell was noted. In infantile strabismic eyes significant atrophic change of axon and loss of cellular skeletal structure was noted. Conclusions: The number of proprioceptors in infantile strabismic eyes and nystagmic eyes is smaller than that in normal eye and strabismic eyes in adults. Structural change was also noted in infantile strabismic eyes and nystagmic eyes.
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