Der Strahlenkörper (Corpus ciliare)

Kolmer, W.; Lauber, Hans

doi:10.1007/978-3-662-21655-2_5

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Already starting in the second half of the 19th century, anatomists such as Iwanoff, Brücke, Müller and others reported about the light microscopic features of the ciliary body including its differentiation into a circular muscle as its inner part (named after Müller), an intermediate, radial/reticular portion (named after Iwanoff), and a meridional or longitudinal portion (Fuchs, 1928; Herzog, 1902; Iwanoff & Arnold, 1874; Lauber, 1936; Rohen, 1956; Salzmann, 1912; Seefelder & Wolfrum, 1906; van der Zypen, 1970). As described by and named after Brücke, this longitudinal part (“LPCM”) originated at the scleral spur and ended posteriorly in the pars plana/ora serrata region (Fuchs, 1928; Herzog, 1902; Iwanoff & Arnold, 1874; Lauber, 1936; Mao et al, 2018; Rohen, 1956; Salzmann, 1912; Seefelder & Wolfrum, 1906; van der Zypen, 1970). The contraction of the LPCM has been described to cause a widening of the trabecular meshwork through a backward shift of the scleral spur (Park et al, 2016; Rohen et al, 1967).…”

Section: Discussionmentioning

confidence: 99%

Bruch's membrane and Brücke's muscle in the pars plana region

Jonas

Jonas³

et al. 2023

Acta Ophthalmologica

View full text Add to dashboard Cite

PurposeTo examine Bruch's membrane (BM) in association with the longitudinal part of the ciliary muscle (LPCM) in the pars plana region.MethodsUsing light microscopy, we histomorphometrically assessed BM and the LPCM in the pars plana region.ResultsThe histomorphometric study included 51 eyes (51 patients; mean age: 60.8 ± 15.0 years; axial length: 26.0 ± 3.3 mm; range: 21.0–36.0 mm). The LPCM (total length: 4.60 ± 1.10 mm) ended 1.15 ± 0.56 mm anterior to the ora serrata. Within the pars plana region, the LPCM (length: 2.58 ± 0.98 mm) had direct contact with BM for 1.95 ± 0.99 mm (71.1 ± 18.4% of the BM undersurface), while a capillary layer was interposed between the BM and the LPCM for 0.70 ± 0.40 mm (29.0 ± 18.4%). In the pars plana region free of LPCM close to the ora serrata, the percentage of BM covered by the capillary layer was higher than in the pars plana region containing the LPCM (63.0 ± 42.1% vs. 29.0 ± 18.4%; p < 0.001). At the LPCM end, BM was in direct contact with a collagenous tissue from the LPCM and was focally thickened as compared to BM with an underlying capillary layer (9.5 ± 5.3 μm vs. 4.3 ± 1.2 μm; p < 0.001).ConclusionsThe direct contact of BM with the LPCM in the pars plana in association with focal BM thickening at the LPCM end suggests an insertion of LPCM on the BM. Taking into account the biomechanical strength of BM, it may imply a functional unit of the LPCM with BM in the process of accommodation with a secondary movement of the posterior BM and tertiary thickening of the subfoveal choroidal space.

show abstract