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Interlower and postlower eyelid retractor fat pads: a cadaveric microscopic study
Jacqueline T Mupas-Uy1, Yasuhiro Takahashi1, Takashi Nakano2
1Department of Oculoplastic, Orbital and Lacrimal Surgery, Aichi Medical University Hospital, Nagakute, Aichi, Japan.
The British Journal of Ophthalmology
|October 4, 2017
Summary
This study identifies novel inter-lower eyelid retractor (LER) and post-LER fat pads in lower eyelid anatomy. Understanding these fat layers enhances surgical knowledge of the lower eyelid.
Area of Science:
- Ophthalmology
- Anatomy
- Histology
Background:
- The precise histological anatomy of the lower eyelid retractor (LER) fat pads is not fully elucidated.
- Existing anatomical descriptions may not encompass all fat compartments within the lower eyelid.
Purpose of the Study:
- To detail the histological microscopic anatomy of the inter-LER and post-LER fat pads.
- To provide novel anatomical insights into the lower eyelid structure.
Main Methods:
- Microscopic examination of 31 Japanese cadaver orbits.
- Histological analysis using Masson trichrome staining on sagittal sections.
- Focused examination of lower eyelid tissues.
Main Results:
- The inter-LER fat pad was identified in 80.6% of specimens, located between anterior and posterior LER layers.
- The post-LER fat pad was found in 22.6% of specimens, situated between the posterior LER layer and conjunctiva.
- Vascularization within the inter-LER fat pad was observed in 72.0% of relevant specimens.
Conclusions:
- This research reports the novel histological existence of the inter-LER and post-LER fat pads.
- Awareness of these distinct fat pads offers surgeons enhanced anatomical detail for lower eyelid procedures.
- The findings contribute to a more comprehensive understanding of lower eyelid microanatomy.
