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Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
Published on: May 12, 2011
Surgical approach to the superior mid-orbit.
Dag Krohn-Hansen1, Bjørn Nicolaissen, Torstein R Meling
1Department of Ophthalmology, Oslo University Hospital, Oslo, Norway. dag.krohn-hansen@ous-hf.no
Journal of Plastic Surgery and Hand Surgery
|February 28, 2013
Summary
This study identifies a safe surgical corridor to the upper eyelid levator muscle and mid-orbit structures. The orbital septum provides a natural plane, protecting tissues during ptosis repair and lesion removal.
Area of Science:
- Ophthalmology
- Anatomy
- Surgical Anatomy
Background:
- Accessing the superior mid-orbit is crucial for eyelid ptosis correction and local lesion removal.
- Current surgical approaches may risk damaging the orbital septum and retroseptal fat.
Purpose of the Study:
- To define the anatomical basis for a minimally invasive surgical approach to the levator muscle and upper mid-orbit.
- To identify a surgical corridor that avoids harm to the orbital septum and retroseptal fat.
Main Methods:
- Macro-anatomical dissections of five human orbits.
- Histological examinations of human cadaveric specimens.
Main Results:
- The orbital septum extends posteriorly from its junction with the levator aponeurosis.
- A distinct dissection space exists between the orbital septum and the levator muscle.
- This space offers a minimally invasive corridor to upper mid-orbit structures.
Conclusions:
- A safe, minimally invasive surgical corridor to the levator muscle and upper mid-orbit structures has been identified.
- This approach preserves the integrity of the orbital septum and retroseptal fat.
- This anatomical understanding can improve surgical outcomes for eyelid and mid-orbit procedures.
