Inferior oblique muscle recession

Area of Science:

• Ophthalmology
• Surgical Anatomy

Background:

• Inferior oblique muscle (IOM) recession is a common strabismus surgery.
• Accurate surgical landmarks are crucial for effective IOM recession.

Purpose of the Study:

• To identify a simpler and more reliable landmark for inferior oblique muscle recession.
• To provide precise anatomical measurements for optimal surgical targeting.

Main Methods:

• Anatomical measurements were performed on 200 autopsy eyes.
• The distance from the Fink technique's 8-mm recession site to the inferior rectus muscle (IRM) insertion was measured.
• Two specific measurement techniques relative to the IRM insertion were evaluated.

Main Results:

• The inferior rectus muscle insertion serves as a simpler landmark compared to other muscles.
• Specific measurements (4.0 mm posterior, 4.4 mm superior to IRM lateral border) facilitate accurate IOM recession.
• Alternative measurements (2.9 mm superior, 5.1 mm posterior to IRM lateral border) were also defined.

Conclusions:

• Utilizing the inferior rectus muscle insertion simplifies inferior oblique muscle recession surgery.
• The provided anatomical measurements enhance the precision of the Fink technique for IOM recession.