Related Experiment Video
Updated: Jan 31, 2026

Laparoscopic Anatomic S7+S8d Resection Preserving Inferior Right Hepatic Vein and S6 with Right Hepatic Vein Transection
Published on: December 30, 2025
Combined pentagonal resection and inferior retractor plication in involutional entropion
Janice J C Cheung1,2, Carlos K H Wong3, Leanne T Y Cheung4
1Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong, Special Administrative Region of China. janicejccheung@yahoo.com.hk.
Background:
To describe the effectiveness of combined pentagonal resection and inferior retractor plication (PR + IRP) based on the Hill's procedure for the treatment of primary involutional lower eyelid entropion in the Chinese population.
Methods:
This is a retrospective review of 52 eyelids of 46 patients who underwent PR + IRP for treatment of involutional entropion between May 2009 and May 2017. Patient demographics, presence of pre-operative laxity, post-operative outcome and presence of complications were all recorded from electronic patient records.
Results:
A total of 52 eyelids of 46 patients received PR + IRP. None had recurrence of entropion, 1 (2.1%) had residual entropion, 2 eyelids (4.4%) had lower eyelid notching, 1 eyelid (2.2%) had infection and 1 eyelid (2.2%) had overcorrection. The overall success rate was 90.4%.
Conclusion:
Combined PR + IRP is an effective surgical procedure for primary involutional entropion with low recurrence rate. However, it may carry risk of eyelid notching post-operatively.
Related Concept Videos
Impedance Combination
Combination Of Resistors
Combining Functions
Stresses under Combined Loadings
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
Combined Effects of Drugs: Synergism
Such synergistic combinations...

