Ptosis and cataract surgery. A multivariant computer analysis of a prospective study

Area of Science:

• Ophthalmology
• Surgical Techniques
• Ptosis Research

Background:

• Postoperative ptosis is a common concern following ophthalmic surgery.
• Understanding the etiological factors, including local anesthesia and surgical trauma, is crucial for prevention.
• Pre-existing ptosis and anatomical landmarks in the elderly may influence outcomes.

Purpose of the Study:

• To investigate the impact of local anesthesia techniques and superior rectus muscle manipulation on the incidence of postoperative ptosis.
• To compare the efficacy of different anesthetic blocks (Van Lint vs. Nadbath) and suture methods (bridle vs. episcleral retraction) in preventing ptosis.
• To determine the role of preoperative ptosis and specific anatomical features in postoperative outcomes.

Main Methods:

• A prospective randomized study involving four groups of patients undergoing ophthalmic procedures.
• Group A: Van Lint block + superior rectus bridle suture.
• Group B: Van Lint block + episcleral retraction suture.
• Group C: Nadbath retroauricular facial nerve block + superior rectus bridle suture.
• Group D: Nadbath block + episcleral retraction suture.

Main Results:

• Significant reduction in postoperative ptosis was achieved by modifying operative techniques.
• Group A experienced a significant increase in postoperative ptosis, while Group D showed a significant reduction.
• Trauma to the superior rectus muscle complex was identified as the most critical factor contributing to postoperative ptosis.
• Preoperative ptosis did not affect postoperative ptosis outcomes.
• Anatomical landmarks like lid crease and lash rotation were unreliable indicators of levator insertion in the elderly.

Conclusions:

• Surgical technique modifications can significantly reduce postoperative ptosis.
• Minimizing trauma to the superior rectus muscle complex is paramount in preventing ptosis.
• The choice of anesthetic block and suture technique influences the likelihood of developing postoperative ptosis.