Micropunch for 'buttonhole' anterior capsulotomy in endointercapsular cataract surgery

Area of Science:

• Ophthalmology
• Surgical Technology
• Biomedical Engineering

Background:

• Cataract surgery often involves creating an anterior capsulotomy.
• Linear capsulotomies can be prone to enlargement due to tearing.
• Stress concentration at the edges of the capsulotomy can lead to complications.

Purpose of the Study:

• To introduce a micropunch device for anterior capsule removal.
• To present a technique for preventing capsulotomy enlargement in cataract surgery.
• To enhance the safety and precision of endointercapsular cataract procedures.

Main Methods:

• A micropunch instrument was utilized to excise a 500-micron round piece of the anterior capsule.
• The technique involves excising the anterior capsule at both ends of the capsulotomy.
• This creates a continuous, round, and smooth-edged margin.

Main Results:

• The micropunch effectively removes a precise, round section of the anterior capsule.
• The smooth, continuous margin significantly reduces stress concentration.
• The technique prevents the enlargement of the linear anterior capsulotomy by tearing.

Conclusions:

• The described micropunch and technique offer a method to prevent anterior capsulotomy tearing.
• This innovation can improve the stability of the capsulorhexis during cataract surgery.
• It contributes to enhanced safety and predictability in endointercapsular cataract procedures.