Intraoperative capsular marking for toric intraocular lens placement.
Harinder Singh Sethi1, Mayuresh P Naik2
1Department of Ophthalmology, VMMC and Safdarjung Hospital, New Delhi, India.
Taiwan Journal of Ophthalmology
|January 13, 2021
Summary
This study details a surgical technique for marking the limbus and anterior lens capsule to accurately orient toric intraocular lenses (IOLs). Precise toric IOL alignment is crucial for correcting astigmatism during cataract surgery.
Area of Science:
- Ophthalmology
- Surgical Techniques
Background:
- Astigmatism correction is a key goal in modern cataract surgery.
- Accurate toric intraocular lens (IOL) implantation is essential for achieving desired refractive outcomes.
Purpose of the Study:
- To describe a standardized method for marking the limbus and anterior lens capsule for toric IOL alignment.
- To ensure precise rotational placement of toric IOLs based on the steeper astigmatic meridian.
Main Methods:
- Preoperative marking of 0° and 180° limbal points using proparacaine and Gentian violet.
- Intraoperative marking of the steeper astigmatic meridian with a Mendez Ring if necessary.
- Anterior lens capsule marking using a bent 26G needle or micro-vitreoretinal scissors.
- Rotation of the toric IOL to the intended meridian before viscoelastic aspiration.
Main Results:
- The described technique allows for accurate identification and marking of ocular meridians.
- Facilitates precise rotational alignment of both customized and non-customized toric IOLs.
- Ensures the toric IOL is positioned in the correct astigmatic meridian for effective correction.
Conclusions:
- This marking method provides a reliable approach for toric IOL alignment in cataract surgery.
- Accurate toric IOL placement using these markings can optimize visual outcomes and astigmatism correction.
