J Korean Ophthalmol Soc.  2023 Jul;64(7):598-604. 10.3341/jkos.2023.64.7.598.

Modified Rectangular Loop Suture for Refractory Pupillary Optic Capture of Scleral Fixated Intraocular Lens

• Hwang SS
• Kwon JM
• Bang JW
• Kim HW
• Pak KY

• KMID: 2544302
• DOI: http://doi.org/10.3341/jkos.2023.64.7.598

Abstract

Purpose
To report a modified rectangular loop suture technique for patients with refractory pupillary optic capture after intraocular lens scleral fixation.
Methods
A modified rectangular loop suture was performed in four patients with persistent pupillary capture despite medication and laser iridotomy. A loop suture pattern was designed in the two quadrants without the scleral fixation knot. A 2 mm loop suture point was marked 2 mm away from the corneal limbus. The suture point was similarly marked in the opposite quadrants. Small conjunctival incisions were made at a marked point and a non-absorbable 10-0 prolene long needle was passed. The needle was inserted at the 1 o’clock position through the conjunctival incision and passed between the intraocular lens and the iris plane. Then it was withdrawn using a 26-gauge (G) syringe from the 8 o’clock position in the opposite quadrant. Similarly, the needle was passed from the 7 o’clock position under the conjunctiva, and pulled out of the sclera at the 2 o’clock position. It was then passed to the 1 o’clock position under the conjunctiva and a knot was made and buried. The operation was completed without closure of the conjunctival incision.
Results
In all four eyes, pupillary optic capture was corrected and remained stable without recurrence for an average of 7.25 months.
Conclusions
The modified rectangular loop suture may be useful for refractory pupillary capture cases. The procedure is relatively simple and minimizes scleral exposure to the conjunctival suture. It is expected that this may reduce patient discomfort.

Keyword

Intraocular lens scleral fixation, Modified rectangular loop suture, Pupillary optic capture