Modified Cruciate Technique In Fibrotic Posterior Capsule Opacification: Peripheral Tension Release Maneuver

In Nd:YAG laser capsulotomy, the cruciate pattern is often preferred due to its low energy requirement and reduced risk of floaters. However, in fibrotic posterior capsule opacification (PCO), the capsule loses elasticity, making it difficult for the flaps to fold back (flop out). Persistent central shots to achieve an opening increase the risk of intraocular lens (IOL) pitting. This case report aims to introduce a modified "peripheral tension release" technique that breaks capsular resistance and achieves full opening by applying shots to the peripheral legs of the cruciate pattern, without risking the central area in rigid PCO cases.

This study is a clinical case report of a single patient presenting with late-onset visual impairment after cataract surgery, diagnosed with severe fibrotic posterior capsule opacification on slit-lamp examination. The procedure was performed by a single surgeon using an Nd:YAG laser device under topical anesthesia in an outpatient clinic setting.

Nd:YAG laser capsulotomy was planned for a patient with a history of cataract surgery and decreased vision due to dense fibrotic PCO. The procedure began with a standard cruciate pattern. Although the capsule was cut crosswise with laser shots, mechanical tension was insufficient due to the fibrotic structure, and the flaps did not fold outside the visual axis. Additional central shots were avoided because they carried the risk of creating permanent pitting on the IOL. Instead, a "peripheral tension release" maneuver was initiated. Based on the interactive technique and capsular mechanics principles described by Zhuravlyov, strategic single shots were applied to the peripheral legs (endpoints) of the cross pattern. These shots instantly broke the resistance lines of the fibrotic capsule, ensuring rapid peripheral retraction of the flaps and creating a clear central optical opening. No pitting was observed on the IOL in the central area during or after the procedure. The expected increase in visual acuity was safely achieved. With this method, the procedure was completed with much lower total energy without switching to modified circular techniques, which are known to require high energy in the literature.

In rigid and fibrotic PCO cases, applying additional central shots when the standard cruciate pattern is insufficient increases the risk of IOL damage. Instead, tension release shots applied to the peripheral legs of the cruciate pattern safely break capsule resistance and provide optical clearance. This maneuver protects the IOL by avoiding the high-energy load of circular techniques and offers an effective and efficient solution.