Suture-related problems in PK

Postoperative problems related to sutures that may necessitate removal include

- Excessive tightness - producing an irregular astigmatism
- Loosening (usually as a result of wound contraction; suture breakage; resolution of wound edema; or suture migration through the corneal tissue, referred to as cheese-wiring)
- Broken interrupted or continuous suture
- Infectious abscesses (usually localized around loose, broken, or exposed sutures
- Noninfectious (toxic) suture infiltrates, often multiple and in areas of the pannus, or extension of sutures beyond the limbus
- Vascularization along suture tracks

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Image from Rajan Eye Care Hospital

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