Introduction:

Radial keratotomy (RK) was a popular refractive surgery performed in the past to correct myopia. However, with advancements in laser refractive procedures like LASIK, RK has become less common. Individuals who have previously undergone RK may experience cataract formation as they age, requiring cataract surgery. Cataract surgery following RK requires special considerations due to the altered corneal shape and potential refractive changes. This article aims to provide a comprehensive understanding of cataract surgery following RK, including preoperative assessments, surgical techniques, and postoperative care.

Preoperative Assessments:

Before performing cataract surgery on individuals who have had RK, several factors need to be carefully assessed:

• Corneal Stability: The stability of the cornea after RK should be evaluated to ensure that it can support cataract surgery. The surgeon needs to determine if any significant corneal irregularities exist that could affect postoperative visual outcomes.
• Visual Symptoms: The patient's visual symptoms and complaints, including any changes in vision since the RK procedure, should be assessed to determine the timing and necessity of cataract surgery.
• Refractive Changes: The refractive status of the eye following RK should be measured accurately to guide IOL power calculations for the cataract surgery.
• Keratometry Readings: Accurate keratometry readings are essential for selecting the appropriate IOL and managing astigmatism.

Surgical Techniques:

Cataract surgery following RK may require specialized surgical techniques to optimize visual outcomes:

• IOL Selection: Due to the altered corneal shape and potential residual refractive changes after RK, the choice of intraocular lens (IOL) requires careful consideration. Toric IOLs may be used to address astigmatism if present.
• Astigmatism Management: If significant astigmatism persists after RK, the surgeon may perform limbal relaxing incisions or consider femtosecond laser-assisted arcuate incisions during cataract surgery to correct astigmatism.
• Monovision Correction: Some patients who underwent monovision RK in the past may prefer to maintain this correction after cataract surgery. The surgeon can discuss the possibility of monovision with the patient.

Postoperative Care:

Postoperative care is crucial for optimizing visual outcomes and managing any residual refractive changes:

• Refractive Stability: The refractive status of the eye should be monitored postoperatively to ensure refractive stability.
• Visual Rehabilitation: Visual rehabilitation may involve the use of glasses or contact lenses, especially if there are any residual refractive errors or astigmatism.
• Patient Education: Patients should be informed about the potential for refractive changes after cataract surgery following RK and be aware of their visual expectations.

Conclusion:

Cataract surgery following radial keratotomy requires careful preoperative assessments, specialized surgical techniques, and close postoperative monitoring to optimize visual outcomes. With appropriate planning and consideration of refractive changes, cataract surgery can significantly improve vision and quality of life for individuals who have undergone RK.

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