Rigid gas permeable lenses are usually the lenses of choice after RK. They provide good visual acuity and tear exchange, they move well upon the cornea, and they allow high oxygen transmissibility ...

Corneal topography is an indispensable tool and plays a critical role in the practice of refractive surgery. In corneal refractive surgery, corneal topography is used preoperatively to detect ...

The exclusion criteria were corneal opacity, previous radial keratotomy or other corneal surgery, previous anterior or posterior chamber surgery, vitrectomy, laser iridotomy, diabetic retinopathy, ...

This reduces the risk of high post-PKP astigmatism and allows for selective suture removal and astigmatic keratotomy to reduce any residual astigmatism. The advantage is, performing the two procedures ...