Alpins N, Stamatelatos G (April 2007). "Custom-made photoastigmatic refractive keratectomy working with mixed topographic and refractive facts for myopia and astigmatism in eyes with forme fruste and mild keratoconus". Rays of light can bend if they pass through drinking water or possibly a cornea such as the apparent front floor https://wekurehealth.com/rhinoplasty/