re·fract 
(rĭ-frăkt)
(rĭ-frăkt)tr.v. re·fract·ed, re·fract·ing, re·fracts
1. To deflect (light, for example) from a straight path by refraction.
2. To alter by viewing through a medium: "In the Quartet reality is refracted through a variety of eyes" (Elizabeth Kastor).
3. Medicine To determine the refraction of (an eye, for example).
[Latin refringere, refrāct-, to break up : re-, re- + frangere, to break; see bhreg- in the Appendix of Indo-European roots.]