Livro de ficção científica (sem mágica, saltos no hiperespaço, protagonista cego) [duplicado]

Eu me pergunto se isso é Caminhada noturna de Bob Shaw.

Ele tem os problemas com o hiperespaço que você menciona:

In the first century of interstellar exploration Earth alone dispatched some forty million robot probes, of which less than two hundred chanced to make their way back. Of that number, exactly eight had found usable planetary systems. Not one of the handful of manned ships that accidentally made open-ended jumps was ever seen again -- on Earth, anyway. Some of them may still be going, carrying the descendants of their original crews, cosmic Flying Dutchmen glimpsed only by uncomprehending stars as their destiny of flicker-transits gradually takes them beyond the reach of human thought.

The eight successful probes of that first century established zigzagging trade lanes, which the manned ships that came afterward were very careful to follow closely. That is the other aspect of null-space travel that troubles you as you wait for the relays to act. Although it was a logical deduction from the absence of reciprocity in null-space, a few pioneers discovered the hard way that jumping from a point near A will not take you to a corresponding point near B. Get more than about two light-seconds from the established jumping-off point, the so-called portal, and you are off on your own random pilgrimage to the far side of eternity.

O protagonista Sam Tallon fica cego quando está sendo torturado e tem um dispositivo chamado ocular isso lhe permite ver através dos olhos de outras criaturas. Ele retorna à Terra vendo através dos olhos de um rato que encontra na nave espacial.