Directed by Roger Corman this is one of his typical 'B' movies, an early 1960s low budget sci-fi film about a doctor who develops a serum to enhance the sensitivity of the eye to a wider spectrum - then experiments on himself.
The running time of 75 minutes is just right - the storyline is slim, and any longer would drag - as Dr Xavier (Ray Milland, wearing his usual hairpiece) sees his vision improve to where he can improve medical diagnosis, see through clothes, beat the house at a casino, then go downhill through 'mind reading' to being disabled by the sensitivity of his eyes...
Modern effects would both enhance and yet ruin this film - it is what it is, a period piece of science fiction. Superb stuff - 4/5 stars, although that does seem a little generous.