From Longman Dictionary of Contemporary Englishthink/see straightthink/see straightif you cannot think or see straight, you cannot think or see clearly Turn the radio down – I can’t think straight. → straight
Examples from the Corpus
think/see straight• Since that day she had not been able to sleep, or to think straight.• The buzz made it hard to think straight.• Then she might - just might - be able to think straight.• Sooner or later he would be too exhausted to think straight and would give up the fight against himself.• You are horrified, you can not think straight, as you stare at the broken body.• On the outermost point of the peninsula we could see straight over to Midland Isle and just beyond that to Skomer Island.• Metaphorically speaking, you could see straight through him to the other side of the room.• He always saw straight to the point of an argument. 