Well, when we humans learn to read, we learn to infer a few salient points not necessarily called out by the author. Non-autistic readers can deal with the absence of a word or two, taking the implied meaning from context.
For example, when someone mentions you learning how optics work, and then discussing how your eye doctor probably won't mind [possibly missing word here] changing a prescription, that carries the implicit idea of you, not your eye doctor, modifying the prescription. The entire discussion becomes pretty much meaningless if we reduce it to "Hey doc, can you bump this number up by a diopeter?".
But then, I don't know whether or not you, my reader, count as autistic, so feel free to interpret this in the most fucked up light imaginable.