What's in the fossil records are instances of "eye" and instances of "cell" that are then incorrectly linked together and called evolution. It's like finding a step stool and finding a couch and then theorizing that the step stool evolved into a couch...on it's own. That's downright silly. What happened was that somebody invented a step stool for a specific purpose and it fulfills that purpose. And somebody created a couch for a specific purpose. The couch didn't "evolve" from a stepstool. There was thought and design put into both of these things.
It's kind of funny too that you seem to believe a light sensitive cell is somehow primitive. Nothing could be further from the truth! Work backwards from light sensitive cell and explain how that was manufactured. How did neurotransmitters evolve? How did the various proteins evolve?
This "explanation" is so simple and childlike as to be laughable. Did this photo receptor layer just spring full formed into being? Did refractive lenses just magically appear? This is what we're (or rather you) have been led to believe. Don't put any thought at all into exactly how complex each and every "label" here is and how delicate the balance is between each component. Just trust and us and believe that somehow magically one thing became another. Don't question HOW or the mechanisms. Just believe.