Did I rewrite this run-on sentence correct?

Ellie's new glasses were much stronger than her old ones. As she walked out of the doctor's office the floor seemed to leap up at her.

Yes. That's good.

yep its good

One of my earrings fell off, it rolled under the stove. I could see it gleaming in the dim light but couldn’t reach it.

To determine if you have correctly rewritten the run-on sentence, we need to first understand what a run-on sentence is. A run-on sentence occurs when two or more independent clauses are joined together without proper punctuation or conjunctions.

In the original sentence you provided, "Ellie's new glasses were much stronger than her old ones. As she walked out of the doctor's office, the floor seemed to leap up at her," it appears that two independent clauses are joined together with only a period and "As" as the conjunction to connect them.

To correct a run-on sentence, you have a few options. One way is to separate the independent clauses into separate sentences. Another way is to use a coordinating conjunction (such as "and," "but," or "or") or a semicolon to join the independent clauses together.

Let's see what you have done:

"Ellie's new glasses were much stronger than her old ones. As she walked out of the doctor's office, the floor seemed to leap up at her."

It seems that you have successfully rephrased the run-on sentence into two separate sentences. Well done!