At that distance you are not resolving the size of the star with your sight, but the magnitude of the light they produce. This is different to our sun because we are close enough to experience its size. With stars the distance they can be observed from is dependent on the brightness of the light they produce. For example, if you continued to move away from our sun it would continue to get smaller until it was a pinpoint, somewhere around Jupiter or Saturn, but that pinpoint would still be visible until you were about 56 light years away, such is it's brightness. It's the same principle as flashlights, they can all be the same size, but some have a beam length of 10m while others have a beam that can reach hundreds of metres. It all depends on the brightness of the bulb. Stars are very bright, almost unimaginably so. https://public.nrao.edu/ask/how-can-we-see-stars-in-the-night-sky-when-they-are-so-far-away/

At that distance you are not resolving the size of the star with your sight, but the magnitude of the light they produce. This is different to our sun because we are close enough to experience its size.

With stars the distance they can be observed from is dependent on the brightness of the light they produce. For example, if you continued to move away from our sun it would continue to get smaller until it was a pinpoint, but that pinpoint would still be visible until you were about 56 light years away, such is it's brightness.

It's the same principle as flashlights, they can all be the same size, but some have a beam length of 10m while others have a beam that can reach hundreds of metres. It all depends on the brightness of the bulb. Stars are very bright, almost unimaginably so.

https://public.nrao.edu/ask/how-can-we-see-stars-in-the-night-sky-when-they-are-so-far-away/