Is it better to get glasses from optometrist?

When it comes to getting glasses, is it wiser to seek the expertise of an optometrist rather than other options? Do optometrists offer a more personalized and accurate assessment of one's vision needs, ensuring a better fit and improved visual clarity? Or are there other avenues that could potentially provide similar results at a lower cost? What are the potential drawbacks of choosing a non-optometrist route for glasses acquisition?