For this power medically it is not indicated. You can see with glasses especially since you do not have astigmatism or cylinder power if it is only -3.0DS.
Side effects are dry eyes and blurring of night vision which can be more of a problem than wearing glasses as you may have to use lubricating eye drops constantly.
Next Steps
However if you do opt for lasik for cosmetic reasons this is the right time, because if you do you will be spectacle free for another 6 to 10 years.
Health Tips
doing lasik over 35 year may not be so beneficial as you need reading glasses at 40 yrs, and cataracts may develop subsequently