How do I know that I need a lasik eye surgery

Here are some factors to consider when determining if LASIK eye surgery might be appropriate for you:

Refractive error: LASIK is primarily used to correct common refractive errors, such as nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. If you have one of these refractive errors and it significantly affects your daily activities or quality of life, LASIK might be a potential treatment option.
Stable vision: It's important to have a stable vision prescription before undergoing LASIK surgery. This means that your vision should not have significantly changed in the past year or so. If your prescription has been relatively stable, it suggests that your eyes have reached a point where LASIK may be more effective.
Age and eye health: LASIK is generally recommended for individuals over the age of 18, as the eyes typically continue to change during adolescence. Additionally, you should have overall good eye health, free from conditions such as glaucoma, cataracts, or severe dry eyes.
Realistic expectations: Understanding the benefits, limitations, and potential risks of LASIK surgery is crucial. LASIK can improve vision, but it's important to have realistic expectations and be aware that perfect vision cannot always be guaranteed. Consulting with an eye care professional can help set appropriate expectations for your specific situation.
Lifestyle considerations: Consider your lifestyle and whether LASIK would provide significant benefits. For example, if you are an athlete or have a profession that requires excellent unaided vision, LASIK may be more appealing. On the other hand, if you have a job that exposes your eyes to potential injury or have certain medical conditions that might affect the healing process, LASIK may not be suitable.

Anyway, I recommend you consult with your doctor to assess the situation.