While LASIK surgery is a safe and effective procedure for many people, certain conditions may prevent someone from undergoing LASIK. These conditions include:\r\rUnstable Vision: If your vision has been changing frequently or has not stabilized for at least one year, LASIK may not be recommended. Fluctuating vision can affect the accuracy of the surgical correction.\r\rEye Diseases: if you have certain eye conditions, such as glaucoma, cataracts, keratoconus (a progressive thinning and bulging of the cornea), severe dry eye syndrome, corneal infections, or retinal diseases, they may disqualify you from LASIK surgery. These conditions can affect the safety and effectiveness of the eye surgery.\r\rThin Corneas: LASIK requires a certain corneal thickness for the creation of a corneal flap and subsequent laser reshaping. If your corneas are too thin, LASIK may not be suitable. In such cases, alternative procedures like PRK or ReLEX SMILE may be considered.\r\rLarge Pupils: Individuals with larger-than-average pupil size may experience increased risk of post-surgical complications such as glare, halos, or night vision disturbances. Pre-operative evaluations often measure pupil size to determine the suitability for LASIK.\r\rAutoimmune Disorders: if you have certain autoimmune disorders and conditions like rheumatoid arthritis, lupus, or Sjögren's syndrome they can affect the healing process and increase the risk of complications. LASIK may not be recommended for individuals with these conditions.\r\rPregnancy and Nursing: Hormonal changes during pregnancy and nursing can affect the stability of vision. It is generally advised to wait until hormonal levels stabilize before considering LASIK surgery.\r\rUnrealistic Expectations: If you have unrealistic expectations about the outcomes of LASIK or expect perfect vision without the need for glasses or contact lenses in all situations, LASIK may not be suitable for you. It's important to have a realistic understanding of the potential benefits and limitations of the eye surgery.