Your refractive error is possible to correct as long as you are not disqualified from the surgery during the preliminary examination. Hypothyroidism (Hashimoto’s disease) is not a contraindication to such a procedure, but it is necessary to provide a medical certificate from an endocrinologist attesting to the degree of the disease, stabilisation of hormone levels and lack of contraindications to the laser vision correction surgery. In patients with thyroid diseases the postsurgical healing process and the convalescence period may last longer than in people with a healthy thyroid gland.