Inclusion Criteria:  Ages between 20-40 years Pregnant women with a gestational age less than 14 weeks in the first examination Having no systemic disease before and during pregnancy Having a spherical refractive error of less than 4 diopters, and/or had a cylindrical refractive error of less than 2 diopters  Exclusion Criteria:  Having systemic disease, having ocular pathology that may decrease visual acuity Usage of systemic drugs or topical ocular drops Usage of exogenous hormones and entered menopause