Inclusion criteria:
Age between 30 and 40 years
Presence of corrected refractive error with asthenopia in the mild to moderate range (myopia up to -6 diopters, hyperopia up to +4 diopters, astigmatism up to 2 diopters), so that the patient needs optical correction, but not complete correction.
Not wearing glasses in the past 6 months or current prescription is inappropriate
Written consent to participate in the study
Having eyes (asthenopia)
Not having presbyopic qualities and having perfect nearsightedness
Exclusion criteria:
Any active anterior and posterior segment disease of the eye
History of eye surgery (including refractive surgery, cataract surgery, corneal transplantation, ring, cross-linking, etc.)
History of eye trauma
Accommodation and vergence disorders, strabismus, amblyopia or history of related treatments in the past
Systemic diseases affecting eye refractive errors (such as systemic autoimmune diseases, thyroid diseases, diabetes, etc.)
Psychiatric disorders or use of psychotropic drugs
Use of drugs that affect sleep or vision such as benzodiazepines, hypnotics, ophthalmic drugs with CNS effects in order to reduce confounding factors in examining the effect of uncorrected refractive errors on sleep quality.
Wearing any type of contact lenses in the last month
Regular coffee and caffeinated beverages
People with stressful, shift or hourly jobs
Working in bright and noisy environments