title: [Changes in visual functions in myopia 6 months after photorefractive keratectomy].
abstract: I. 100 myopes (-0.25-(8.75) D) divided into 3 groups (I: < -3.0 D, II: -3.0-(-5.75) D, III: -6.0-(-8.75) D) were examined before and 1, 3, 6 months after photorefractive keratectomy (PRK). As a control group 20 emmetropes were examined. Best corrected visual acuity (BCVA) was tested using logMAR charts. Contrast sensitivity (CS) was measured using a computerized system. II. Preoperative BCVA in myopes of all three groups was significantly lower (p < 0.001) compared to the control group. A significant reduction of BCVA (p < 0.05 resp. p < 0.001) in all groups at all terms after PRK was noted. III. Significantly lower values of CS (p < 0.001) were found in myopes of all groups before PRK in comparison to the control group. One and 3 months after PRK only nonsignificant changes of the mean values of contrast sensitivity (MCK) were noted. After 6 months a significant improvement of MCK (p < 0.05) in myopes of I. and II. groups was observed.
authors.affiliation: Ocní klinika FN, Hradec Králové, CSc.
authors.forename: H
authors.initials: H
authors.lastname: Langrová
authors.forename: D
authors.initials: D
authors.lastname: Hejcmanová
authors.forename: J
authors.initials: J
authors.lastname: Peregrin
mesh_terms: D000293:Adolescent; D000328:Adult; D015350:Contrast Sensitivity; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D054018:Lasers, Excimer; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D018903:Photorefractive Keratectomy; D014792:Visual Acuity
vernacular_title: Zmĕny zrakových funkcí u myopie do 6 mĕsíců po fotorefraktivní keratektomii.