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IRCT20210519051344N2 IRCT 2021-12-24 Tabriz University of Medical Sciences Evaluation of Trans Epithelial Phototherapeutic keratectomy (TE_PTK) in correction of irregularities after refractive surgery Evaluation of Trans Epithelial Phototherapeutic keratectomy (TE_PTK) in correction of irregularities after refractive surgery 2021-11-30 anticipated 30 Complete https://irct.ir/trial/60487 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Treatment. N/A Corneal irregularities after Refractive Surgery. Among the patients referred to the Nikookari Eye Medical Center of Tabriz University of Medical Sciences, patients who have undergone refractive surgery in the past and have reduced vision by 2/10 to 9/10 and also have visual symptoms such as halo or diplopia, and in the Corneal epithelial mapping is irregular in the corneal epithelium. If desired and with informed consent, they are included in the study. Trans epithelial Phototherapeutic Keratectomy is performed using a excimer laser with a wavelength of 193 nm using local anesthesia in the operating room. During this surgery, the corneal epithelium is removed only in irregular areas and then the excimer laser is applied and the dressing lens and antibiotics and betamethasone drops are started for the patient.Their vision and refraction are measured on the first day and the first and third months. Also, the epithelial map is taken from the patient's cornea after 3 months.. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is I have not decided yet
public Dr.Banafsheh Sarmadi
Abbasi
Tabriz Iran (Islamic Republic of) 5154645395 +98 71 3228 8323 b_s524@yahoo.com Tabriz University of Medical Sciences scientific Dr.Afshin Lotfi Sadigh
Abbasi
Tabriz Iran (Islamic Republic of) 5154645395 +98 71 3228 8323 Lotfisadigh@tbzmed.ac.ir Tabriz University of Medical Sciences Iran (Islamic Republic of) Patient with low vision after refractive surgery completing informed consent form to participate in the study 20 years 65 years Both Collagen vascular diseases and Diabetes Ocular Surface Disease or Dry eye Patient with ocular pathology Treatment - Surgery Among the patients referred to the Nikookari Eye Medical Center of Tabriz University of Medical Sciences, patients who have undergone refractive surgery in the past and have reduced vision by 2/10 to 9/10 and also have visual symptoms such as halo or diplopia, and in the Corneal epithelial mapping is irregular in the corneal epithelium. If desired and with informed consent, they are included in the study. Trans epithelial Phototherapeutic Keratectomy is performed using a excimer laser with a wavelength of 193 nm using local anesthesia in the operating room. During this surgery, the corneal epithelium is removed only in irregular areas and then the excimer laser is applied and the dressing lens and antibiotics and betamethasone drops are started for the patient.Their vision and refraction are measured on the first day and the first and third months. Also, the epithelial map is taken from the patient's cornea after 3 months. Visual acuity. Timepoint: Patients' vision is measured before treatment and on the first day after treatment, as well as the first and third months. Method of measurement: Snellen Chart. Refractive error. Timepoint: Patients'refractive error is measured before treatment and on the first day after treatment, as well as the first and third months. Method of measurement: Autorefractometer. Tabriz University of Medical Sciences Approved 2021-11-30 Ethics committee of Tabriz University of Medical Sciences Abbasi street Tabriz East Azarbaijan Iran (Islamic Republic of)