The effect of different techniques of PRK surgery on astigmatism

Comparison of clinical outcome between Wavefront-optimized photorefractive Keratectomy and Wavefront-guided photorefractive Keratectomy in patients with Astigmatism higher than 2 diopters

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20190806044459N1

Enrollment

206

Registered

2019-09-27

Start date

2019-09-23

Completion date

Unknown

Last updated

2019-11-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Astigmatism. Regular astigmatism, bilateral

Interventions

Intervention 1: Intervention group: Patients with Astigmatism Refractive Error Higher than 2 diopters that undergo Wave front optimized Photorefractive Keratectomy. Intervention 2: Intervention group:

Eligibility

Sex/Gender

All

Age

21 Years to No maximum

Inclusion criteria

Inclusion criteria: Patients with Astigmatism higher than 2 D refractive error Best-corrected visual acuity (BCVA) of 20/20 or better in both eyes Age 21 years or older

Exclusion criteria

Exclusion criteria: Dissatisfaction for participation Ocular surface disease and corneal dystrophy Recent use of Rigid Contact Lens (RGP) Previous corneal or intra-ocular surgery History of herpes keratitis Current use of systemic immunosuppressive therapy Presence of clinically significant atopic disease Connective tissue disease macular disease History of Glaucoma pregnancy and lactation

Design outcomes

Primary

Measure	Time frame
Visual acuity. Timepoint: Before Surgery , 6 Months after surgery. Method of measurement: snellen chart.;Contrast Sensitivity. Timepoint: 6 months after surgery. Method of measurement: CSV-1000 Chart.;Aberration Number. Timepoint: Before surgery ,6 Months after surgery. Method of measurement: Aberrometer.;Refractive Error. Timepoint: Before Surgery , 6 Months after Surgery. Method of measurement: Auto Refractometer.	—

Measure

Time frame

Visual acuity. Timepoint: Before Surgery , 6 Months after surgery. Method of measurement: snellen chart.;Contrast Sensitivity. Timepoint: 6 months after surgery. Method of measurement: CSV-1000 Chart.;Aberration Number. Timepoint: Before surgery ,6 Months after surgery. Method of measurement: Aberrometer.;Refractive Error. Timepoint: Before Surgery , 6 Months after Surgery. Method of measurement: Auto Refractometer.

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Countries

Iran (Islamic Republic of)

Contacts

Public ContactSaeedreza Moshfeghi

Esfahan University of Medical Sciences

moshfeghi69@gmail.com+98 31 3445 2031

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026