About this trial
The goal of this clinical trial is to learn if nomogram could promote treatment outcomes in astigmatism correction. The main question it aims to answer is:
does the nomogram could promote treatment outcomes in astigmatism correction? If there is a comparison group: Researchers will compare non-nomogram adopted to see if the outcome acceptable.
Participants will ask to complete 3-month follow-up of manifest refraction and visual acuity test.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
age ≥18 years; preoperative sphere -0.50 D to -10.00 D; preoperative cylinder -1.50 D to -5.00 D; stable refraction (±0.50 D) for 1 year; normal corneal topography; central corneal thickness >500 μm or predicted residual stromal bed >280 μm; intraocular pressure <21 mmHg
Disqualifiers
ocular or systematic disease
Trial design
Parallel
Treatments tested in this trial
nomogram
Procedure/Surgerynomogram was added to nomogram group
Treatment groups
Trial outcomes
Primary outcomes
residual astigmstism
Secondary outcomes
visual acuity
Sponsors and contacts
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