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Recruiting NCT07605221

Nomogram for Astigmatism Correction of KLEx

No phase Interventional Astigmatism

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: nomogram.
Who it may be relevant to
Registry conditions: Astigmatism. Basic parameters: 18 years — 45 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
China
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

Nomogram Optimization for Astigmatism Precision Correction of Corneal Refractive Correction

Overview

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.

Interventions

  • Procedure nomogram
    nomogram was added to nomogram group

Primary outcome measures

  • residual astigmstism [Time frame: 3 months]
Secondary outcome measures (1)
  • visual acuity [Time frame: 3 months]

Eligibility criteria

Inclusion criteria

  • 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

Exclusion criteria

  • ocular or systematic disease

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation
Non-randomized
Model
Parallel assignment
Masking
Open label
Primary purpose
Prevention

Study locations

China · 1 center
  • Tianjin Eye Hospital — Tianjin

Identifiers

NCT: NCT07605221 · KY202632

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗