Astigmatism
Conditions
Brief summary
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
PROCEDUREnomogram
nomogram was added to nomogram group
Sponsors
Tianjin Eye Hospital
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
No
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
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| residual astigmstism | 3 months |
Secondary
| Measure | Time frame |
|---|---|
| visual acuity | 3 months |
Countries
China
Contacts
CONTACTJiamei Zhang
Outcome results
None listed