Irregular Corneal Astigmatism
Conditions
Interventions
Gold Standard:Actual corneal astigmatism
Index test:Corneal 
astigmatism 
by 
Pentacam 
in 
zone 
modes.
Sponsors
Ophthalmology Hospital affiliated to Wenzhou Medical University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. The patients who have completed the preoperative planning because of the planned cataract phacoemulsification and non spherical single focus intraocular lens implantation; 2. The subjects whose best corrected visual acuity was better than 0.66 (20 / 30); 3. Objects under 80 years old with acceptable cognitive function; 4. Subjects with corneal astigmatism >= 1.0d in 3mm area; 5. Objects with higher-order aberrations > 0.3 µ m within 4mm of cornea.
Exclusion criteria
Exclusion criteria: 1. Patients who had a history of ocular trauma or surgery before cataract surgery; 2. Patients with IOL tilt > 5 degrees were measured by Pentacam; 3. Patients with corneal and other ocular diseases that affect visual acuity (such as corneal leukoplakia, keratitis, glaucoma, uveitis, lens dislocation or subluxation, lens capsular relaxation, retinopathy, etc.); 4. Patients with severe or unstable heart, liver, kidney, lung, endocrine (including thyroid dysfunction), blood, mental and neurological disorders that affect the results of this study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Postoperative Corneal astigmatism;preoperative corneal astigmatism;internal aberration;corneal aberration;total aberration;postoperative subjective refraction;intraocular lens position;higher order aberrations of the cornea;ACC; | — |
Countries
China
Contacts
Public ContactAyong YU
Ophthalmology hospital affiliated to Wenzhou Medical University
Outcome results
None listed