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Accuracy of Corneal Astigmatism in Different Region Modes

RecruitingN/A

Sponsor: Wenzhou Medical University

Conditions: Astigmatism, Cornea

Interventions: patients with corneal astigmatism

Countries: China

To analyze the difference between measured total corneal astigmatism and actual corneal astigmatism under different region modes and optimize the region setting.

Eligibility overview

Sex: ALL

Age: 18 Years to —

Healthy volunteers: No

Study type: OBSERVATIONAL

Eligibility criteria

Inclusion Criteria:

* Age ≥ 18 years
* Patients who had received phacoemulsification surgery with or without implantation of toric IOL are with a certain amount of corneal astigmatism.
* Best corrected visual acuity ≥ 0.66 (20/30 Snellen)

Exclusion Criteria:

* Corneal diseases or severe irregular astigmatism (e.g., pterygium, keratoconus), existence of corneal opacification;
* Ocular disease which may affect visual acuity (e.g., glaucoma, uveitis, retinal disease, pathologic myopia);
* History of ocular surgery or ocular trauma before this cataract surgery;
* Decentration of IOL \> 0.3mm or tilt \> 5°
* Implantation of multifocal IOL
* history of wearing of rigid contact lens within the past 4 weeks or soft contact lens within 1 week;

Locations (1)

Wenzhou, Zhejiang, China