Surgically induced changes in astigmatism and shape of total and posterior cornea after nasal versus temporal clear corneal incision (CCI) cataract surgery: a prospective randomized clinical study.
Not Applicable
- Conditions
- Cataract
- Registration Number
- JPRN-UMIN000028385
- Lead Sponsor
- Hayashi Eye Hospital
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete: follow-up complete
- Sex
- All
- Target Recruitment
- 100
Inclusion Criteria
Not provided
Exclusion Criteria
Exclusion criteria were 1) eyes with any pathology of cornea, optic nerve, and macula; 2) eyes with lens nucleus harder than grade 4 according to the Lens Opacities Classification System III; 3) eyes with a poor mydriasis less than 4.5 mm; 4) eyes with possible zonular weakness, 5) eyes with pseudoexfoliation; 6) eyes with prior history of ocular surgery and inflammation, 7) patients with diabetes; 8) patients who were referred from other hospitals, and 9) patients who had been enrolled in other studies
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Patients are to undergo examinations at 2 days and at 2, 4, and 8 weeks after surgery. 1) Corneal astigmatism of anterior and posterior corneas (simulated K value of a videokeratography system; Tomey TMS-5) 2) Corneal shape changes of anterior and posterior cornea (average of difference map of TMS-5)
- Secondary Outcome Measures
Name Time Method 3) Irregular astigmatism components (asymmetry and higher-order irregularity components) 4) Ocular higher order aberrations (HOAs) 5) Visual acuity and refractive status 6) Wound length and width 7) Pupil diameter 8) Surgical factors