Surgically Induced Astigmatic Change and Shape Changes of Total, Anterior, and Posterior Corneas After Long- versus Short-Length Clear Corneal Incision Cataract Surgery: A Randomized Clinical Study
Not Applicable
- Conditions
- Cataract
- Registration Number
- JPRN-UMIN000025345
- Lead Sponsor
- Hayashi Eye Hospital
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete: follow-up complete
- Sex
- All
- Target Recruitment
- 120
Inclusion Criteria
Not provided
Exclusion Criteria
Exclusion criteria are eyes with pathologies except for cataract; eyes with pseudoexfoliation syndrome; eyes that were to undergo planned extracapsular or intracapsular cataract extraction; eyes with a possible zonular dehiscence; a history of ocular surgery or inflammation; patients with diabetes mellitus; patients who refused the inclusion in the study; and difficulties with examination or follow-up. Patients who were enrolled in other studies were excluded.
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 total, anterior, and posterior corneas (simulated K value of a videokeratography system; Tomey TMS-5) 2) Surgically induced astigmatic change of total, anterior, and posterior corneas (power vector analysis) 3) Shape changes in of total, anterior, and posterior corneas (average of difference map of TMS-5)
- Secondary Outcome Measures
Name Time Method 4) Incision length of clear corneal incisions 5) Irregular astigmatism components (asymmetry and higher-order irregularity components) 6) Ocular, corneal, and internal optic higher order aberrations (HOAs) 7) Corrected distance visual acuity and manifest spherical equivalent value