Cataract
Conditions
Interventions
Bilateral (240) eyes of 120 patients are randomly assigned to undergo long-length (no more than 1.75mm)
That reverse eyes 120 patients are randomly assigned to undergo short-length (<
1.75mm) clear corneal incision (CCI)of 2.4 mm in width.
Sponsors
Hayashi Eye Hospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Patients who are scheduled for bilateral phacoemulsification surgery with an acrylic intraocular lens (IOL) implantation at the Hayashi Eye Hospital between November 1, 2015 and November 11, 2016.
Exclusion criteria
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.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 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
| Measure | Time frame |
|---|---|
| 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 | — |
Countries
Japan
Contacts
Public ContactKen Hayashi
Hayashi Eye Hospital Department of ophthalmology
Outcome results
None listed