Cataract
Conditions
Interventions
Phacoemulsification surgery using transconjuctival single-plane sclerocorneal incision with 2.4 mm in length in unilateral eyes of 64 enrolled patients
Phacoemulsification surgery using clear cornea
Sponsors
Hayashi Eye Hospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: All consecutive patients who were scheduled for bilateral cataract surgery at the Hayashi Eye Hospital from May 17, 2014. Bilateral eyes of 64 patients scheduled for cataract surgery were randomized to 1 of 2 groups: A) 32 patients who were to undergo a 2.4-mm single-plane sclerocorneal incision in the right eye and 2.4-mm clear corneal incision in the left eye, or B) 32 patients who were to undergo a 2.4-mm single-plane sclerocorneal incision in the left eye and 2.4-mm clear corneal incision in the right eye.
Exclusion criteria
Exclusion criteria: Exclusion criteria were eyes with any pathology of the cornea, vitreous body, macula, or optic nerve; eyes with glaucoma or ocular hypertension; eyes with pseudoexfoliation syndrome; eyes scheduled for planned extracapsular cataract extraction; a history of previous ocular surgery or inflammation; patients with diabetes; patient refusal; and any anticipated difficulties with examination or follow up.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| A) Changes in IOP and wound structure immediately after cataract surrgery 1) Longitudinal changes in IOP using rebound tonometer after cataract surgery preoperatively, at the conclusion of surgery; and at 15, 30, 60, and 120 minutes, and 24 hours postoperatively. 2) Seidel test at 30 minutes postoperatively 3) Wound structure at 30 minutes after surgery using the anterior segment-optical coherence tomography (AS-OCT) B) Changes in corneal astigmatism and shape preoperatively and at 2, 14, 30, and 60 days postoperatively 4) Corneal astigmatism and surgically induced astigmatism determined using keratometer 5) Corneal shape change determined using corneal topography 5-1) Averaged difference map 5-2) Irregular corneal astigmatism determined by Fourier analysis | — |
Secondary
| Measure | Time frame |
|---|---|
| 6) Corneal endothelial cell counts and central corneal thickness 7) Visual acuity 8) Refractive status (spherical power, refractive cylinder, manifest spherical equivalent power) | — |
Countries
Japan
Contacts
Public ContactKen Hayashi
Hayashi Eye Hospital Department of Ophthalmology
Outcome results
None listed