Surrgical Induced Astigmatism
Conditions
Keywords
Kataract, Astigmatism, phacoemulsification
Brief summary
To compare the short-term astigmatic outcomes of phacoemulsification cataract surgery and intraocular lens implantation using temporal versus nasal clear corneal incisions.
Detailed description
In a clinical trial, consecutive eyes with senile cataract underwent phacoemulsification with implantation of a 6.0 mm foldable hydrophobic acrylic intraocular lens through a 3.2 mm horizontal clear cornea incision at 180 degrees (temporal incision in right eyes, nasal incision in left eyes). Keratometric astigmatism was measured preoperatively and one and four weeks and 6 months after surgery. Surgically induced astigmatism (SIA) was calculated by the vector analysis method using the Holladay-Cravy-Koch formula. Patients with history of diabetes mellitus, connective tissue disorders, steroid use, previous ocular surgery, with the rule astigmatism \>1D, pseudoexfoliation and any corneal pathology were excluded.
Interventions
clear cornea phacoemulsification and intraocular lens implantation using temporal or nasal incisions respectively
Sponsors
Shahid Beheshti University of Medical Sciences
Study design
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
Inclusion criteria
* All the patients with senile cataract
Exclusion criteria
* Previously operated eyes * Presence of corneal pathology * Pseudo exfoliation * With-the-rule (WTR) astigmatism \>1 D * Presence of diabetes mellitus * History of connective tissue disease * Consumption of systemic steroids
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Total and Surgical Induced Astigmatism | At 1 and 4 weeks and 6 month after surgery |
Countries
Iran
Outcome results
None listed