Clinical evaluation of surgery-induced astigmatism in cataract surgery using 2.2 mm or 1.8 mm clear corneal micro-incisions
Journal Title: International Journal of Ophthalmology - Year 2017, Vol 10, Issue 1
Abstract
"AIM: To evaluate corneal astigmatism after phacoemulsification using 2.2 mm or 1.8 mm clear corneal micro-incisions and its effects on visual function. METHODS: Sixty cases (60 eyes) with cataract were randomly divided into groups A (n=30) and B (n=30) respectively underwent 2.2 mm and 1.8 mm clear corneal tunnel incision phacoemulsification combined with folding intraocular lens implantation from the time direction of 11:00. On day 1 and at 1, 4, and 6wk after operation, patients’ vision was measured and both the corneal curvature and corneal thickness (CT) were recorded using Pentacam. RESULTS: The measured surgery-induced astigmatism (SIA) in both groups A and B peaked on day 1 after operation, and then gradually decreased and eventually stabilized in week 4. No statistically significant difference was found in corneal astigmatism between two groups (P>0.05). The measured corneal astigmatism at 4wk and 6wk postoperatively were 0.28±0.09 D and 0.27±0.10 D for groups A and 0.27±0.09 D and 0.25±0.10 D for groups B without statistically significant difference (P>0.05). In addition, no significant differences in visual acuity and CT were found between groups A and B before or after operation. CONCLUSION: Both 2.2 mm and 1.8 mm micro-incision cataract surgeries result in relatively small SIA with no difference in visual function and corneal astigmatism between two surgery approaches. Thus, the two types of surgical systems are safe and efficient for cataract treatment, by which satisfactory uncorrected visual acuity can be regained early postoperatively."
Authors and Affiliations
Rui-Hua Wei
Keywords
Related Articles
- EP ID EP613109
- DOI 10.18240/ijo.2017.01.11
- Views 59
- Downloads 0
Expressions of nestin and glial fibrillary acidic protein in rat retina after optic nerve transection
"AIM: To assess the expression of nestin and glial fibrillary acidic protein (GFAP) in rat retina after optic nerve transection. METHODS: Rats were randomly divided into normal control group, sham group and operation gro...
Visual efficiency among teenaged athletes and non-athletes
"AIM: To compare visual efficiency, specifically accom-modation, vergence, and oculomotor functions among athletes and non-athletes. METHODS: A cross-sectional study on sports vision screening was used to evaluate the vi...
Ultrasound reliability in detection of retinal tear in acute symptomatic posterior vitreous detachment with vitreous hemorrhage
Cross-sectional study of 75 consecutive patients presenting with acute symptomatic posterior vitreous detachment (ASPVD) and vitreous hemorrhage was conducted at University Eye Clinic, University Hospital “Sveti Duh”, Za...
Timing and approaches in congenital cataract surgery: a four-year, two-layer randomized controlled trial
"AIM: To compare visual prognoses and postoperative adverse events of congenital cataract surgery performed at different times and using different surgical approaches. METHODS: In this prospective, randomized controlled...
Down-regulation of protein kinase C alpha/ezrin signals in light-induced phagocytic crisis of retinal pigment epithelium cells
"AIM: To investigate the roles of PKC-α/ezrin signals in phagocytosis crisis of retinal pigment epithelium (RPE) cells in light damage model. METHODS: Light induced mice RPE injury model was established by continuously i...