Visual and Refractive Outcomes After Biaxial Microincision 1.3 mm Cataract Surgery With New Aspheric Hydrophilic IOL
Purpose
To report the visual, refractive outcomes and surgically induced astigmatism (SIA) following biaxial micro incision (1.3 mm) cataract surgery (B-MICS) with a new aspheric hydrophilic intraocular lens (IOL).
Methods
Prospective interventional case series. 114 eyes of 114 patients underwent B-MICS through a 1.3 mm clear corneal incision by a single surgeon. Data on optical biometry, keratometry, pre and post-operative unaided distance visual acuity (UDVA) and post operative corrected distance visual acuity (CDVA) were collected. Post operative keratometry was performed in all cases at four weeks time gate. Commercially available software was used to calculate SIA.
Results
There were no intra-operative complications. LogMAR mean post-operative UDVA and CDVA were 0.175 and 0.049 respectively. Post operative median spherical equivalent (MSE) was 0.125. The median absolute difference between predicted and actual MSE was 0.29 Dioptres (D). Mean numerical SIA was 0.23 D. Analysis of astigmatic vectors found no statistically significant difference between pre and post-operative keratometric values.
Conclusion
Bi-axial MICS using a new aspheric hydrophilic IOL through a 1.3 mm clear corneal incision results in minimal surgically induced astigmatism and can facilitate good postoperative visual function with predictable refractive outcomes.