Posters
Arcuate keratotomy using spot reflector topography for residual astigmatism after intraocular lens implantation
Poster Details
First Author: J.Soler Tomas SPAIN
Co Author(s): G. Fuentes Paez S. Burillo
Abstract Details
Purpose:
Report visual results with spot reflector topography based arcuate keratotomy for residual astigmatism and comparison to Orbscan data.
Setting:
Private clinical practice in Barcelona, SPAIN.
Methods:
Prospective case series of patients undergoing arcuate keratotomy (AK) for residual astigmatism (<2.0D) after intraocular lens (IOL) implantation (multifocal, monofocal, or toric IOL). Paired corneal incisions on the steepest angle were performed, using spot reflector topography, with a 3.2mm slit-angled ophthalmic knife. Pre and post AK data included: Time before AK, distance uncorrected and best corrected visual acuities (UCVA, BCVA: logMAR scale), subjective sphere, astigmatism & axis, spherical equivalent (SE), Orbscan (DP-3002 v.3-14.), and spot reflector topographer (SRT)(CASSINI i-Optics) mean Km, anterior astigmatism, and axis. Data was analyzed with paired t-student and Pearson correlation (p �â��¤ 0.05).
Results:
Total of 50 eyes, 35 patients, 15 men, 35 women, mean age 62.9�Â�±10.9 years, time before AK 445.41�Â�±869 days, pre/post data: UCVA 0.22�Â�±0.15/0.13�Â�±0.1 (p<0.01), BCVA 0.13�Â�±0.1 /0.13�Â�±0.2(p=0.60), SE 3.1�Â�±2.03D / 0.03�Â�±0.27D (p=0.32), sphere 0.40�Â�±0.4D/0.09�Â�±0.2D (p<0.01), subjective astigmatism 0.82�Â�±0.4D/0.06�Â�±0.4D (p<0.01), SRT astigmatism1.4�Â�±0.93D/0.83�Â�±0.38D (p<0.05), SRT Km 43.50�Â�±1.6D/43.77�Â�±1.5D (p=0.63), SRT axis 93�Â�±45.90D/75�Â�±39.80D (p=0.08),Orbscan astigmatism 1.22�Â�±0.7D/1.2�Â�±2D (p=0.98), Orbscan Km 43.3�Â�±4/43.7D (p=0,89), Orbscan axis 95�Â�±48�Â�°/81.9�Â�±44�Â�°(p=0.06). Pearson correlation SRT vs. Orbscan astigmatism (R=0.90), axis (R=0.80), Km (0.93).
Conclusions:
Arcuate keratotomy, using spot reflector topography, significantly improved UCVA while reducing subjective sphere and astigmatism. Strong correlation was recorded between SRT and Orbscan data.
Financial Disclosure:
NONE
