Laser Blended Vision-Lasik For Presbyopia And Clinical Experience In 350 Patients :A 3 Year Follow Up Study

To evaluate the monocular and binocular visual outcomes of LASIK with a non-linear aspheric micro-monovision protocol for the correction of myopia, myopic astigmatism, hyperopia with presbyopia

Prasad netralaya Private super speciality tertiary eye hospital

A prospective, non-comparative case series which included 700 eyes of 350 consecutive patients with myopia, myopic astigmatism, hyperopia with presbyopia who were treated with LASIK using the laser blended vision protocol(Carl Zeiss). CRS-Master software and MEL 80 excimer laser (Carl Zeiss Meditec,Germany) were used for the study. The target refraction was plano for distance eyes (dominant eye) and between -1.25 and -1.75 diopters (D) for near eyes. The study included myopes (-0.25 to-7.25DS), hypermetropes(0.25 to 2.5DS)and emmetropic presbyopes between ages 39 to 55 yrs(mean 47) and a followup period of minimum 3 year. astigmatism between -0.25 to -2.75 DC included

Achieved Spherical equivalent correction was within -0.50 D in 92% and within -1.00 D in 100% of eyes at 3year . Monocular uncorrected distance visual acuity was 20/20(6/6) atleast in 70%, 20/32(6/9) atleast in 98%. Binocularly 80% read 6/6 atleast and 100% read 6/9. Binocular uncorrected near visual acuity was N8 in 3% and N6 in 97%of patients. None of the eyes lost 1 or more lines of corrected distance visual acuity

The non-linear aspheric micro-monovision protocol was well-tolerated, stable in 3 year , and a safe treatment option in patients with presbyopia and myopia , myopic astigmatism and hyperopia. Stability of refraction and results over longer duration need to be studied