Visual And Refractive Outcomes Following Laser Blended Vision With Non-Linear Aspheric Micro-Anisometropia (Presbyond)

Presbyond laser blended vision is a unique modality of correction of Presbyopia. The concept works on creating a micro anisometropia between the two eyes while increasing the depth of field by targetting a range of spherical aberration. The dominant eye is targetted at plano while the non dominant eye is aimed at -1.50. The purpose of this study is to evaluate refractive and quality of life outcomes of PRESBYOND for correction of ametropia with presbyopia. 

Design: Prospective 

Setting: Uma Eye Clinic , Chennai. Institutional ethics clearance was obtained. Informed consent obtained from all participants in the study. Declaration of Helsinki adhered to.

 Methods: An overall of 70 patients are included in the study. Age range 43-65. Myopes and Hyperopes with Presbyopia are included. PRESBYOND is a excimer laser based treatment on a FEMTO- LASIK platform The treatment profile targets plano refraction for the dominant eye and -1.50 in the non dominant eye with the induction of therapeutic spherical aberration to increase depth of focus. Single experienced surgeon performed all the procedures. Patients are evaluated at the end of 3 months where vision , refraction and aberrometry is performed. The standard 9 graphs for reporting outcomes will be displayed. A validated questionnaire will be presented to determine quality of life outcomes 

Results: There were no loss of two or more lines in any of the patients. 95% of patients achieved unaided 6/5 at distance , N5 at intermediate (60cm) N5 at near (33cm). 

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Conclusion: PRESBYOND is found to be a safe and effective procedure for treatment of ametropia with prebyopia