Comparison of PRESBYOND Laser Blended Vision and Conventional Monovision LASIK in Individuals With Presbyopia: A Randomized Clinical Study

The goal of this clinical trial is to learn if laser blended vision (LBV) works better than traditional monovision LASIK to correct presbyopia in adults aged 40 to 55 years. Presbyopia is an age-related condition that makes it hard to see things up close. The study will also evaluate the safety of both procedures. The main questions it aims to answer are: Does LBV improve distance, intermediate, and near vision at the same time after surgery? Is LBV as safe as traditional monovision LASIK? Researchers will compare laser blended vision to traditional monovision LASIK to see if LBV provides better overall vision after surgery. Participants will: Be randomly assigned to receive either laser blended vision or traditional monovision LASIK Have standard eye examinations before surgery Undergo LASIK surgery using the assigned method Return for follow-up visits at 1 week, 1 month, 3 months, and 6 months after surgery Complete vision tests and questionnaires about visual quality and satisfaction

NCT Number	NCT07512089
Lead Sponsor	Zhongshan Ophthalmic Center, Sun Yat-sen University
Conditions	Presbyopia, Refractive Error
Enrollment	100 participants
Start Date	2026-05-12
Primary Completion	2028-06-30 (estimated)
Study Completion	2028-06-30 (estimated)
Updated on ClinicalTrials.gov	2026-07-07