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Comparison of PRESBYOND Laser Blended Vision and Conventional Monovision LASIK in Individuals With Presbyopia: A Randomized Clinical Study
Sponsor: Zhongshan Ophthalmic Center, Sun Yat-sen University
Summary
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
Key Details
Gender
All
Age Range
40 Years - 55 Years
Study Type
INTERVENTIONAL
Enrollment
100
Start Date
2026-04-01
Completion Date
2028-06-30
Last Updated
2026-04-06
Healthy Volunteers
No
Conditions
Interventions
Laser Blended Vision LASIK
Laser blended vision LASIK is a refractive surgery technique for presbyopia correction. The dominant eye is corrected for distance vision, and the non-dominant eye is adjusted to mild myopia to improve near vision using a laser blended vision design.
Traditional Monovision LASIK
Monovision LASIK is a refractive surgery technique in which the dominant eye is corrected for distance vision and the non-dominant eye is corrected for near vision to improve presbyopia.