presbyopia
Conditions
Interventions
prompt surgery group:undergo refactive lens exchange surgery immediately
deferred surgery group:undergo refactive lens exchange surgery 3 months later
Sponsors
the First Affiliated Hospital of Chongqing Medical University
Eligibility
Sex/Gender
All
Age
45 Years to 80 Years
Inclusion criteria
Inclusion criteria: a. Aged 45 years or older b. Not yet receive ocular surgery before. C. Diagnosed with presbyopia in any eye. d. BCVA >=0.8 Snellen(to exclude significant cataract,according previous study) . e. Patients with strong willing to receive the surgery.
Exclusion criteria
Exclusion criteria: The presence of any of the following will exclude a subject from the study enrollment: a. Any ocular disease:.corneal disease, glaucoma, uveitis, retinal choroidal disease. b. Any not suitable for presbyopia-correcting intraocular lenses: the total higher-order aberration (Total HOA) in the 4mm central diameter area of the cornea is greater than 0.5 µm, a kappa angle greater than 0.5 or greater than half of the diameter of the central refractive optical zone of the multifocal artificial lens, a pupil diameter greater than 5.5mm or less than 3mm. c. Any other condition which, in the opinion of the investigator, would put the subject at risk by participation in the protocol.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| VF14 scale; | — |
Secondary
| Measure | Time frame |
|---|---|
| SF36 scale;OQAS;Need of spectacles;UDVA, UIVA, UNVA;QUVID score(about halos, glare and starbursts); | — |
Countries
China
Contacts
Public ContactKe Hu
the First Affiliated Hospital of Chongqing Medical University
Outcome results
None listed