Choroidal neovascularization (CNV) secondary to pathologic myopia (PM-CNV) is a common vision-threatening complication and often affects adults of working age. Intravitreal injection of any anti-vascular endothelial growth factor (VEGF) drugs would significantly suppress the activity of the CNV and finally improve the visual acuity. However, more than half of the patients would need one or more further injection for the recurrence or uncontrolled with 1+pro re nata (PRN) treatment within one year, and whether increasing the initial loading of intravitreal injection of anti-VEGF would be more efficacy for the controlling the PM-CNV remained unknown.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
50
intravitreal injection of Conbercept 0.5mg every month repeated for 3 months,
intravitreal injection of Conbercept 0.5mg every month repeated for 6 months
Zhongshan Ophthalmic Center
Guangzhou, Guangdong, China
BCVA change
the mean change in BCVA from the baseline to month 12 in patients with PM-CNV receiving Conbercept 0.5mg 3+PRN or 6+PRN
Time frame: 12 months
Recurrence rate of PM-CNV
the number of recurrence of choroidal neovascularization secondary to pathologic myopia
Time frame: 12 months
BCVA at 3 years
the change of best corrected visual acuity (BCVA) at 3 years
Time frame: 36 months
The change of CNV size
the size of choroidal neovascularization as measured by OCT
Time frame: 12 months
The treatment exposure
the number of total injection within 1 year and 3 years
Time frame: 12 months
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