Status:
UNKNOWN
The Effects of Primary Pterygium on Contrast Sensitivity Preoperatively and Postoperatively
Lead Sponsor:
Zhongshan Ophthalmic Center, Sun Yat-sen University
Conditions:
Primary Pterygium
Eligibility:
All Genders
20-60 years
Brief Summary
Pterygium is the growth of conjunctival tissue onto the cornea, usually from the nasal quadrant of the cornea.Visual acuity may be reduced due to direct invasion of the visual axis or astigmatism indu...
Detailed Description
There would have two groups included in our study, which are primary pterygium group(40 patients) and the normal group (20 volunteers). The inclusion criteria for the primary pterygium group were: 1) ...
Eligibility Criteria
Inclusion
- Clinical diagnosis of the primary pterygium;
- More than 18 and less than 60 years old;
- 0 or better logMAR BCVA;
- The absence of other ocular disorders and no history of eye surgery and other systemic diseases.
Exclusion
- Clinical diagnosis of recurrent pterygium or accompanied with other ocular diseases;
- less than 18 or more than 60 years old;
- The logMAR BCVA is less than 0.0;
- With the history of eye surgery and other systemic diseases.
Key Trial Info
Start Date :
November 1 2017
Trial Type :
OBSERVATIONAL
Allocation :
ESTIMATED
End Date :
December 31 2018
Estimated Enrollment :
60 Patients enrolled
Trial Details
Trial ID
NCT03406390
Start Date
November 1 2017
End Date
December 31 2018
Last Update
January 23 2018
Active Locations (1)
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1
Zhongshan Opthalmic Center
Guangzhou, Guangdong, China, 510000