The Corneal and Conjunctiva Sensation Before and After Pterygium Surgeries

Not Applicable

• Conditions: Pterygium
• Interventions: Device: Cochet bonnet esthesiometer

• Registration Number: NCT03314389
• Lead Sponsor: Sheba Medical Center

Brief Summary

The purpose of this current study is to examine the sensation of the corneal and conjunctiva sensation before and after pterygium surgeries by Cochet bonnet esthesiometer and to examine epidemiological, clinical and imaging factors the influence the sensation

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-10-09
• Study First Submitted QC: 2017-10-17
• Study First Posted: 2017-10-19
• Status Verified: 2018-04
• Last Update Submitted: 2018-04-20
• Last Update Posted: 2018-04-23
• Study Start: 2018-05-01
• Primary Completion: 2019-01-01
• Study Completion: 2019-10-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

• Patients that suppose to undergo pterigyum surgery

Exclusion Criteria

• Patients with anterior segment diseases Patients that underwent anterior segment surgeries Patients with 7th nerve palsy

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Cochet bonnet esthesiometer	Cochet bonnet esthesiometer	To examine sensation

Primary Outcome Measures

Name	Time	Method
To sensation before and after pterygium surgeries as measured by Cochet bonnet esthesiometer	Before surgery compare to one week+ one month+three months after surgery	The change in sensation in the cornea and conjunctiva after pterygium surgery as measured by Cochet bonnet esthesiometer

Secondary Outcome Measures

Name	Time	Method
To examine the change in imaging of anterior segment that may predicate the change in sensation after pterygium surgery:	Before surgery compare to one week+ one month+three months after surgery	Anterior Chamber Optical coherence tomography( AC-OCT)
To examine the Recurrence of pterygium	one week+ one month+three months after surgery	Recurrence of pterygium as examined in slit lamp examination
To examine the change in dry eye syndrome that may predicate the change in sensation after pterygium surgery	Before surgery compare to one week+ one month+three months after surgery	Dry eye will be measured by lissamine green test
To examine the change in refraction that may predicate the change in sensation after pterygium surgery:	Before surgery compare to one week+ one month+three months after surgery	Refraction will be measured by autorefractometer
To examine the change in visual acuity that may predicate the change in sensation after pterygium surgery	Before surgery compare to one week+ one month+three months after surgery	Visual acuity will be measured by Snellen chart
To examine the change in anterior chamber that may predicate the change in sensation after pterygium surgery:	Before surgery compare to one week+ one month+three months after surgery	Anterior chamber slit lamp examination