Ignite Creation Date:
2025-12-25 @ 12:56 AM
Ignite Modification Date:
2026-03-13 @ 6:55 AM
Study NCT ID:
NCT00563667
Status:
UNKNOWN
Last Update Posted:
2010-07-07
First Post:
2007-11-21
Is Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Effect of Pterygium Excision on Intraocular Lens Power Calculation for Subsequent Cataract Operation
Sponsor:
Organization:
Raw JSON
{'hasResults': False, 'derivedSection': {'miscInfoModule': {'versionHolder': '2025-12-24'}, 'conditionBrowseModule': {'meshes': [{'id': 'D011625', 'term': 'Pterygium'}, {'id': 'D002386', 'term': 'Cataract'}, {'id': 'D001251', 'term': 'Astigmatism'}], 'ancestors': [{'id': 'D003229', 'term': 'Conjunctival Diseases'}, {'id': 'D005128', 'term': 'Eye Diseases'}, {'id': 'D007905', 'term': 'Lens Diseases'}, {'id': 'D012030', 'term': 'Refractive Errors'}]}}, 'protocolSection': {'designModule': {'phases': ['NA'], 'studyType': 'INTERVENTIONAL', 'designInfo': {'allocation': 'NON_RANDOMIZED', 'maskingInfo': {'masking': 'NONE'}, 'primaryPurpose': 'TREATMENT', 'interventionModel': 'SINGLE_GROUP'}, 'enrollmentInfo': {'type': 'ESTIMATED', 'count': 40}}, 'statusModule': {'overallStatus': 'UNKNOWN', 'lastKnownStatus': 'ACTIVE_NOT_RECRUITING', 'startDateStruct': {'date': '2003-12'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2010-07', 'completionDateStruct': {'date': '2004-12', 'type': 'ESTIMATED'}, 'lastUpdateSubmitDate': '2010-07-06', 'studyFirstSubmitDate': '2007-11-21', 'studyFirstSubmitQcDate': '2007-11-23', 'lastUpdatePostDateStruct': {'date': '2010-07-07', 'type': 'ESTIMATED'}, 'studyFirstPostDateStruct': {'date': '2007-11-26', 'type': 'ESTIMATED'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'IOL power', 'timeFrame': '1 and 3 months post pterygium excision'}, {'measure': 'Astigmatism', 'timeFrame': '1 and 3 months post pterygium excision'}]}, 'conditionsModule': {'keywords': ['Pterygium', 'Cataract', 'Astigmatism'], 'conditions': ['Pterygium', 'Cataract', 'Astigmatism']}, 'descriptionModule': {'briefSummary': 'Pterygium is known to induce with-the-rule astigmatism. Excision of pterygium will steepen the cornea and reduce corneal astigmatism. We postulate that the alteration of keratometry reading will indirectly affect the IOL power calculation in cases with concurrent pterygium and cataract. Concurrent pterygium and cataract is common in Hong Kong and other tropical regions. The effect of pterygium excision on intraocular lens power calculation is investigated.'}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT', 'OLDER_ADULT'], 'minimumAge': '18 Years', 'eligibilityCriteria': 'Inclusion Criteria:\n\n* All cases with concomitant cataract and primary pterygium, which are indicated for surgery.\n\nExclusion Criteria:\n\n* Pterygium smaller than 1mm, which is not visually significant.\n* Double headed pterygium\n* Pterygium obscuring visual axis that preclude keratometry or autorefraction measurements.\n* Previous corneal refractive surgery that alter the keratometric power of the cornea.\n* Patients with medical problems that preclude staged ocular surgery, e.g. dementia, heart disease, on warfarin.'}, 'identificationModule': {'nctId': 'NCT00563667', 'briefTitle': 'Effect of Pterygium Excision on Intraocular Lens Power Calculation for Subsequent Cataract Operation', 'organization': {'class': 'OTHER_GOV', 'fullName': 'Hospital Authority, Hong Kong'}, 'officialTitle': 'Effect of Pterygium Excision on IOL Power Calculation: Concurrent Cataract and Pterygium', 'orgStudyIdInfo': {'id': 'CRE-2003.353'}, 'secondaryIdInfos': [{'id': 'HARECCTR0500013'}]}, 'armsInterventionsModule': {'interventions': [{'name': 'pterygium excision', 'type': 'PROCEDURE'}]}, 'contactsLocationsModule': {'locations': [{'city': 'Hong Kong', 'country': 'China', 'facility': 'Alice Ho Miu Ling Nethersole Hospital', 'geoPoint': {'lat': 22.27832, 'lon': 114.17469}}, {'city': 'Hong Kong', 'country': 'China', 'facility': 'Hong Kong Eye Hospital', 'geoPoint': {'lat': 22.27832, 'lon': 114.17469}}, {'city': 'Hong Kong', 'country': 'China', 'facility': 'Prince of Wales Hospital', 'geoPoint': {'lat': 22.27832, 'lon': 114.17469}}], 'overallOfficials': [{'name': 'Lulu Cheng, Dr', 'role': 'PRINCIPAL_INVESTIGATOR', 'affiliation': 'Department of DOVS, Prince of Wales Hospital/ The Chinese University of Hong Kong'}]}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'Hospital Authority, Hong Kong', 'class': 'OTHER_GOV'}}}}