Accuracy of Holladay 2 Formula in the Absence of Lens Thickness

• Sponsor: Mahidol University (Other)
• Overall Status: Completed
• CT.gov ID: NCT01846078
• Collaborator: (none)
• Enrollment: 143
• Location: 1
• Arm: 1
• Duration (Months): 6
• Patients Per Site Per Month: 23.8

Study Details

Study Description

Brief Summary

Hypothesis: Holladay 2 formula is still accurate even used without lens thickness data.

Condition or Disease	Intervention/Treatment	Phase
Cataracts	Device: optical biometric measurement (IOLMaster)	N/A

Study Design

• Study Type: Interventional
• Actual Enrollment: 143 participants
• Allocation: N/A
• Intervention Model: Single Group Assignment
• Masking: None (Open Label)
• Primary Purpose: Diagnostic
• Official Title: Accuracy of Holladay 2 Formula Using IOLMaster Parameters in the Absence of Lens Thickness
• Study Start Date: Jun 1, 2012
• Actual Primary Completion Date: Sep 1, 2012
• Actual Study Completion Date: Dec 1, 2012

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Mean absolute errors, median absolute errors	Device: optical biometric measurement (IOLMaster); IOLMaster version 5.4 was used to measure the patients' optical biometry by non contact technique.

Outcome Measures

Primary Outcome Measures

1. mean absolute error of Holladay2 formula [6 months]

   IOLMaster version 5.4 was used to measure the patients' optical biometry by non contact technique.

Eligibility Criteria

Criteria

• Ages Eligible for Study: 44 Years to 89 Years
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: Yes

Inclusion Criteria:

• patients with cataract

Exclusion Criteria:

• previous ocular diseases

• previous ocular surgery

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Siriraj Hospital	Bangkok		Thailand	10700

Sponsors and Collaborators

• Mahidol University

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

• Narváez J, Zimmerman G, Stulting RD, Chang DH. Accuracy of intraocular lens power prediction using the Hoffer Q, Holladay 1, Holladay 2, and SRK/T formulas. J Cataract Refract Surg. 2006 Dec;32(12):2050-3.

• Responsible Party: Sabong Srivannaboon, Professor Sabong Srivannaboon, Mahidol University
• ClinicalTrials.gov Identifier: NCT01846078
• Other Study ID Numbers: Si343/2012
• First Posted: May 3, 2013
• Last Update Posted: May 3, 2013
• Last Verified: Apr 1, 2013

• Additional relevant MeSH terms: Cataract; Aphakia

Study Results

No Results Posted as of May 3, 2013