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CompletedNCT01846078Updated May 3, 2013

Accuracy of Holladay 2 Formula in the Absence of Lens Thickness

An interventional study of optical biometric measurement (IOLMaster) in Cataracts, sponsored by Mahidol University. Completed at 1 site in Thailand. Open to participants aged 44 Years to 89 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2013-05-03.

Sponsored by Mahidol University · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
143
Allocation
Not applicable
Ages
44 Years to 89 Years
Sex
All
01

Study summary

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

02

Conditions studied

  • Cataracts

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03

In context

Cataract

1,701 studies on the registry are indexed under Cataract; 230 are open to participants now.

This study's enrollment of 143 is above the median of 80 across 1,155 interventional studies indexed under Cataract.

Browse Cataract studies →

Lead sponsor

Mahidol University is the lead sponsor of 730 studies on the registry; 118 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
44 Years to 89 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • patients with cataract

Exclusion criteria

Exclusion Criteria:

  • previous ocular diseases
  • previous ocular surgery
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
143 participants (actual)

Study arms

  • Experimental
    Mean absolute errors, median absolute errors

    Device: optical biometric measurement (IOLMaster)

Interventions

  • Deviceoptical biometric measurement (IOLMaster)

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

06

What researchers measure

Primary outcomes

  1. mean absolute error of Holladay2 formula

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

    Time frame: 6 months

07

Study locations

1 site
  • Siriraj Hospital
    Bangkok, 10700, Thailand
08

References and documents

Publications

  • Narvaez 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. doi: 10.1016/j.jcrs.2006.09.009. PubMed 17137982 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 3, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01846078
Lead sponsor
Mahidol University
Responsible party
Sabong Srivannaboon (Professor Sabong Srivannaboon, Mahidol University) — Principal investigator
First posted
May 3, 2013
Start date
Jun 2012
Primary completion
Sep 2012
Completion
Dec 2012
Last update
May 3, 2013
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2013. You cannot join it, but the record below documents what was studied.

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