CataractNCT02362334
IOL Power Calculation Using Dual Schiempflug Analyzer
An observational study of Cataract, run by Chuncheon Sacred Heart Hospital at 1 site in South Korea.
Trial summary
This study evaluates the various ocular parameters which are necessary for ocular biometry and the calculated IOL powers using both dual Schiempflug analyzer and optical low-coherence refelctometry. Read more about this study
- Who is it for?
- Ages 20 years and older
- Conditions the study is for
- Cataract
- How many people
- 140 participants
- Where
- 1 siteSouth Korea
- Study dates
- Oct 2014to Feb 2015
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: 140 eyes of patients who scheduled for cataract surgery
Who may be able to join
- axial length between 21.0 and 27.0 mm
- older than 20 years old
Who cannot join
- other ophthalmic diseases such as severe dry eye, glaucoma, and age-related macular degeneration
- previous ophthalmic surgery including cataract surgery, and refractive surgery
- very dense media which cannot be measured by the optical biometries
- severe zonulysis
Trial locations and contacts
1 site in 1 country.
South Korea1 site, 1 recruiting
- Recruiting
Chuncheon Sacred Heart Hospital
Chuncheon, 200-798
Kyung Eun Han, MD, 82-10-3084-6646, hkeoph@gmail.com
About this study
Official title: Precision of Optical Biometry and Intraocular Lens Power Calculation Using Dual Schiempflug Analyzer
This study evaluates the various ocular parameters which are necessary for ocular biometry and the calculated IOL powers using both dual Schiempflug analyzer and optical low-coherence refelctometry.
Read the detailed description
The measured keratometry, axial length, anterior chamber depth, lens thickness, white-to-white corneal diameter, and calculated IOL powers using various formulas including Hoffer Q, Holladay I, SRK II and SRK T measured by dual Schiempflug analyzer and optical low-coherence refelctometry will be compared.
- Conditions
- Cataract
- Keywords
- dual Sheimpflug analyzer, intraocular lens power, optical low-coherence reflectometry
- Medical subject headings
- Cataract
What is being measured
The primary outcome is the main question the study is designed to answer.
Ocular parameters
Parameters measured using two devices were compared at a single point
Measured: Single point
Calculated IOL powers
Calculated IOL powers using two devices were compared at a single point
Measured: Single point
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Feb 2015 (estimated)
- Study startOct 2014
- Primary completionFeb 2015 (estimated)
- Study completionFeb 2015 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for CataractStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Time perspective
- Prospective
- Enrolment
- 140 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Chuncheon Sacred Heart Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Kyung Eun Han, MD, Study chair, Clinical associate professor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02362334
- Sponsor's protocol ID
- ChuncheonSHH
- Status last verified
- Oct 2014
- First submitted
- 9 Feb 2015
- Last updated
- 18 Feb 2015
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 18 Feb 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Precision of Optical Biometry and Intraocular Lens Power Calculation Using Dual Schiempflug Analyzer
- ClinicalTrials.gov ID
- NCT02362334
- Acronym / sponsor ID
- ChuncheonSHH
- Conditions
- Cataract
- Keywords
- dual Sheimpflug analyzer, intraocular lens power, optical low-coherence reflectometry
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 140 participants (estimated)
- Lead sponsor
- Chuncheon Sacred Heart HospitalUniversity, hospital or other
- Study start
- Oct 2014
- Primary completion
- Feb 2015 (estimated)
- Study completion
- Feb 2015 (estimated)
- First posted
- 12 Feb 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study evaluates the various ocular parameters which are necessary for ocular biometry and the calculated IOL powers using both dual Schiempflug analyzer and optical low-coherence refelctometry.
Detailed description
The measured keratometry, axial length, anterior chamber depth, lens thickness, white-to-white corneal diameter, and calculated IOL powers using various formulas including Hoffer Q, Holladay I, SRK II and SRK T measured by dual Schiempflug analyzer and optical low-coherence refelctometry will be compared.
Study design
- Time perspective
- Prospective
Who may qualify
- Ages
- 20 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- 140 eyes of patients who scheduled for cataract surgery
Key inclusion criteria (2 listed)
- axial length between 21.0 and 27.0 mm
- older than 20 years old
Key exclusion criteria (4 listed)
- other ophthalmic diseases such as severe dry eye, glaucoma, and age-related macular degeneration
- previous ophthalmic surgery including cataract surgery, and refractive surgery
- very dense media which cannot be measured by the optical biometries
- severe zonulysis
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Ocular parameters
Time frame: Single point
Parameters measured using two devices were compared at a single point
Calculated IOL powers
Time frame: Single point
Calculated IOL powers using two devices were compared at a single point
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Feb 2015.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Kyung Eun Han, MD study chair
Clinical associate professor
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Cataract, run by Chuncheon Sacred Heart Hospital at 1 site in South Korea.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 18 Feb 2015. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Kyung Eun Han, MD (82-10-3084-6646, hkeoph@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Ocular parameters (time frame: Single point). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Feb 2015; AzTrials last refreshed its copy on 29 Oct 2026.