Age-related CataractNCT03340389
Dysfunctional Lens Index Serves as a Novel Surgery Decision Maker for Age-related Cataracts
A study testing a ray-tracing aberrometry in people with Age-related Cataract, run by Wenzhou Medical University at 1 site in China.
Trial summary
To study the correlations among the dysfunctional lens index (DLI), Lens Opacities Classification System III (LOCS III) nuclear opalescence grading score, preoperative corrected distance visual acuity (CDVA), the objective scatter index (OSI) and Scheimpflug based average lens density in age-related cataracts. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Age-related Cataract
- What is being tested?
- a ray-tracing aberrometry
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 siteChina
- Study dates
- 1 Sep 2017to 1 Dec 2018
- Phase
- Interventional
- 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 Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- patients with age-related cataracts
Who cannot join
- any corneal opacity, corneal dystrophies, retinal anomalies, a history of ocular surgery or laser treatment, a LOCS III grade of cortical opacity ≥ 3.0 or posterior subcapsular cataract ≥ 2.0.
Trial locations and contacts
1 site in 1 country.
China1 site, 1 recruiting
- Recruiting
Eye Hospital of Wenzhou Medical College
Wenzhou, Zhejiang, 325027
zhao Yinying, PhD, 13957763247, ginger146@126.com
About this study
To study the correlations among the dysfunctional lens index (DLI), Lens Opacities Classification System III (LOCS III) nuclear opalescence grading score, preoperative corrected distance visual acuity (CDVA), the objective scatter index (OSI) and Scheimpflug based average lens density in age-related cataracts. To investigate the potential of the DLI as a novel surgery decision maker via the Operating Characteristic (ROC) curve analysis.
Read the detailed description
Each patient received a comprehensive eye examination, including corrected distance visual acuity (CDVA) preoperatively and the day after surgery, subjective refraction, slit-lamp evaluation, noncontact tonometry (TX-F; Cannon, Tokyo, Japan), and dilated fundus examination. According to the surgery decision made by the three surgeons based on the slit lamp biomicroscopy and CDVA, patients were divided into two groups: Surgical and Non-Surgical. The results of the DLI, OSI and average lens density (ALD) were masked to the surgeons. The DLI, OSI, average lens density, LOCS III nuclear opalescence grading, and preoperative CDVA were obtained. Correlations among these parameters were analyzed. ROC curves were used to analyze DLI values to determine a value to separate between surgical and non-surgical cataracts.
- Conditions
- Age-related Cataract
- Being tested
- a ray-tracing aberrometry
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
a ray-tracing aberrometryProcedure or surgery
The Dysfunctional Lens Index is obtained by a ray-tracing aberrometry
| Study group | Role | What they receive |
|---|---|---|
| cataract surgery | Experimental | cataract extraction and intraocular implantation Receives: Procedure: a ray-tracing aberrometry |
What is being measured
The primary outcome is the main question the study is designed to answer.
Dysfunctional lens index
The DLI is an objective lens performance metric derived from internal higher order aberrations (HOAs), pupil size, and contrast sensitivity data
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Nov 2017
- Study start1 Sep 2017
- Primary completion1 May 2018 (estimated)
- Study completion1 Dec 2018 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Age-related 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Screening
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 60 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Wenzhou Medical University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, yin ying zhao, Wenzhou Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03340389
- Sponsor's protocol ID
- DLI_HZ
- Status last verified
- Nov 2017
- First submitted
- 6 Nov 2017
- Last updated
- 13 Nov 2017
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Nov 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Dysfunctional Lens Index Serves as a Novel Surgery Decision Maker for Age-related Cataracts
- ClinicalTrials.gov ID
- NCT03340389
- Acronym / sponsor ID
- DLI_HZ
- Conditions
- Age-related Cataract
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 60 participants (estimated)
- Lead sponsor
- Wenzhou Medical UniversityUniversity, hospital or other
- Study start
- 1 Sep 2017 (actual)
- Primary completion
- 1 May 2018 (estimated)
- Study completion
- 1 Dec 2018 (estimated)
- First posted
- 13 Nov 2017 (actual)
- 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.
To study the correlations among the dysfunctional lens index (DLI), Lens Opacities Classification System III (LOCS III) nuclear opalescence grading score, preoperative corrected distance visual acuity (CDVA), the objective scatter index (OSI) and Scheimpflug based average lens density in age-related cataracts. To investigate the potential of the DLI as a novel surgery decision maker via the Operating Characteristic (ROC) curve analysis.
Detailed description
Each patient received a comprehensive eye examination, including corrected distance visual acuity (CDVA) preoperatively and the day after surgery, subjective refraction, slit-lamp evaluation, noncontact tonometry (TX-F; Cannon, Tokyo, Japan), and dilated fundus examination. According to the surgery decision made by the three surgeons based on the slit lamp biomicroscopy and CDVA, patients were divided into two groups: Surgical and Non-Surgical. The results of the DLI, OSI and average lens density (ALD) were masked to the surgeons. The DLI, OSI, average lens density, LOCS III nuclear opalescence grading, and preoperative CDVA were obtained. Correlations among these parameters were analyzed. ROC curves were used to analyze DLI values to determine a value to separate between surgical and non-surgical cataracts.
Study design
- Primary purpose
- Screening
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| cataract surgery | Experimental | Procedure: a ray-tracing aberrometrycataract extraction and intraocular implantation |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (1 listed)
- patients with age-related cataracts
Key exclusion criteria (1 listed)
- any corneal opacity, corneal dystrophies, retinal anomalies, a history of ocular surgery or laser treatment, a LOCS III grade of cortical opacity ≥ 3.0 or posterior subcapsular cataract ≥ 2.0.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| a ray-tracing aberrometryThe Dysfunctional Lens Index is obtained by a ray-tracing aberrometry | Procedure or surgery | cataract surgery |
Primary outcome
Dysfunctional lens index
Time frame: 6 months
The DLI is an objective lens performance metric derived from internal higher order aberrations (HOAs), pupil size, and contrast sensitivity data
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Nov 2017.
- Individual participant dataSharing planned: No
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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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing a ray-tracing aberrometry in people with Age-related Cataract, run by Wenzhou Medical University at 1 site in China.
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 1 inclusion and 1 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 13 Nov 2017. 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 China. 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 Zhangliang Li, MD (+86-571-88185666, lizhangliang0328@126.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Dysfunctional lens index (time frame: 6 months). 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 13 Nov 2017; AzTrials last refreshed its copy on 30 Oct 2026.