NCT02593669

Brief Summary

A cataract is a clouding of the crystalline lens inside the eye, which leads to a decrease in vision. It is the most prevalent, treatable cause of visual impairment and blindness in the world. Cataract surgery with an intraocular lens (IOL) implant is one of the most common and thought to be the most effective surgical procedure in any field of medicine. In this trial, the investigators aimed to evaluate the effect of cataract surgery on circadian rhythm and sleep as well as the effect of the blue light transmission characteristics of the implanted IOL on sleep.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
10,000

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jan 2016

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 28, 2015

Completed
5 days until next milestone

First Posted

Study publicly available on registry

November 2, 2015

Completed
2 months until next milestone

Study Start

First participant enrolled

January 1, 2016

Completed
2.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2018

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2018

Completed
Last Updated

November 2, 2015

Status Verified

October 1, 2015

Enrollment Period

2.9 years

First QC Date

October 28, 2015

Last Update Submit

October 30, 2015

Conditions

Outcome Measures

Primary Outcomes (3)

  • Change from Post-illumination pupil response (PIPR)

    3 months before the surgery and 3 months after the surgery

  • Change from Objective sleep quality:actigraphy

    3 months before the surgery and 3 months after the surgery

  • Change from Subjective sleep quality: PSQI

    3 months before the surgery and 3 months after the surgery

Study Arms (2)

Neutral IOL

EXPERIMENTAL

Phacoemulsification cataract surgery is performed with neutral IOL implantation.

Procedure: Phacomulsification lens removal cataract surgery with neutral Intraocular lens(IOL) implantationDrug: Subconjunctival dexamethasone and general anesthesiaDrug: Viscoelastic materials

Blue-blocking IOL

EXPERIMENTAL

Phacoemulsification cataract surgery is performed with blue-blocking IOL implantation.

Procedure: Phacomulsification lens removal cataract surgery with blue-blocking Intraocular lens(IOL) implantationDrug: Subconjunctival dexamethasone and general anesthesiaDrug: Viscoelastic materials

Interventions

The phacoemulsification lens removal cataract surgery is performed with neutral IOL.implantation

Neutral IOL

The phacoemulsification lens removal cataract surgery is performed with blue-blocking IOL.implantation.

Blue-blocking IOL

All patients received subconjunctival dexamethasone (2 mg) during surgery, and all surgeries were performed under general anesthesia.

Blue-blocking IOLNeutral IOL

viscoelastic materials are used to protect corneal endothelial cells.

Blue-blocking IOLNeutral IOL

Eligibility Criteria

Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • Bilateral age-related cataract scheduled for cataract surgery

You may not qualify if:

  • Vision-impairing ophthalmic disease: Glaucoma, AMD, DR.et.al
  • Severe systemic disease: Diabetes, Sleep disorder.et.al
  • Vision-impairing complications: Ruptured posterior capsule, Persistent cornea edema.et.al

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Zhongshan Ophthalmic Center, Sun Yat-sen University

Guangzhou, Guangdong, 510060, China

Location

Related Publications (3)

  • Brondsted AE, Sander B, Haargaard B, Lund-Andersen H, Jennum P, Gammeltoft S, Kessel L. The Effect of Cataract Surgery on Circadian Photoentrainment: A Randomized Trial of Blue-Blocking versus Neutral Intraocular Lenses. Ophthalmology. 2015 Oct;122(10):2115-24. doi: 10.1016/j.ophtha.2015.06.033. Epub 2015 Jul 30.

    PMID: 26233628BACKGROUND
  • Ayaki M, Negishi K, Tsubota K. Rejuvenation effects of cataract surgery with ultraviolet blocking intra-ocular lens on circadian rhythm and gait speed. Rejuvenation Res. 2014 Aug;17(4):359-65. doi: 10.1089/rej.2014.1550.

    PMID: 24701992BACKGROUND
  • Ayaki M, Muramatsu M, Negishi K, Tsubota K. Improvements in sleep quality and gait speed after cataract surgery. Rejuvenation Res. 2013 Feb;16(1):35-42. doi: 10.1089/rej.2012.1369.

    PMID: 23145881BACKGROUND

Related Links

MeSH Terms

Conditions

Cataract

Interventions

Drug ImplantsAnesthesia, General

Condition Hierarchy (Ancestors)

Lens DiseasesEye Diseases

Intervention Hierarchy (Ancestors)

Delayed-Action PreparationsDosage FormsPharmaceutical PreparationsAnesthesiaAnesthesia and Analgesia

Study Officials

  • Haotian Lin, M.D., Ph.D

    Zhongshan Ophthalmic Center, Sun Yat-sen University

    PRINCIPAL INVESTIGATOR
  • Yizhi Liu, M.D., Ph.D

    Zhongshan Ophthalmic Center, Sun Yat-sen University

    STUDY CHAIR
  • Weirong Chen, M.D.

    Zhongshan Ophthalmic Center, Sun Yat-sen University

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator, Home for Cataract Children, Zhongshan Ophthalmic Center

Study Record Dates

First Submitted

October 28, 2015

First Posted

November 2, 2015

Study Start

January 1, 2016

Primary Completion

December 1, 2018

Study Completion

December 1, 2018

Last Updated

November 2, 2015

Record last verified: 2015-10

Locations