EyeKon Medical Inc. Capsular Tension Ring Study

Cataract Extraction Clinical Trial

— CTR  

Official title:

EyeKon Medical, Inc. Capsular Tension Ring Clinical Study

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT02332369
• Other study ID #: EyeKon CTR--01
• Status: Recruiting
• Phase: N/A
• Start date: February 2005
• Est. completion date: December 2023

Study information

• Verified date: March 2023
• Source: EyeKon Medical, Inc.
• Contact: Barry L Bowyer, MSPH
• Phone: 7277930170
• Email: barry[@]eyekonmedical.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study evaluates the safety and effectiveness of a capsular tension ring (CTR) when used during cataract surgery. Capsular Tension Rings are used during intraocular lens implantation to give added support in order to keep the intraocular lens well centered, especially in eyes with weak or partially absent zonules. In many cases, capsular tension rings allow a lens to be successfully implanted into an eye which otherwise could not have supported an intraocular lens.

Description:

The clinical study of the CTR-10 and CTR-12 Capsular Tension Rings is to be conducted with the following objectives: 1. Determine the ability of the device to maintain the shape of the capsular bag and therefore keep the intraocular lens centered; 2. Determine post-operative visual acuity of patients receiving the capsular tension ring as a secondary method of determining the efficacy; 3. Describe the occurrence and time course of postoperative complications and adverse reactions for capsular tension ring implant subjects; 4. Describe the occurrence of postoperative complications for the implant group and their relationship to ocular complications. 5. Identify groups within the implant study population that are at "high risk" of particular complications. 6. Collect and analyze against those historical controls published by FDA data on: 1. Overall Visual Acuity 2. Best Case Visual Acuity 3. Cumulative Hyphema 4. Cumulative Macular Edema 5. Cumulative Retinal Detachment 6. Cumulative Pupillary Block 7. Cumulative Lens Dislocation 8. Cumulative Endophthalmitis 9. Cumulative Hypopyon 10. Cumulative Surgical Reintervention 11. Persistent Macular Edema 12. Persistent Corneal Edema 13. Persistent Iritis 14. Persistent Raised IOP Requiring treatment 15. Frequency and degree of posterior capsule opacification The investigational plan for the clinical study of capsular tension rings is designed to satisfy the requirements of the Investigational Device Exemption (IDE) regulations, which require a well-controlled clinical trial with ongoing monitoring to evaluate the safety and efficacy of the intraocular lenses. The study will consist of adult patients who will be enrolled into the study. The results of these implants will be carefully monitored for approximately twelve (12) months.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 125
• Est. completion date: December 2023
• Est. primary completion date: December 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• The patient is in good general and ocular health, having a vision-reducing cataract in the intended operative eye.
• The intended operative eye has a Snellen best corrected visual of 20/40 or worse for distance or the refraction worsens to this level with glare testing.
• The patients' worse seeing Eye is 20/70 or better.
• The patient is willing and able to complete all required postoperative visits.
• The patient is willing to sign a statement of informed consent.
• The patient is at least 21 years old.
• The patient requires cataract surgery with IOL implantation.
• The patient has observed or suspected weakened, torn, missing or otherwise compromised zonules (torn or missing estimated not to exceed one-third of the capsular bag diameter) due to Pseudoexfoliation Syndrome, Marfans Syndrome, trauma or other zonular compromising condition.
• The capsule is intact during insertion.

Exclusion Criteria:

• Only one functional eye
• Capsular bag tearing beyond the point where the surgeon thinks it is in the best interest of the patient to have a capsular ring implanted
• Significant zonular didlysis during surgery
• Preoperative ocular infection
• Ocular inflammation or uveitis
• Amblyopia
• Aniridia
• Congenital cataracts
• Cataracts due to rubella
• Corneal disease
• Diabetes
• Preoperative intraocular pressure over 21 mm Hg
• Iritis
• Iris atrophy
• Pseudophakic lens exchange
• Microphthalmia
• Optic atrophy
• Macular degeneration
• Retinal detachment
• Retinal degeneration
• Vitritis
• Flat anterior chamber
• Other conditions as noted by the surgeon which may compromise the safety of the patient or the accuracy of the study

Related Conditions & MeSH terms

• Cataract
• Cataract Extraction

Intervention

Device:
• Capsular Tension Ring

Locations

Country	Name	City	State
United States	Brazosport Eye Institute	Lake Jackson	Texas
United States	Stephenson Eye Associates	Venice	Florida
United States	Comprehensive Eye Care Ltd.	Washington	Missouri

Sponsors (1)

Lead Sponsor	Collaborator
EyeKon Medical, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Visual Acuity	Best case visual acuity at 1 year of follow-up based upon LogMar score.	At all pre/post op CFR's for 1 year.
Secondary	Adverse Events	Adverse events will be compared to the FDA historical grid and must be less than or equal to those shown in the grid on a percentage of patients enrolled basis.	1 Year