Safety and Efficacy of HydroLenz for Vitrectomy-Induced Lens Opacities

Safety and Preliminary Efficacy of Two Dose Levels of HydroLenz as a Protectant for Vitrectomy-Induced Lens Opacities in Subjects Undergoing Vitrectomy

The primary objective of this study is to provide safety data for two different dosages of HydroLenz. Secondary objectives are to provide preliminary data to determine whether HydroLenz has the same effect in humans as it does in the porcine model; to confirm the reliability of methods for evaluating lens opacity; and, to acquire information that can be used to design the pivotal study.

Study Overview

• Status: Withdrawn
• Conditions: Pars Plana Vitrectomy
• Intervention / Treatment: Drug: HydroLenz Injection; Other: No HydroLenz Injection

• Study Type: Interventional
• Phase: Phase 1

Contacts and Locations

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 61 years and older (Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Male or female of any race.
2. 65 years of age or older.
3. Study eye is phakic and scheduled for pars plana vitrectomy (23, 25, or 27 gauge) for epiretinal membrane or vitreomacular traction surgery.
4. Willingness and ability to comply with schedule for follow-up visits.
5. Subject understands the study requirements and the treatment procedures and provides signed, written informed consent obtained in accordance with the institutional review board (or ethics committee) requirements for this first-in-man early feasibility study.

Exclusion Criteria:

1. Aphakic or pseudophakic lens status in either or both eyes.
2. History of previous cataract surgery in either eye.
3. Evidence of congenital cataract.

4. Study eye with corneal opacity of one of the following LOCS III grades or condition that would confound the LOCS III grading results:

   1. Inability to grade opacities in the study eye with LOCS III at the baseline exam;
   2. Inability to dilate pupil to at least 6.0 mm;
   3. LOCS III grade ≥ 2 for nuclear opalescence, cortical lens opacities, or posterior subcapsular lens opacities in the study eye at baseline.
5. Diabetic retinopathy or macular edema in the study eye.
6. Retinal vascular disease or retinopathy in the study eye.
7. History of previous intravitreal injections in the study eye.
8. History of previous subconjunctival injections in the study eye.
9. History of previous radiation in the study eye.
10. History of systemic, periocular, inhaled, or chronic topical corticosteroids.
11. Previous laser prophylaxis for retinal tear/hole/lattice degeneration in the study eye.
12. Previous pneumatic retinopexy or retinal detachment repair in the study eye.
13. Previous vitrectomy in the study eye.
14. Previous laser treatment anywhere in the study eye (trabecular meshwork, iris, retina, macula).
15. Use of silicone oil, air or gas tamponade during the vitrectomy in the study eye prior to injection of the HydroLenz.
16. Use of binocular indirect ophthalmoscopy laser during the procedure (endolaser is permitted).
17. History of any previous ocular surgery in the study eye.
18. Any ocular trauma resulting in lens opacity or subluxation of the lens in the study eye.
19. Iatrogenic lens trauma during surgery prior to injection of the HydroLenz.
20. Surgical plan for the vitrectomy includes planned glaucoma filtering or tube-shunt procedure or any procedure affecting the lens.
21. Female patients who are pregnant or lactating or plan to become pregnant during the course of the study.
22. A known sensitivity to study medications for which no alternative medication can be - prescribed.
23. Presence or history of any other condition or finding that, in the investigator's opinion, makes the patient unsuitable as a candidate for the HydroLenz treatment or study participation or may confound the outcome of the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Low dose HydroLenz treatment	Drug: HydroLenz Injection; The HydroLenz injection will be administered at the conclusion of the vitrectomy procedure on the operative day
Experimental: High dose HydroLenz treatment	Drug: HydroLenz Injection; The HydroLenz injection will be administered at the conclusion of the vitrectomy procedure on the operative day
Placebo Comparator: Control, i.e., no HydroLenz treatment	Other: No HydroLenz Injection; No HydroLenz injection will be administered at the conclusion of the vitrectomy procedure on the operative day.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Evaluation of Changes in Lens Opacities	The Lens Opacity Classification System, Version III (LOCS III) and the rate of lens related (cataract) surgery will be used to evaluate the lens opacities.	Baseline and 6 Months
Evaluation of Changes in Lens Opacities	The Lens Opacity Classification System, Version III (LOCS III) and the rate of lens related (cataract) surgery will be used to evaluate the lens opacities.	Baseline and 12 Months
Changes in BSCVA	Number of eyes losing more than 2 lines of BSCVA	Baseline and 6 Months
Changes in BSCVA	Number of eyes losing more than 2 lines of BSCVA	Baseline and 12 Months

Collaborators and Investigators

• Sponsor: PromiSight, LLC

Study record dates

Study Major Dates

• Study Start (Estimated): January 1, 2024
• Primary Completion (Estimated): January 1, 2025
• Study Completion (Estimated): January 1, 2025

Study Registration Dates

• First Submitted: October 18, 2022
• First Submitted That Met QC Criteria: October 21, 2022
• First Posted (Actual): October 25, 2022

Study Record Updates

• Last Update Posted (Actual): July 25, 2025
• Last Update Submitted That Met QC Criteria: July 22, 2025
• Last Verified: July 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Eye Diseases; Lens Diseases; Cataract
• Other Study ID Numbers: HL-001

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No