A Multicenter, Randomized, Double-Masked, Placebo-Controlled Pilot Study to Evaluate the Efficacy and Safety of ZOC2017217 in Subjects With Age-Related Cataract

Inclusion criteria

• Inclusion Criteria:

• Are ≥50 years of age.
• Willing and able to provide informed consent and provide relevant privacy authorization(s).
• Willing and able to comply with study requirements and visit schedule.
• Able to successfully administer ophthalmic solution or have an appropriate designee (e.g., family member, health care professional) who can administer ophthalmic solution.
• Have high-contrast BCDVA under photopic conditions ≥35 letters and ≤67 letters at Visit 1 (Screening).
• Have calculated baseline BCDVA at Visit 2 (Randomization; Baseline; Day 1) that simultaneously meets Randomization Criteria.
• Have, in the opinion of the Investigator, age-related cataract (cortical, nuclear, posterior, mixed) in one or both eyes, as assessed using digital imaging after adequate mydriasis.

A. C < 5.0 B. N < 5.0 (both nuclear opalescence [NO] and nuclear color [NC]) C. P < 1.0

• Have, in the opinion of the Investigator, sufficiently clear ocular media and adequate pupillary dilation to permit quality fundus imaging.

Exclusion criteria

• Ocular Exclusion Criteria:

Study Eye:

• Have a history of ocular trauma.
• Have a history of intraocular surgery, laser treatment, or corneal surgery. Note: Corneal refractive surgery more than 2 years prior to Visit 1 (Screening) is allowed.
• Have, in the opinion of the Investigator, a cataract other than age-related cataract (e.g., traumatic, concurrent, metabolic, drug and toxic, radiation).
• Have, in the opinion of the Investigator, any ocular disease or condition that is not stably controlled or is likely to affect central vision, including but not limited to:

Glaucoma Elevated IOP (e.g., ≥30 mmHg) Optic neuropathy Age-related macular degeneration Diabetic retinopathy Retinal artery or vein occlusion Macular hole Retinal detachment Epiretinal membrane involving the fovea High myopia (i.e., spherical equivalent of subjective refraction ≥ -7.0 D) High hyperopia (i.e., spherical equivalent of subjective refraction > +4.00 D)

• Have overall CFS >3.
• Have active eye infection or inflammation, including but not limited to conjunctivitis, keratitis, scleritis, or endophthalmitis.

Note: Mild inflammation (CFS <3 on the NEI scale) from ocular surface disease, including dry eye disease, is allowed.

Non-study Eye:

• Have high-contrast BCDVA under photopic conditions ≤19 letters.

Either Eye:

• Have planned or be planning to undergo cataract surgery during the study. Note: A history of cataract surgery in the non-study eye is allowed for subjects who commit to not undergoing additional cataract surgery during the study.
• Have newly developed or not stably controlled uveitis within the 6 months prior to Visit 1 (Screening).
• Unwilling or unable to discontinue wearing contact lenses 14 days prior to Visit 2 (Randomization; Baseline; Day 1), and during the study conduct.
• Requires, is likely to require, or is unwilling to discontinue the use of prohibited medications or procedures within 14 days prior to Visit 1 (Screening), or during the study conduct.

A. Other ocular surgeries that may affect visual function, including but not limited to photodynamic therapy. B. Desferrioxamine, hydroxychloroquine, chloroquine, tamoxifen, phenothiazines, ethambutol, or other agents known to cause crystalline lens, retinal, or optic nerve toxicity.

C. Chlorpromazine or corticosteroids that may aggravate crystalline lens opacity.

Note: Topical non-ocular corticosteroids are allowed.

General Exclusion Criteria:

• Have a severe or not stably controlled systemic disease that may interfere with study participation or confound interpretability (e.g., acute phase of chronic obstructive pulmonary disease; congestive heart failure; severe hepatic or renal insufficiency; malignant tumors currently being treated with chemotherapy).
• Have diabetes mellitus with HbA1c ≥7.5%.
• Have hypertension that is not stably controlled at Visit 1 (Screening) A. Systolic blood pressure: >180 mmHg B. Diastolic blood pressure: >100 mmHg after standard of care
• Have participated or are planning to participate in a clinical study for an investigational drug/medical device within 30 days prior to Visit 1 (Screening), or during the study conduct.
• Are pregnant, nursing, or planning a pregnancy during the study.
• Unwilling or unable to use an acceptable method of contraception throughout the study if a woman of childbearing potential (WOCBP).
• Unwilling or unable to use an acceptable method of contraception throughout the study if a male sexual partner of a WOCBP.
• Have a family member or household member enrolled in the study.
• Have any condition, in the opinion of the Investigator, that makes the subject unsuitable for study participation.