Iontophoretic Delivery of EGP-437 in Patients Who Have Undergone Cataract Surgery

This will be a Phase 2b, double-masked, multi-site study, in which a total of up to 100 eyes
of up to 100 subject will be enrolled at up to 8 clinical sites in the United States. The
study has 2 different treatment arms consisting of the following iontophoresis treatment
regimen:

Treatment Arm 1, up to 50 subjects will receive the following study treatment:

40 mg/ml dexamethasone phosphate solution delivered by iontophoresis treatment consisting of
4.5 mA-min at 3.0 mA on Day 0 (immediately following cataract surgery), Day 1 (24 hours'
post-cataract surgery), Day 4, and a potential Day 7 treatment that will be administered for
subjects who have ≥11 AC cells per high-power field on slit lamp examination.

Treatment Arm 2, up to 50 subjects will receive the following study treatment:

100 mM sodium citrate buffer solution (placebo) delivered by iontophoresis treatment
consisting of 4.5 mA-min at 3.0 mA on Day 0 (immediately following cataract surgery), Day 1
(24 hours' post-cataract surgery), Day 4, and a potential Day 7 treatment that will be
administered for subjects who have ≥11 AC cells per high-power field on slit lamp
examination.

Subjects will come in for 6 visits over 28 days.

The primary efficacy endpoint (PEP) will evaluate 1) the proportion of subjects with an AC
cell count of zero on Day 7 and 2) the proportion of subjects with a pain score of zero on
Day 1.

Inclusion Criteria:

1. Undergoing unilateral cataract extraction and implantation of a monofocal IOL (at the
time of enrollment)

2. Age 18 to 85 years

3. Receive, understand, and sign a copy of the written informed consent form (ICF)

4. Are able to return for all study visits and willing to comply with all study-related
instructions

Exclusion Criteria:

1. Are undergoing implantation of a multifocal and/or depth enhancing IOL

2. Are undergoing or have just undergone cataract surgery on the study eye that is deemed
complex or may require manipulation of the iris

3. The study eye has a small pupil or iris requiring manipulation due to synechiae and/
Tamsulosin (Flomax®, Boehringer Ingelheim) use

4. Have a Seidel positive wound following surgical procedure despite suture and/or
ReSure® Sealant placement

5. Have had ocular surgery of any kind in the study eye within 3 months prior to baseline
visit (Day 0)

6. Have undergone cataract surgery in the fellow eye within 4 weeks prior to baseline
visit (Day 0) and still require post-operative medications in that fellow eye

7. Are scheduled for surgery in the fellow eye within the study period

8. Have anterior chamber inflammation as measured by slit lamp examination in the study
eye at the baseline visit (Day 0) [Defined as anterior chamber (AC) cell and/or flare
grade > 0]

9. Have history of uveitis or inflammatory disease in the study eye

10. Requires simultaneous supplemental surgery, such as glaucoma procedures or vitrectomy,
in the study eye

11. Have used any topical ocular medication in either eye, other than tear substitute for
dry eye, within the past 2 weeks prior to baseline visit (Day 0)

12. Have used topical corticosteroid or nonsteroidal anti-inflammatory drug (NSAID)
treatment in either eye < 48 hours prior to the baseline visit (Day 0) (excluding the
use of topical NSAIDs, pre-operatively on Day 0 and administered at the clinic site
under the investigator's oversight)

13. Have IOP ≥ 25 mmHg at baseline, a history of glaucoma, and/or require ocular
anti-hypertensive medications

14. Are known corticosteroid IOP responder in study eye

15. Have received systemic administration of corticosteroid and/or immunosuppressants
within the past 14 days prior to baseline visit (Day 0)

16. Have received intravitreal, sub-Tenon, or any periocular corticosteroid treatment in
either eye within the past 6 months prior to baseline visit (Day 0)

17. Have open wounds/skin disease on the forehead area where the iontophoresis return
electrode will be applied

18. Have lesions of the eyelids or the ocular surface impeding the application of the
iontophoresis applicator

19. Have blepharospasm, blepharophimosis, or other eyelid anatomic variations precluding
placement of the iontophoresis applicator

20. Have known allergy to dexamethasone or dexamethasone phosphate or any medication to be
used in this study

21. Have history or diagnosis of ocular herpes, corneal lesion of suspected herpetic
origin that could be worsened with steroid use

22. Have optic neuritis of any origin

23. Have clinically suspected or confirmed central nervous system or ocular lymphoma

24. Have active hyphema, pars planitis, choroiditis, toxoplasmosis scar, vitreous
hemorrhage, and/or clinically significant macular edema (CSME) that would compromise
visual acuity recovery

25. Have severe/serious ocular pathology or medical condition which may preclude study
completion

26. Have pacemaker and/or any other electrical sensitive support system

27. Are pregnant or lactating female, or female of childbearing age and using inadequate
birth control method

28. Have participated in another investigational device or drug study within 30 days of
baseline visit (Day 0) (other clinical trial participation while participating in
EGP-437-009 would be prohibited per protocol)

29. Have previously participated in a study with EGP-437