journal article·2026-06-01Open access

Implantable ocular therapeutic systems: an insight into their clinical potential in the long-term treatment of ocular diseases

Hyeonji Kim, Nae-Won Kang, Wen Hong, Sajjad Abdollahramezani, Gia-Han Ngo, Daanyal Raja, Olivia Peters, Vinit B Mahajan, David Myung, Charles DeBoer

Biofabrication· Volume 18· Issue 2

Abstract

Abstract Despite the rapid pace of biomedical engineering research, translating developed products into clinical practice remains challenging due to regulations, manufacturing, and long-term in vivo safety. The eye offers advantageous features to lower translational hurdles, making it an ideal clinical target and an approachable testbed for biofabricated implants. However, eyes also have anatomical and physiological barriers that hinder conventional ophthalmic delivery routes, leading to poor drug bioavailability. Advances in biofabrication and biomaterials used in ophthalmic therapeutic implants have the potential to address the current challenges. This review will explore biomaterials, biofabrication methods, and possible ocular implantation sites from the perspective of developing effective therapeutic implants. It also examines clinically available products and current clinical trials, along with recent advancements and next-generation technologies in ophthalmic therapeutic delivery implants. This review aims to provide insights that facilitate the translation of emerging ocular therapeutics into clinically available treatments.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Ocular Disorders and Treatments · Advanced Drug Delivery Systems · Corneal Surgery and Treatments

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (100+)

Show source-provided references
1. Clinical outcomes in real‐world patients with bifurcation lesions receiving Xience V everolimus‐eluting stents: four‐year results from the Xience V USA study10.1002/ccd.26217 ↗
2. The efficacy of Apligraf in the treatment of diabetic foot ulcers10.1097/01.prs.0000222534.79915.d3 ↗
3. Clinical translation of personalized bioengineered implant scaffolds10.1038/s44222-024-00269-z ↗
4. Hydrogel-based ocular drug delivery systems: emerging fabrication strategies, applications, and bench-to-bedside manufacturing considerations10.1016/j.jconrel.2019.05.034 ↗
5. Immunology and pathology in ocular drug development10.1177/0192623320978396 ↗
6. Ocular drug delivery10.1208/s12248-010-9183-3 ↗
7. Advances in ocular drug delivery systems10.1038/s41433-020-0809-0 ↗
8. Implantable sustained-release drug deliver systems: a revolution for ocular therapeutics10.1007/s10792-023-02637-x ↗
9. Pharmacokinetic aspects of retinal drug delivery10.1016/j.preteyeres.2016.12.001 ↗
10. Biopolymeric coatings for local release of therapeutics from biomedical implants10.1002/advs.202207603 ↗
11. Sustained release of voriconazole using 3D-crosslinked hydrogel rings and rods for use in corneal drug delivery10.3390/gels9120933 ↗
12. Macrolide-loaded nanofibrous inserts with polycaprolactone and cellulose acetate base for sustained ocular delivery: pharmacokinetic study in Rabbit’s eye10.1016/j.ijpharm.2024.124699 ↗
13. Materials for intraocular lenses (IOLs): review of developments to achieve biocompatibility10.1515/epoly.2009.9.1.1466 ↗
14. Synthesis of MA POSS–PMMA as an intraocular lens material with high light transmittance and good cytocompatibility10.1039/C4RA08060B ↗
15. Considerations for polymers used in ocular drug delivery10.3389/fmed.2021.787644 ↗
16. Polymeric materials for eye surface and intraocular applications10.1021/acs.biomac.0c01525 ↗
17. Intraocular sustained drug delivery using implantable polymeric devices10.1016/j.addr.2005.09.005 ↗
18. Drug delivery from ocular implants10.1517/17425247.3.2.261 ↗
19. A comparison of a new polypropylene suture with Prolene10.1002/jab.770040209 ↗
20. Development of a new polypropylene‐based suture: plasma grafting, surface treatment, characterization, and biocompatibility studies10.1002/mabi.201000298 ↗
21. Silicone‐based biomaterials for biomedical applications: antimicrobial strategies and 3D printing technologies10.1002/app.50969 ↗
22. Application of silicone in ophthalmology: a review10.3390/ma17143454 ↗
23. Ocular biomaterials and implants10.1016/S0142-9612(00)00237-4 ↗
24. Ultrasoft silicone gels with tunable refractive index for traction force microscopy10.1039/D4SM00016A ↗
25. Significant improvement of mechanical properties for polyvinyl alcohol film prepared from freeze/thaw cycled gel10.4236/ojopm.2013.34018 ↗
26. A comprehensive review on polymeric hydrogel and its composite: matrices of choice for bone and cartilage tissue engineering10.1016/j.jiec.2020.06.017 ↗
27. Enhanced mechanical properties of PVA hydrogel by low-temperature segment self-assembly vs. freeze–thaw cycles10.3390/polym15183782 ↗
28. Polymeric implants for the treatment of intraocular eye diseases: trends in biodegradable and non-biodegradable materials10.3390/pharmaceutics13050701 ↗
29. Biomaterials of PVA and PVP in medical and pharmaceutical applications: perspectives and challenges10.1016/j.biotechadv.2018.11.008 ↗
30. Application of hydrogel template strategy in ocular drug delivery
31. Poly (2-hydroxyethyl methacrylate) hydrogels for contact lens applications–a review
32. New hydrophobic IOL materials and understanding the science of glistenings10.3109/02713683.2014.978476 ↗
33. pHEMA: an overview for biomedical applications10.3390/ijms22126376 ↗
34. pHEMA hydrogels: devices for ocular drug delivery10.4103/2278-344X.107844 ↗
35. An overview of poly (lactic-co-glycolic) acid (PLGA)-based biomaterials for bone tissue engineering10.3390/ijms15033640 ↗
36. PLGA erosion: solubility-or diffusion-controlled?10.1007/s11095-010-0232-5 ↗
37. Recent advances in intraocular sustained-release drug delivery devices10.1016/j.drudis.2019.05.031 ↗
38. Critical appraisal of the clinical utility of the dexamethasone intravitreal implant (Ozurdex®) for the treatment of macular edema related to branch retinal vein occlusion or central retinal vein occlusion10.2147/OPTH.S13775 ↗
39. Characterization of biodegradable microsphere-hydrogel ocular drug delivery system for controlled and extended release of ranibizumab10.1167/tvst.8.1.12 ↗
40. Biodegradable microsphere-hydrogel ocular drug delivery system for controlled and extended release of bioactive aflibercept in vitro10.1080/02713683.2018.1533983 ↗
41. Development of a novel bioerodible dexamethasone implant for uveitis and postoperative cataract inflammation10.1016/j.jconrel.2013.01.007 ↗
42. Pharmacokinetics and efficacy of bioerodible dexamethasone implant in concanavalin A-induced uveitic cataract rabbit model10.1007/s11095-014-1410-7 ↗
43. NDA 211911 Durysta (bimatoprost implant) for intracameral administration
44. Ocular application of electrospun materials for drug delivery and cellular therapies10.1016/j.drudis.2023.103676 ↗
45. Physical and mechanical properties of PLA, and their functions in widespread applications—a comprehensive review10.1016/j.addr.2016.06.012 ↗
46. Intravitreal devices for the treatment of vitreous inflammation10.1155/2012/126463 ↗
47. Biocompatibility, biodegradation and excretion of polylactic acid (PLA) in medical implants and theranostic systems10.1016/j.cej.2018.01.010 ↗
48. The potential for foreign body reaction of implanted poly-l-lactic acid: a systematic review10.3390/polym16060817 ↗
49. Phase 3, randomized, 20-month study of the efficacy and safety of bimatoprost implant in patients with open-angle glaucoma and ocular hypertension (ARTEMIS 2)10.1007/s40265-021-01624-9 ↗
50. Biology of the corneal endothelium in health and disease10.1038/sj.eye.6700559 ↗
51. Mechanical and microstructural properties of polycaprolactone scaffolds with 1-D, 2-D, and 3-D orthogonally oriented porous architectures produced by selective laser sintering10.1016/j.actbio.2010.02.002 ↗
52. Synthesis of polycaprolactone: a review10.1039/b820162p ↗
53. Fabrication and characterisation of 3D-printed triamcinolone acetonide-loaded polycaprolactone-based ocular implants10.3390/pharmaceutics15010243 ↗
54. Use of polycaprolactone in corneal tissue engineering: a review10.1016/j.mtcomm.2021.102402 ↗
55. Biocompatibility and biodegradation studies of subconjunctival implants in rabbit eyes10.1371/journal.pone.0022507 ↗
56. Poly-ϵ-caprolactone intravitreous devices: an in vivo study10.1167/iovs.08-2969 ↗
57. Microfabricated drug delivery devices: design, fabrication, and applications10.1002/adfm.201703606 ↗
58. Application of micro-and nano-electromechanical devices to drug delivery10.1007/s11095-006-9906-4 ↗
59. Reservoir-based drug delivery systems utilizing microtechnology10.1016/j.addr.2012.02.005 ↗
60. Translatable high drug loading drug delivery systems based on biocompatible polymer nanocarriers10.1021/acs.biomac.8b00218 ↗
61. Thiolated gellan gum/polyethylene glycol diacrylate hydrogels containing timolol maleate-loaded chitosan nanoparticles for ophthalmic delivery10.1088/1748-605X/adb555 ↗
62. Extending drug release from implants via transcutaneous refilling with solid therapeutics10.1002/adtp.202100214 ↗
63. In vitro and in vivo evaluation of novel implantation technology in hydrogel contact lenses for controlled drug delivery10.1016/j.jconrel.2016.02.012 ↗
64. Refillable intraocular drug-eluting implant10.1021/acsami.5c03985 ↗
65. Optimization of dip-coating methods for the fabrication of coated microneedles for drug delivery10.1016/j.jddst.2019.101464 ↗
66. Stereolithographic rapid prototyping of clear, foldable, non-refractive intraocular lens designs: a proof-of-concept study10.1080/02713683.2024.2344164 ↗
67. Optimization of the fused deposition modeling-based fabrication process for polylactic acid microneedles10.1038/s41378-021-00284-9 ↗
68. 3D printed punctal plugs for controlled ocular drug delivery10.3390/pharmaceutics13091421 ↗
69. Integrated microsystems for controlled drug delivery10.1016/j.addr.2003.08.012 ↗
70. Nanofibers in ocular drug targeting and tissue engineering: their importance, advantages, advances, and future perspectives10.3390/pharmaceutics15041062 ↗
71. Contact lens as an emerging platform for ophthalmic drug delivery: a systematic review10.1016/j.ajps.2023.100847 ↗
72. Improved release of triamcinolone acetonide from medicated soft contact lenses loaded with drug nanosuspensions10.1016/j.ijpharm.2017.03.082 ↗
73. Microparticles produced by the hydrogel template method for sustained drug delivery10.1016/j.ijpharm.2013.11.058 ↗
74. Biomimetic accommodating intraocular lens using a valved deformable liquid balloon10.1109/TBME.2015.2484379 ↗
75. Self-implantable double-layered micro-drug-reservoirs for efficient and controlled ocular drug delivery10.1038/s41467-018-06981-w ↗
76. Evaluation of refillable drug-eluting intraocular implant
77. Design and validation of a low-cost automated dip-coater system for laboratory applications10.3390/automation6040075 ↗
78. Coating metal–organic frameworks (MOFs) and associated composites on electrodes, thin film polymeric materials, and glass surfaces10.3390/nano15151187 ↗
79. Chitosan-based biomaterials: insights into chemistry, properties, devices, and their biomedical applications10.3390/md21030147 ↗
80. Enhancement and wettability of self-assembled GO sheets as interfacial layers of CF/PI composites10.1039/c3ra46881j ↗
81. Dip-coating fabrication of all-polymer multilayer photonic crystals through 3D printer conversion10.1021/acsapm.4c04077 ↗
82. Dip-coating for fibrous materials: mechanism, methods and applications10.1007/s10971-016-4197-7 ↗
83. Continuous formation of supported cubic and hexagonal mesoporous films by sol–gel dip-coating10.1038/38699 ↗
84. Dip–spin coating of reticulated vitreous carbon with composite materials to act as an electrode for 3D microstructured lithium ion batteries10.1016/j.jpowsour.2012.09.103 ↗
85. A parylene bellows electrochemical actuator for intraocular drug delivery
86. Controlled delivery of antiangiogenic drug to human eye tissue using a MEMS device
87. Self-shrinking soft demoulding for complex high-aspect-ratio microchannels10.1038/s41467-022-32859-z ↗
88. A novel technique for quality control of microinjection molding10.3390/mi17010074 ↗
89. Fabrication methods for microfluidic devices: an overview10.3390/mi12030319 ↗
90. Infill-modulated, bioerodible, and biocompatible ocular inserts for tunable acyclovir release via direct powder extrusion 3D printing10.1021/acs.molpharmaceut.5c00808 ↗
91. Applications of three-dimensional printing in ophthalmology10.1016/j.survophthal.2022.01.004 ↗
92. Development of 3D printed drug-eluting contact lenses10.1093/jpp/rgab173 ↗
93. Fabrication of 3D-printed contact lens composed of polyethylene glycol diacrylate for controlled release of Azithromycin10.1248/bpb.b23-00443 ↗
94. The challenges in the regulatory approval of additive-manufactured medical devices: a quantitative survey10.1007/s43441-025-00812-z ↗
95. 3D-printed contact lenses to release polyvinyl alcohol as a therapeutic agent for the treatment of dry eyes10.3390/pharmaceutics17020219 ↗
96. Fused deposition modeling (FDM) 3D printing of the thermo-sensitive peptidomimetic drug enalapril maleate10.3390/pharmaceutics14112411 ↗
97. Impact of disinfection and sterilization on 3D-printing resin performance for surgical guides in cardiac ablation surgery10.3390/bioengineering12090924 ↗
98. A passive MEMS drug delivery pump for treatment of ocular diseases10.1007/s10544-009-9313-9 ↗
99. Ocular drug delivery: emerging approaches and advances10.3390/pharmaceutics17050599 ↗
100. Microfluidic technologies for wearable and implantable biomedical devices10.1039/D5LC00499C ↗