Retinal vascular diseases (RVDs) are often treated with intravitreally (IVT) injected drugs, with relatively low patient compliance and potential risks. Ongoing research explores alternative RVD treatments, including eye drops and oral tablets. This study surveyed RVD patients treated with IVT injections to establish factors influencing low compliance rates while gauging treatment delivery method preferences. Demographics, perspectives, and treatment preferences were collected via IRB-approved, self-administered survey sent to Glick Eye Institute patients treated via IVT injections. Demographics, diagnoses, and treatments were ascertained from respondents' medical records. Gender, age, and number of IVT injections received were used as stratifications. Five-level Likert-style scales and t-tests evaluated responses and stratification comparisons. The most common diagnoses in the respondent population (n = 54; response rate = 5%) were age-related macular degeneration, macular edema, and diabetic retinopathy. Respondents had varying levels of education, income, and age. Most (83%) admitted feeling anxious prior to their first IVT injection, but 80% reported willingness to receive IVT injections indefinitely, with a preference for ophthalmologist visits every 1-3 months. Eye drops would be preferred over IVT injections by 76% of respondents, while 65% preferred oral tablets, due to several perceived negative factors of IVT injections and positive factors for eye drops. Stratified groups did not differ in responses to survey questions. RVD patients will accept IVT injections for vision preservation, but alternative delivery methods like eye drops or oral tablets would be preferred. Thus, development of eye drop and oral therapeutics for RVD treatment is further emphasized by these findings.
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http://dx.doi.org/10.1038/s41598-021-98568-7 | DOI Listing |
Pharmacol Res Perspect
February 2025
Hamamatsu Pharma Research, Inc., Hamamatsu, Shizuoka, Japan.
The lack of effective treatments for dry age-related macular degeneration (AMD) is in part due to a lack of a preclinical animal model that recapitulates features of the clinical state including macular retinal pigment epithelium (RPE) degeneration, also known as geographic atrophy (GA). A nonhuman primate model of GA was developed and its responsiveness to an approved treatment, avacincaptad pegol (ACP), a complement C5 inhibitor, was evaluated. Intravitreal (ivt) administration of sodium iodate (SI) into one eye of male Macaca fascicularis leads to retinal areas (mm) of hyper- or hypo-autofluorescence.
View Article and Find Full Text PDFEye (Lond)
December 2024
Department of Ophthalmology, Sunderland Eye Infirmary, South Tyneside & Sunderland NHS Foundation Trust, Sunderland, UK.
Objectives: The 36-month XTEND (NCT03939767) multicentre, observational, prospective study examined the effectiveness of proactive treatment regimens of intravitreal aflibercept (IVT-AFL) 2 mg in treatment-naïve patients with neovascular age-related macular degeneration (nAMD) in routine clinical practice. The 12- and 24-month outcomes from the XTEND UK cohort are reported.
Methods: Patients aged ≥50 years with nAMD planned to receive IVT-AFL 2 mg were eligible.
Mol Ther Methods Clin Dev
December 2024
Clinical Sciences, North Carolina State University, Raleigh, NC 27607, USA.
Non-infectious uveitis (NIU) is a painful recurrent disease affecting 2%-5% of horses. Current treatments require frequent administration with associated adverse events. In a previous study, intravitreal (IVT) adeno-associated virus (AAV) harboring equine interleukin-10 (eqIL-10) cDNA inhibited experimental uveitis in rats.
View Article and Find Full Text PDFJ Vitreoretin Dis
November 2024
Miami Ocular Oncology & Retina (MOOR), Miami, FL, USA.
To examine the trends and outcomes in the management of Coats disease and evaluate the effects of a staged therapeutic approach using transpupillary laser vascular ablation, intravitreal (IVT) bevacizumab, and adjunct as-needed posterior sub-Tenon triamcinolone acetonide (used only in cases with a persistent active exudation) on globe retention, anatomic status, and visual acuity (VA). An evaluation was performed from 2005 to 2023. Previous case series published in the literature were reviewed.
View Article and Find Full Text PDFRegul Toxicol Pharmacol
January 2025
Exponent, Inc., Bellevue, WA, 98007, USA.
Intravitreal (IVT) injection is an uncommon route of parenteral administration for therapeutic medications, but one of the most important for the treatment of ocular diseases, especially those related to macular degeneration. Nonetheless, there are currently no regulatory guidelines that specifically address how to establish a permitted daily exposure (PDE) for impurities and residual process reagents in IVT pharmaceutical drug products given the unique vulnerability of ocular tissues. The establishment of PDEs for IVT administration is complicated by the limited understanding of metabolism and clearance of small molecular weight chemicals from the human vitreous humor (VH), a problem compounded by the limited IVT-specific toxicological data.
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