Introduction: Since July 2021, a worldwide shortage of verteporfin (Visudyne (R)) occurred: an essential medicine required for photodynamic therapy (PDT). PDT with verteporfin has a broad range of... Show moreIntroduction: Since July 2021, a worldwide shortage of verteporfin (Visudyne (R)) occurred: an essential medicine required for photodynamic therapy (PDT). PDT with verteporfin has a broad range of indications in ophthalmology, including chronic central serous chorioretinopathy, polypoidal choroidal vasculopathy and choroidal haemangioma. For these disorders, PDT is either the first-choice treatment or regarded as a major treatment option. Materials and methods: A questionnaire was sent to key opinion leaders in the field of medical retina throughout the world, to assess the role of PDT in their country and the effects of the shortage of verteporfin. In addition, information on the application of alternative treatments during shortage of verteporfin was obtained, to further assess the impact of the shortage. Results: Our questionnaire indicated that the shortage of verteporfin had a major impact on ophthalmic care worldwide and was regarded to be a serious problem by most of our respondents. However, even though there is ample evidence to support the use of PDT in several chorioretinal diseases, we found notable differences in its use in normal patient care throughout the world. Various alternative management strategies were noted during the verteporfin shortage, including lowering the dose of verteporfin per patient, the use of alternative treatment strategies and the use of a centralized system for allocating the remaining ampoules of verteporfin in some countries. Conclusion: The shortage of verteporfin has had a large effect on the care of ophthalmic patients across the world and may have resulted in significant and irreversible vision loss. Mitigation strategies should be developed in consultation with all stakeholders to avoid future medication shortages of verteporfin and other unique ophthalmic medications. These strategies may include mandatory stock keeping, compulsory licensing to an alternative manufacturer or incentivizing the development of competition, for example through novel public-private partnerships. Show less
Iovino, C.; Peiretti, E.; Tatti, F.; Querques, G.; Borrelli, E.; Sacconi, R.; ... ; D. zur 2021
Background To investigate the anatomical and functional results in eyes with peripapillary pachychoroid syndrome (PPS) undergoing photodynamic therapy (PDT). Methods A total of 25 eyes from 23... Show moreBackground To investigate the anatomical and functional results in eyes with peripapillary pachychoroid syndrome (PPS) undergoing photodynamic therapy (PDT). Methods A total of 25 eyes from 23 patients with PPS treated with PDT were retrospectively evaluated in this multicentric study. Main outcome measure was the proportion of eyes that achieved treatment success, defined as a decrease in both subretinal fluid (SRF) height and central subfield thickness (CST), at 3 months after PDT compared to baseline. Secondary outcomes were the change in CST, SRF, and best-corrected visual acuity (BCVA) 3 months after treatment and predictive factors for treatment success. When available, data between 3 and 12 months were also reviewed. Results Treatment success was achieved in 16 eyes (64%). In the total cohort, CST decreased significantly from 356 +/- 118 mu m at baseline to 282 +/- 90 mu m and 270 +/- 91 mu m at 1 and 3 months, respectively (p < 0.001). Maximal SRF height decreased significantly from 102 +/- 83 mu m at baseline to 38 +/- 46 mu m and 32 +/- 42 mu m at 1 and 3 months, respectively (p < 0.001), and remained stable at month 6 (29 +/- 44 mu m) and month 12 (23 +/- 35 mu m). BCVA improved significantly from baseline to month 3 (p = 0.021). Conclusions PDT can be considered an efficacious treatment option in patients with PPS. Prospective data with longer follow-up in a bigger cohort are needed in order to determine the optimal treatment algorithm in this relatively novel disease. Show less
