When Is the Optimum Radiological Response to Proton Beam Therapy in Uveal Melanoma?

Introduction: Proton beam therapy (PBT) is an effective treatment option for uveal melanomas. Following treatment, it may take many months for the tumour to respond and it may initially enlarge. We reviewed our PBT patients to determine when they showed a radiological response to treatment. Methods: Patients undergoing PBT for ciliary body or choroidal melanomas between 2008 and 2018 were included. Data were collected on patient demographics, treatments before and after PBT and survival. All ultrasound investigations prior and since PBT were reviewed and tumour volume calculated using a validated formula for a half-ellipsoid shape. Results: 193 patients were analysed, 169 with choroidal and 24 with ciliary body melanomas. 31.6% patients had other treatment prior to PBT. At a mean of 8 months post-PBT, 64.7% of patients had a reduced tumour volume with 20.2% having larger tumours. At a mean of 15 months post-treatment, these figures were 67.8% and 10.3%. 18.1% of patients had an enucleation during the study period. The earliest responses were seen at 2 months, the latest at 32 months post-treatment. 5-year melanoma-specific survival was 82.3%. Conclusions: In our study, by 6 months post-PBT, a majority of patients show a reduction in tumour volume. Of those that do not, many respond in the next 6 months and a response may be seen up to 32 months after treatment. Patients may need to be monitored for up to 32 months to see a final response to PBT treatment.

Is an image-based eyelid management service safe and effective?

INTRODUCTION: The COVID-19 pandemic created a requirement for reduced patient contact and reduced capacity in clinics. We previously published results of an Image-Based Eyelid Lesion Management Service (IBELMS) which was found non-inferior to traditional face-to-face clinic at diagnosing lesions and identifying eyelid malignancies. We now present first-year safety and efficacy data from this service. METHODS: Data were collected retrospectively on all patients seen in NHS Greater Glasgow and Clyde eyelid photography clinics from 30th September 2020 to 29th September 2021, including referral source and diagnosis, time to clinic review, treatment and patient outcomes. RESULTS: 808 patients were included in the study. Chalazion was the most common diagnoses recorded (38.4%). There was a statistically significant decrease in mean time from referral to appointment time between the first 4 months and last 4 months of the service (93 days to 22 days, p ≤ 0.0001). 266 (33%) of patients were discharged following photographs, 45 (6%) were discharged for non-attendance and 371 (46%) were booked for a minor procedure. 13 biopsy-confirmed malignant lesions were identified; only 3 had been referred as suspected malignancy. 23 patients out of 330 with at least 6 months follow up (7%) were re-referred within 6 months of treatment or discharge; however, none of them with a missed periocular malignancy. DISCUSSION: Eyelid photography clinics effectively reduce patient waiting times and maximise clinic capacity. They accurately identify eyelid lesions including malignancies with a low re-referral rate. We propose that an image-based service for eyelid lesions is a safe and effective way of managing such patients.

Bilateral fingolimod-associated macular oedema development after cataract surgery.

Postoperative cystoid macular oedema (CMO) is a recognised complication of cataract surgery, occurring in around 1.5% of cases. It is generally managed with topical steroids or non-steroidal anti-inflammatory medications. We present a case of a patient who developed bilateral sequential CMO following bilateral sequential cataract surgery which was non-responsive to topical therapy and worsened following sub-Tenons administration of steroid. The patient took fingolimod for multiple sclerosis both prior to and during the period of cataract surgery which is known to result in the development of macular oedema in some patients. On fingolimod cessation, the oedema resolved over a period of 5 months with good visual recovery. We present this case to inform cataract surgeons of the risk of fingolimod-associated macular oedema in patients undergoing cataract surgery and to inform neurologists of the potential need to adjust treatment for patients undergoing cataract surgery.

Acute Angle Closure in Knobloch Syndrome.

We report cases of acute angle closure in 2 young highly myopic siblings with Knobloch syndrome. To our knowledge, this is the first report of acute angle closure in Knobloch syndrome. Both patients were homozygous for a likely pathogenic variant in COL18A1. Both responded to treatment with cyclophotocoagulation and remained stable despite declining or being medically unfit for clear lens extraction. We argue that the recent implication of heterozygous mutations in COL18A1 in familial angle closure supports the argument that acute angle closure in these 2 patients was likely to be a thus far unreported feature of Knobloch syndrome. In addition, these cases also support the hypothesis that pathogenic variants in COL18A1 may be a risk factor for acute angle closure.