Real-world artificial intelligence-based interpretation of fundus imaging as part of an eyewear prescription renewal protocol.

OBJECTIVE: A real-world evaluation of the diagnostic accuracy of the Opthai® software for artificial intelligence-based detection of fundus image abnormalities in the context of the French eyewear prescription renewal protocol (RNO). METHODS: A single-center, retrospective review of the sensitivity and specificity of the software in detecting fundus abnormalities among consecutive patients seen in our ophthalmology center in the context of the RNO protocol from July 28 through October 22, 2021. We compared abnormalities detected by the software operated by ophthalmic technicians (index test) to diagnoses confirmed by the ophthalmologist following additional examinations and/or consultation (reference test). RESULTS: The study included 2056 eyes/fundus images of 1028 patients aged 6-50years. The software detected fundus abnormalities in 149 (7.2%) eyes or 107 (10.4%) patients. After examining the same fundus images, the ophthalmologist detected abnormalities in 35 (1.7%) eyes or 20 (1.9%) patients. The ophthalmologist did not detect abnormalities in fundus images deemed normal by the software. The most frequent diagnoses made by the ophthalmologist were glaucoma suspect (0.5% of eyes), peripapillary atrophy (0.44% of eyes), and drusen (0.39% of eyes). The software showed an overall sensitivity of 100% (95% CI 0.879-1.00) and an overall specificity of 94.4% (95% CI 0.933-0.953). The majority of false-positive software detections (5.6%) were glaucoma suspect, with the differential diagnosis of large physiological optic cups. Immediate OCT imaging by the technician allowed diagnosis by the ophthalmologist without separate consultation for 43/53 (81%) patients. CONCLUSION: Ophthalmic technicians can use this software for highly-sensitive screening for fundus abnormalities that require evaluation by an ophthalmologist.

[Limitations of outpatient vitreoretinal surgery at the Toulouse University hospital between 2016 and 2020: Causes for traditional hospitalization]. / Les limites de l'ambulatoire en chirurgie vitréo-rétinienne au CHU de Toulouse entre 2016 et 2020 : identification des causes d'hospitalisation traditionnelle.

INTRODUCTION: Currently, the majority of patients undergoing vitreoretinal surgery (VRS) are managed on an outpatient basis; this has been made possible by major surgical and anesthetic advances over the past decades. Nevertheless, the conversion to "all outpatient" surgery still poses some problems that are interesting to identify, and traditional hospitalization remains the solution in many situations. METHODS: All patients undergoing VRS at the Toulouse University Hospital between 2016 and 2020 were included retrospectively. For each patient, we analyzed the entire medical, anesthesia and demographic records. We performed a simple descriptive analysis of all parameters studied, followed by a bi-variate analysis between the "Outpatient/Hospitalization" parameter and all other parameters. RESULTS: Three thousand patients were included over the study period; 79.4% of patients were managed on an outpatient basis compared to 20.6% by traditional hospitalization. Failure of ambulatory care was the cause of 41.9% of the traditional hospitalizations, with the absence of an accompanying person on the evening of the surgery being the main reason (47.8%). DISCUSSION: Social isolation is found to be one of the main causes of failure of ambulatory care; improvements might be made at this level, in order to reduce the burden on the inpatient hospital system.

[Validation of identification criteria for patients having surgery for rhegmatogenous retinal detachment at Toulouse University Hospital]. / Validation des critères d'identification des patients opérés d'un décollement de rétine rhegmatogène au CHU de Toulouse.

INTRODUCTION: Seasonal variations seem to modify the incidence of rhegmatogenous retinal detachment (RRD), with a summer peak, although the meteorological parameters involved have not been studied in France. In order to conduct a national study evaluating the association between the occurrence of RRD and various climatological variables (METEO-POC study), we need to establish a national cohort of patients having undergone surgery for RRD. The data of the National Health Data System (SNDS) allow the realization of epidemiological studies concerning various pathologies. However, as these databases were initially intended for medical administrative use, the identification of the pathologies coded in these databases must be validated before any use for research purposes. In order to carry out a cohort study using SNDS data, the objective of this study is to validate the identification criteria for patients having undergone RRD surgery at Toulouse University Hospital. METHODS: We compared the cohort of RRD surgery patients at Toulouse University Hospital from January to December 2017 assembled from SNDS data with the cohort of patients meeting the same selection criteria assembled from Softalmo software data. RESULTS: With a positive predictive value of 82.0%, a sensitivity of 83.8%, a specificity of 69.9%, and a negative predictive value of 72.5%, we can consider that our eligibility criteria are performing well. CONCLUSION: Since the selection of patients via SNDS data is reliable at Toulouse University Hospital, we can use it at the national level for the METEO-POC study.

[Influence of the COVID-19 pandemia on the ophthalmologic emergency department in the Toulouse University Hospital during the first lockdown from March the 17th to May the 10th of 2020]. / Impact de la pandémie de COVID-19 sur les urgences ophtalmologiques du CHU de Toulouse lors du premier confinement du 17 mars au 10 mai 2020.

INTRODUCTION: We conducted this study to assess the impact of the COVID-19 pandemic and the lockdown in France from March 17, 2020 to May 10, 2020, on the ophthalmic emergency department at Toulouse University Hospital, compared to the period from March 2 to March 16, 2020. MATERIALS AND METHODS: This was a retrospective observational study, conducted in the ophthalmic emergency department of Toulouse University Hospital. We included the patients presenting to the emergency department from March 2 to May 10, 2020. We recorded age, sex, day of visit, time until care was received, past ocular history, outpatient or inpatient status, final diagnosis and its severity, outpatient or inpatient disposition, and medical or surgical treatment after the emergency department visit. RESULTS: We found a substantial decrease in the number of patients per day, mostly during the first month of the lockdown: 44 patients per day before the lockdown compared to 23 patients per day during the first month, followed by 38 patients per day for the second month of lockdown; more patients visiting promptly; and elderly patients represented a higher proportion of patients. CONCLUSION: The first lockdown in France due to the COVID-19 pandemic had an impact on the Toulouse ophthalmic emergency department, especially concerning the number of patients per day; this study helps to assess individual behavior in this context of a public health crisis.

Cetylpyridinium Chloride Mouthwash to Reduce Shedding of Infectious SARS-CoV-2: A Double-Blind Randomized Clinical Trial.

The airborne transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) via respiratory fluids and droplets suggests that mouthwashes containing substances with virucidal activity can help reduce viral spread. We conducted a multicenter, double-blind, placebo-controlled, randomized trial to assess the virucidal activity of cetylpyridinium chloride (CPC) mouthwashes. Outpatients who tested positive for SARS-CoV-2 infection with or without symptoms were randomized to perform washes and gargles for 1 min with 15 mL of either colored distilled water or 0.07% CPC (Vitis CPC Protect) mouthwash. The study outcomes were the SARS-CoV-2 log10 viral RNA load and the nucleocapsid protein levels, both in saliva at 1 and 3 h after the intervention. In total, 118 patients were enrolled and randomized (mean [SD], age 46 [14] y). Thirteen of 118 participants (11%) did not complete follow-up or had insufficient sample volume for testing and were excluded from the analysis. The assessment of the viral load showed no significant differences between groups at any of the investigated points. However, the levels of SARS-CoV-2 nucleocapsid protein of lysed viruses were significantly higher in the CPC group compared with the control group at 1 h (adjusted difference 269.3 pg/mL; 95% confidence interval [CI], 97.1-441.5) and at 3 h postintervention (561.1 pg/mL; 95% CI, 380.0-742.2). In nonhospitalized patients with asymptomatic or mild symptomatic SARS-CoV-2 infection, a 0.07% CPC mouthwash, compared to placebo, was associated with a significant increase of nucleocapsid protein levels in saliva, indicating enhanced disruption of viral particles.

[Management of ocular toxoplasmosis in France: Results of a modified Delphi study]. / Prise en charge de la toxoplasmose oculaire en France : résultats d'une étude Delphi modifiée.

OBJECTIVE: To evaluate diagnostic and therapeutic practices and then establish a consensus on the management of ocular toxoplasmosis in France through a Delphi study. MATERIALS AND METHODS: Twenty-three French experts in ocular toxoplasmosis were invited to respond to a modified Delphi study conducted online, in the form of two questionnaires, in an attempt to establish a consensus on the diagnosis and management of this pathology. The threshold for identical responses to reach consensus was set at 70 %. RESULTS: The responses of 19 experts out of the 23 selected were obtained on the first questionnaire and 16 experts on the second. The main elements agreed upon by the experts were to treat patients with a decrease in visual acuity or an infectious focus within the posterior pole, to treat peripheral lesions only in the presence of significant inflammation, the prescription of first-line treatment with pyrimethamine-azithromycin, the use of corticosteroid therapy after a period of 24 to 48hours, the prophylaxis of frequent recurrences (more than 2 episodes per year) with trimethoprim-sulfamethoxazole as well as the implementation of prophylactic treatment of recurrences in immunocompromised patients. On the other hand, no consensus emerged with regard to the examinations to be carried out for the etiological diagnosis (anterior chamber paracentesis, fluorescein angiography, serology, etc.), second-line treatment (in the case of failure of first-line treatment), or treatment of peripheral foci. CONCLUSION: This study lays the foundations for possible randomized scientific studies to be conducted to clarify the management of ocular toxoplasmosis, on the one hand to confirm consensual clinical practices and on the other hand to guide practices for which no formal consensus has been demonstrated.

Pediatric ocular trauma: Characteristics and outcomes among a French cohort (2007-2016).

Pediatric ocular trauma is a major cause of acquired monocular blindness. Post-traumatic visual impairment can lead to significant handicap. In France, recent data on the epidemiology of pediatric ocular trauma are lacking. AIM: To describe the characteristics of a pediatric cohort with ocular trauma and to analyse patient outcomes. MATERIAL AND METHODS: This was a retrospective observational study of pediatric ocular trauma (age<15 years) presenting to pediatric and ophthalmology emergency units of our tertiary university hospital between January 1, 2007 and December 31, 2016. Data were collected on: age, sex, time and circumstances of trauma, injury type and location, trauma mechanism, other associated injuries, hospitalisation rate and length of stay, treatment, and sequelae (visual impairment). Ocular traumas were classified according to the Birmingham Eye Trauma Terminology (BETT) system and the Ocular Trauma Score (OTS). RESULTS: A total of 337 children were included (247 males). The global mean age was 8.4±4.1 years (range 6 months to 14.9 years). The trauma occurred at home (51%) or in a public area (21%). Blunt objects (22%) and direct trauma (17%) were the main mechanisms. According to the BETT, 23% of ocular traumas were open-globe traumas (OGT): penetrating (n=39), perforating (n=12), with intraocular foreign body (n=24). Among closed-globe injuries (CGT), hyphema was the most frequent lesion (22%). Associated injuries were recorded in 32 patients. In all, 63% of patients had an OTS of 5 (good visual prognosis) while 39 children (12%) had an OTS of ≤3. In 47 patients, there was an initial surgery; 62% of children were hospitalised. By the end of the ophthalmic follow-up, 32 patients (9.5%) had sequelae. Children aged between 2 and 5 years had the greatest proportion of sequelae (15%). Compared with female patients, male patients were older (P=0.0007) and were more frequently injured by projectiles (P=0.036). Compared with CGT, OGT were more frequent among younger children (P=0.0015). Ocular injuries secondary to a projectile and spring-summer accidents were associated more frequently with a poor visual prognosis (OTS ≤3; P=0.036, OR=2.5 [1.1-5.8] and P<0.0001, OR=5.8 [3.2-10.7] respectively). COMMENTS: The annual admission for pediatric ocular trauma was stable during the study period (200 cases per 100,000 annual trauma admissions in the first period [2007-2011] and 195 cases per 100,000 during the most recent period [2012-2016]). Projectiles such as Airsoft gun bullets and paintball are still the cause of severe injuries while reports on ocular injuries secondary to blaster or Nerf guns use are starting to be published. CONCLUSION: The great majority of ocular traumas could be prevented, especially by wearing protective goggles during at-risk activities. French legislation should be stricter about the sale of any Airsoft gun to children under 18 years old. Parents must repeat educational warnings to their children handling sharp objects. The social and psychological burden of relative visual impairment is of importance: One in ten children will have a permanent visual defect.

[Assessment of astigmatism associated with the iris-fixated ARTISAN aphakia implant: Anterior fixation versus posterior fixation, study of postoperative follow-up at one year]. / Évaluation de l'astigmatisme associé à l'implant ARTISAN Aphakia fixé à l'iris en face antérieure versus face postérieure : étude du suivi postopératoire sur un an.

PURPOSE: The goal of our retrospective, single-center study of a case series was to compare the total, corneal, and internal astigmatism, and the visual acuity at one year after combined or stand-alone surgery consisting of iris fixation of an iris-claw intraocular lens (ARTISAN aphakia) in aphakic patients, according to whether the lens was fixated to the anterior (n=21) or posterior (n=51) surface of the iris. RESULTS: We did not find a significant difference between these two types of fixation for any of the studied variables. The surgically induced astigmatism was 1.67 D at 176° in group A versus 1.19 D at 11° in group P. CONCLUSION: Although this surgery creates additional corneal astigmatism, it has not been proven that it differs depending on the type of fixation of the iris-claw. If we adhere to the notion that the posterior fixated iris-claw decreases the risk of endothelial decompensation in case the implant becomes disenclavated, then reverse iris fixation of the iris-claw makes sense.

[Evaluation of the nurse triage at the ophtalmology emergency department of Pierre-Paul-Riquet Hospital]. / Évaluation du questionnaire de tri infirmier aux urgences ophtalmologiques de l'hôpital Pierre-Paul-Riquet au CHU de Toulouse.

INTRODUCTION: The steady increase in the number of visits to the various emergency services combined with the decrease in medical demographics, make it necessary to optimize triage of patients to improve their care. The purpose of this study was to evaluate the pertinence of our triage questionnaire in the classification of ophthalmologic emergencies by severity. METHODS: We used a monocentric cross-sectional study. From September 5 through September 25 2017, 858 patients who had all been seen in the ophthalmology emergency department of Pierre Paul Riquet Hospital of Toulouse university medical center and had responded to the triage nurse questionnaire were included. According to the symptoms presented or not by the patient, a color code was attributed (GREEN, ORANGE or RED) in order of increasing level of emergency. For each patient, we compared the severity of the final diagnosis by Base Score with the level of emergency established by our questionnaire. RESULTS: There were 118 "GREEN" patients, 606 "ORANGE" patients and 134 "RED." We were able to analyze 822 patients. 21.65% of patients were correctly classified, 73.36% were overestimated (of which 87.06% by one level and 12.94% by two levels of severity), and 4.99% were underestimated (of which 90.24% by one level and 9.76% by two levels). CONCLUSION: Our current triage questionnaire is not sufficiently discriminating for effective triage of ophthalmologic emergencies. It often overestimates minor emergencies, causing a delay in treating other emergencies. We propose a new questionnaire modified according to the results obtained during our study.

[A series of 20 cases of endogenous endophthalmitis]. / Description et devenir d'une série de 20 endophtalmies endogènes.

BACKGROUND: The purpose of this case series was to evaluate both the visual and systemic prognosis of patients with endogenous endophthalmitis. MATERIAL AND METHODS: We reported a series of 20 cases of endogenous endophthalmitis occurring between 2012 and 2015 at the university medical center in Toulouse. RESULTS: The mean age was 67 (±43.3) years with a male predominance (n=11). The site of entry was found in 14 cases (87.5%). In 11 cases (69%), the causative agent was a bacterium; a fungal infection was found in five cases. Visual acuity after maximal medical and surgical treatment was limited to "no light perception" in 7 cases (35%), "hand motion" in 2 cases (10%), "finger counting" in 3 cases (15%) and 10/10 in 2 cases (10%). One case had no final data. The main site of entry was found to be associated endocarditis (n=7), central venous line or venipuncture (n=6). The main local complications were retinal detachment (n=6), cataract (n=5) and choroidal neovascularization secondary to scarring (n=2). CONCLUSIONS: Endogenous endophthalmitis is associated with poor visual prognosis. It is also often associated with systemic complications that may be life-threatening.

[Inefficacy of aflibercept in the treatment of idiopathic macular telangiectasia type 2 without neovascularization]. / Inefficacité de l'aflibercept dans le traitement des télangiectasies maculaires idiopathiques de type 2 sans néovascularisation.

Idiopathic macular telangectasia type 2 is a rare disease consisting primarily of bilateral macular capillary telangiectasia, alterations of the ellipsoid zone and intraretinal cysts that may appear as cystoid macular edema in the absence of neovascularization. Our goal was to study the efficacy of aflibercept in the treatment of these cysts. Thus, we performed a series of three intravitreal injections of aflibercept in the right eye of a woman with a typical presentation of macular telangectasia type 2 complicated by cystoid macular edema without neovascularization. These injections did not significantly improve the anatomical or functional results. Other studies investigating the efficacy of other anti-VEGF in this disease led mainly to a decrease in macular thickness on OCT after injection, without any functional improvement. The anti-VEGFs therefore appear to be of little value in treating MacTel 2 intraretinal cysts without neovascularization.