Cost-effective and adaptable cataract surgery simulation with basic technology

Cataract Surgery Training in Germany: A Survey by the European Board of Ophthalmology

INTRODUCTION

Phacoemulsification is a fundamental surgical skill for ophthalmology residents and the most commonly performed operation in the ever-evolving field of ophthalmology. A comprehensive study conducted between 2018 and 2022 showed wide variation in the experiences of European residents. The aim of this study was to study the data from Germany in the European data context.

METHODS

This study analyses survey results from German participants in European Board of Ophthalmology (EBO) examinations (2018 - 2022) and classifies the results in overall European comparison. We also performed a regional analysis by federal state.

RESULTS

Of a total of 445 addressees, 136 (30.6%) responded to the questionnaire. Around two-thirds or 67.7% had taken the EBO exam between 2021 and 2022; most of the study participants were women (59.6%) and the average age was 34 ± 2. By far the most at 89.7% were right-handed and came from fourteen different federal states, mostly from North Rhine-Westphalia, Baden-Württemberg, Bavaria, and Berlin. Under a quarter of respondents at 22.8% stated that they had carried out at least ten training sessions on animal eyes. Very few at 5.1% reported completing training sessions on synthetic eyes compared to 16.9% stating that they had trained on a virtual reality simulator. Having taken more than ten training sessions correlated significantly with higher confidence at performing cataract surgery (p < 0.001). Eighty-three respondents (61%) had not performed any of the steps taken in cataract surgery on patients during specialty training in Germany. This was well above the European average. Women were statistically significantly overrepresented in this subgroup, accounting for 67.5% (p = 0.019) of the subgroup.

DISCUSSION

In the European context, the German national specialty training curriculum does not require cataract operations in any set numbers. This model may have contributed to the significant gender differences. Simulation-based medical training may address this problem as an additional tool for more equitable access to surgical training.

CONCLUSION

Intra-European comparison and exchange may help improve guidelines for ophthalmological specialty training. This might standardise and improve training standards in both conservative and surgical ophthalmology throughout Europe.

Development, Evaluation, and Implementation of a Cost-Effective, Novel Lateral Canthotomy Simulation Model for Training Emergency Medicine Physicians

This study proposes a new, low-cost lateral canthotomy simulation model for the purpose of improving training among emergency medicine physicians. This model is important for the rehearsal and honing of skills necessary in such a critical procedure, in cases where this procedure needs to be done in a sensitive situation where an ophthalmologist is not readily available. We surveyed 15 emergency residents before and after the training on comfort and proficiency in performing lateral canthotomy with a standardized Likert scale. Results show a significant increase in comfort and familiarity with the procedure post training, with average comfort levels increasing from 2.4 at pre-training to approximately 3.87 at post training. These findings would, therefore, indicate that the novel simulation model effectively bridges the proficiency gap and should then translate into better preparedness with the potential to improve patient outcomes in emergency settings.

Training in cataract surgery in Spain: analysis of the results of a survey of the European Board of Ophthalmology in a Spanish cohort

INTRODUCTION

A survey conducted by the European Board of Ophthalmology (EBO) revealed significant differences in the surgical training of the ophthalmology residents in Europe, including a disparity between the sexes and a variation in the experience on cataract surgery (CC) between them. This study is about the Spanish sub-cohort of the survey, and its objective is to present and analyse the peculiarities of ophthalmology training in Spain within the European context, as well as discussing ways to harmonise and improve that training throughout the EU.

METHODS

We analyse data of the Spanish participants in the EBO exams, defining subgroups by the Autonomous Communities existing in Spain.

RESULTS

93 of 135 requested participants (68.9%) responded. A 60.2% passed the EBO exam between 2021 and 2022, being mostly women (65.59%) aged 31 years old on average. The 91.4% were right-handed, coming from 13 of the 17 Spanish autonomous communities, although mostly from the Community of Valencia, Madrid and Catalonia. Respectively, 16.1%, 3.2% and 8.7% of the respondents said they have completed 10 or more training sessions on animal eyes, synthetic eyes and through the virtual reality simulator. This training was correlated with greater self-confidence in the management of a posterior capsular tear during surgery (p .025). All respondents manifested to have already performed stages of the CC. The average number of operations reported was 181.6 with regional disparities. A significant difference is observed between the sexes against women (-28.3%, p 0.03).

DISCUSSION

Ophthalmologists in Spain, much more than other European countries, have greater opportunities for surgical training, with surgical procedures during the residency, that nearly triples those made by the others. Spanish women refer, like their European colleagues, to be in disadvantage in learning opportunities about cataract surgery. The Simulation Based Medical Education (SBME) allows to respond to the training deficit and complements the training on the patient. Although we demonstrate a significant correlation between the number of procedures carried out and self-confidence to operate simple cases, the SBME would be a complementary tool in self-confidence in front of a complication like capsular rupture.

CONCLUSION

Spain massively adopts the model named by us "surgery for all", despite the underrepresentation of women in this area, emphasising a need for cultural change that the SBME could facilitate.

Surgical Aortic Valve Replacement Using a Porcine Model: A Low-Cost Simulation for Surgical Trainees

Simulation experiences are valuable to the training of future successful surgeons. These experiences introduce trainees to operational concepts through hands-on engagement within a low-stress environment to promote skill, information retention, and increased competency for future success in real-life scenarios. The study aimed to develop a low-cost, reproducible surgical simulation for teaching aortic valve replacement using porcine models. This study employed a single-center educational workshop design to provide trainees with a comprehensive wet laboratory experience in surgical aortic valve replacement using a porcine model. The simulation involved step-by-step procedures using porcine hearts in a wet lab environment, emphasizing specific surgical techniques such as suturing, knot tying, and valve replacement. Simulated valves were created using insulation foaming and aluminum wiring. The study was conducted at a southeastern medical school's wet lab. Thirty-eight preclinical medical students participated. The simulation was designed to provide a comprehensive overview of the steps involved in aortic valve replacement using porcine models. It emphasized the importance of teamwork, fundamental surgical skills, and effective communication within a surgical setting. The low-cost surgical simulation allowed trainees to learn technical skills that could be tailored to their proficiency level. Simulation for cardiothoracic procedures is limited by monetary spending and the availability of adequate materials to create a beneficial learning experience. This low-cost simulation allows resource-limited institutions to provide their students an additional opportunity to practice fundamental surgical principles such as suturing.

Democratizing Vitreoretinal Surgery Training With a Portable and Affordable Virtual Reality Simulator in the Metaverse

Purpose

The purpose of this study was to develop and validate RetinaVR, an affordable, portable, and fully immersive virtual reality (VR) simulator for vitreoretinal surgery training.

Methods

We built RetinaVR as a standalone app on the Meta Quest 2 VR headset. It simulates core vitrectomy, peripheral shaving, membrane peeling, and endolaser application. In a validation study (n = 20 novices and experts), we measured: efficiency, safety, and module-specific performance. We first explored unadjusted performance differences through an effect size analysis. Then, a linear mixed-effects model was used to isolate the impact of age, sex, expertise, and experimental run on performance.

Results

Experts were significantly safer in membrane peeling but not when controlling for other factors. Experts were significantly better in core vitrectomy, even when controlling for other factors (P = 0.014). Heatmap analysis of endolaser applications showed more consistent retinopexy among experts. Age had no impact on performance, but male subjects were faster in peripheral shaving (P = 0.036) and membrane peeling (P = 0.004). A learning curve was demonstrated with improving efficiency at each experimental run for all modules. Repetition also led to improved safety during membrane peeling (P = 0.003), and better task-specific performance during core vitrectomy (P = 0.038), peripheral shaving (P = 0.011), and endolaser application (P = 0.043). User experience was favorable to excellent in all spheres.

Conclusions

RetinaVR demonstrates potential as an affordable, portable training tool for vitreoretinal surgery. Its construct validity is established, showing varying performance in a way that correlates with experimental runs, age, sex, and level of expertise.

Translational Relevance

Fully immersive VR technology could revolutionize surgical training, making it more accessible, especially in developing nations.

Awareness of the Risk of Chronic Use of Steroid Causing Cataract in Al Ahsa City, Saudi Arabia

Introduction The lens, essential for vision, can be impaired by cataracts, leading to partial or complete reversible vision loss. Common risk factors include aging, diabetes, and steroid use, with significant financial implications. Limited awareness in Saudi Arabia necessitates further research to reduce cataract prevalence and increase knowledge about steroid-induced cataracts. Methodology This was a cross-sectional study in Al Ahsa City, Saudi Arabia that aims to assess awareness of cataracts induced by long-term steroid use. Data was collected via an online survey and analyzed using Statistical Package for Social Sciences (SPSS) version 29 (IBM Corp., Armonk, NY, USA). Results Our study results show that 69.8% (n=291) of participants were female, and 30.2% (n=126) were male, with the majority (62.6%, n=261) having a university education. Notably, 91.1% (n=380) reported no steroid use, while 8.9% (n=37) reported long-term use, and 10.1% (n=42) used steroids topically. There are moderate awareness levels regarding cataract and steroid associations, with 68.1% (n=284) recognizing topical steroids as the common culprits. Logistic regression highlighted the positive correlation between knowledge of cataract risks due to steroid use and actual steroid use, corroborated by a notable 73.0% (n=27) steroid usage among high-awareness individuals. Conclusion Our study underscores moderate awareness regarding steroid-related cataract risks in Al Ahsa City. Educational status significantly influenced understanding, highlighting the importance of targeted health education initiatives.

Evaluation of Two-Dimensional (2D) versus Three-Dimensional (3D) Video Tutorials in Cataract Surgery for New Trainees

Purpose  Microscopic ophthalmic surgery requires an understanding of three-dimensional (3D) spaces within the eye. Recently, there has been an increase in 3D video training tools in health care. Studies have evaluated the efficacy of 3D tutorials in general surgery, but little has been published within ophthalmology. We present a randomized study evaluating differences in surgically naïve trainees after watching either a 2D or 3D phacoemulsification tutorial. Design  This was a double-blind, randomized study. A group of third and fourth year medical students at our institution were randomized with stratified randomization based on prior surgical courses to control for differences in baseline surgical skill. The two study arms were watching 2D or 3D instructional videos on phacoemulsification (Richard Mackool). Methods  Participants received a preliminary survey and participated in an hour-long microscopic surgery session. During the session, participants performed tasks evaluating baseline microscopic spatial awareness and surgical skill. The students were then instructed to watch either a 2D or 3D video on phacoemulsification based on their randomized study arm. During the postintervention session, participants performed the biplanar incision and capsulorhexis steps of cataract surgery discussed in the video on model eyes. Students were evaluated on speed and overall capsulorhexis quality. Results  Thirty-one students qualified for the study and completed the microscopic surgery session. Students in both groups had similar baseline speed and quality of preintervention microscopic tasks ( p  > 0.05 for all tasks). Postintervention, students randomized to the 3D video performed significantly faster than the 2D group for biplanar incision (11.1 ± 5.5 s vs. 20.7 ± 10.5 s, p  = 0.001). There were no statistically significant differences found between the groups in capsulorhexis timing ( p  = 0.12) or quality score ( p  = 0.60). Conclusions  3D video surgical training tutorials may improve speed of certain steps of cataract surgery for surgically naïve ophthalmology trainees. Given the limited sample size of this study, further investigation of their effectiveness is warranted.

Assessment of a high-fidelity, virtual reality-based, manual small-incision cataract surgery simulator: A face and content validity study

Purpose

To establish the face and content validity of the HelpMeSee Eye Surgery Simulator - a virtual reality-based cataract surgery simulator for manual small-incision cataract surgery (MSICS).

Methods

The face and content validity were assessed on the sclero-corneal tunnel construction course. A questionnaire with 11 questions focused on the visual realism, with resemblance to real life surgery, and the training value of the simulator was developed. Thirty-five experienced MSICS surgeons participated in the study. Responses were recorded using a seven-point scoring system.

Results

Overall, 74.3% (26/35) of the respondents agreed that the overall visual representation of the eye and the instruments in the simulator were realistic. The task of injecting a visco-elastic through the paracentesis was reported to be the most visually realistic task with a mean score of 5.78 (SD: 1.09; range: 2-7). With regard to content validity, 77.1% (27/35) of the subjects felt agreed that the errors and complications represented throughout the entire tunnel construction module were similar to those encountered in real life; the task of entering the anterior chamber with the keratome had a mean score of 5.54 (SD: 0.98; range 1-7), being rated the highest in that aspect. Overall, 94.3% (33/35) of the subjects agreed that the simulator would be useful in developing hand-eye co-ordination. A similar number of 94.3% (33/35) agreed that based on their experience, they would recommend cataract surgical training on this simulator.

Conclusion

The results suggest that the HelpMeSee Eye Surgery Simulator appears to have sufficient face and content validity for cataract surgical training.

Low-tech intraocular ophthalmic microsurgery simulation: A low-cost model for home use

In order to maintain manual dexterity and surgical skills, trainees are encouraged to partake in regular simulation. Current options for intraocular surgical simulation require specialist microscopic equipment which is expensive and requires access to simulation facilities. A set of core simulation exercises and basic surgical skills of performing the corneal incisions, capsulorhexis, improving the manual dexterity, and suturing were identified, discussed, and agreed among authors before designing this simulation exercise. In this paper, we propose a smartphone-based, low-cost, low-tech model with corresponding exercises for intraocular simulation that can be used at home for the above-mentioned surgical skill set. This model provides an easy, portable, and reproducible method of simulation and can serve as an adjunct to patient-facing surgical training, especially in the current pandemic, where the excess to the simulation facilities or setup of these facilities may be difficult.