Axial length growth difference between eyes after monocular laser refractive surgery: eight patients who underwent myopic laser ablation for both eyes at intervals of several years

Background Myopia is a global public health issue. Controlling myopia progression is a primary focus of myopia studies today. Peripheral retinal myopic defocus is considered the mechanism for reduced myopia progression in orthokeratology studies. The topographic change in the front corneal surface after laser refractive surgery and orthokeratology procedures may appear similar. The purpose of this study was to explore the role of myopic laser ablation on axial length (AL) growth. Methods Myopic patients who underwent monocular excimer laser refractive surgery first in one eye and then in another eye several years later because of myopia occurrence or myopia progression were recruited. The axial length elongation and refraction (spherical equivalent) between the two eyes were observed and compared. Results A total of 8 myopic patients were enrolled in the study. The AL increased from 24.52 ± 0.96 mm to 24.68 ± 1.03 mm but without significance (T = 1.49, P > 0.05) in the ablated eyes. The AL increased significantly from 23.73 ± 0.91 mm to 24.26 ± 0.95 mm in the nonablated eyes (T = 6.76, P < 0.001). The AL elongation of the ablated eyes with 0.16 ± 0.30 mm growth was significantly lower than that of the nonablated eyes with 0.53 ± 0.32 mm growth (T = 8.98, P < 0.001). The spherical equivalent (SE) increased significantly in the ablated eyes (− 0.59 ± 0.21 (D), T = 6.36, P < 0.001) and in the nonablated eyes (− 0.97 ± 0.55 (D), T = 4.91, P < 0.01), and the difference between the two eyes was significant (T = 3.05, P < 0.05). Conclusions The inhibitory effect of myopic laser ablation on AL elongation reported in the limited case studies argues for animal research on its efficacy as a new intervention for myopia progression.

Corneal Laser Refractive Surgery Curriculum Development in the Military: Using the Nominal Group Technique

ABSTRACT Introduction Corneal laser refractive surgery (CRS) has emerged over the past three decades as a surgical method for correcting or improving vision. In the military, CRS helps warfighters achieve weapon grade vision, which offers a tactical advantage in the deployed environment. As refractive surgery has become more prevalent in both the military and civilian sector, more ophthalmologists need to learn about treatment options as well as management of complications in order to meet increasing patient demand. Currently, little is known about the most effective curriculum for teaching refractive surgery in training programs, and a standardized curriculum does not exist. Since unification of training programs is a Defense Health Agency priority, this study aimed to collect expert consensus on a standardized curriculum for CRS training in the military. Materials and Methods To achieve this goal, the Nominal Group Technique (NGT) was used wherein a panel of experts, currently practicing refractive surgeons involved in military refractive surgery training programs, arrived at consensus on a standardized CRS curriculum. The framework for developing this curriculum is based on Kern’s Six-Step Approach to Curriculum Development. The International Council of Ophthalmology refractive surgery curriculum, National Curriculum for Ophthalmology Residency Training, Accreditation Council for Graduate Medical Education competencies and surgical minimums, and American Academy of Ophthalmology Refractive Surgery Preferred Practice Guidelines were used as the starting materials from which panelists’ consensus was drawn. This consensus-building method allowed for equal representation of experts’ ideas and fostered collaboration to aid in the creation of a robust and standardized curriculum for refractive surgery training programs in the military. Results The panelist experts from this NGT were able to reach consensus on the components of a standardized military refractive surgery curriculum to include generalized and targeted needs assessment, goals and objectives, educational strategies, and curriculum implementation. Conclusion A standardized CRS curriculum is warranted in military training programs. This NGT achieved expert consensus on the goals, objectives, educational methods, and implementation strategies for a standardized CRS curriculum in military ophthalmology residency.