Dear, are you an ophthalmologist and interested in pediatric ophthalmology? You must be thinking to start benefiting your squint patients with inwards and outwards eye deviations with squint surgery. Here are the guidelines to kick start your strabismus surgery. Don’t worry if you still are fixed with your calculations. How much medial rectus recession or lateral rectus resection you have to do. Stay here. Here is Velorum strabismus surgical dose calculator. Easy to use. Most popularly used squint surgery guideline tool. All measurements are in prism diopters.