Downloads Adult Squint Surgery – Information for Patients (0.15 MB) Botulinum Toxin injection for Squints (Strabismus) (0.53 MB) Information for patients wearing a Fresnel prism (0.54 MB) Long Sight (Hypermetropia) and Glasses (0.34 MB) Long Sight (Hypermetropia) and Glasses Information for Parents and Carers (0.34 MB) Short Sight (Myopia) and Glasses (0.27 MB) Short Sight (Myopia) and Glasses (0.27 MB) Tear Duct Probing Surgery (0.54 MB) What is Binocular Diplopia (Double Vision?) (0.25 MB) Last reviewed: 14 January 2026