Refraction and vision

Dioptres and spectacle prescriptions, cycloplegic refraction, contact lenses, refractive surgery, childhood myopia and low vision.

6 pages

Topic

• Contact lenses: types and complicationsContact lenses correct vision well but carry a small risk of serious corneal infection
• Low vision and visual rehabilitationWhen vision cannot be restored, rehabilitation helps people read, move and work with the vision…
• Myopia in children: progression and controlMyopia is rising worldwide
• Refraction: dioptres and reading a prescriptionA spectacle prescription gives the lens power (sphere), the astigmatism correction (cylinder)…
• Refractive surgery: what the general doctor should knowLaser surgery reshapes the cornea so glasses are not needed

Examination

• Cycloplegic refraction and retinoscopyDrops that relax focusing reveal a child's true refraction

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← Ophthalmology for the general doctor

Educational content; not a clinical guideline and no substitute for assessment by a health professional. For sudden visual loss, severe eye pain, a chemical burn or an eye injury, go to an emergency department at once.

Representative model, for educational purposes only.