Thorington, James

1858 – 1944

• Prisms
• Refraction and how to refract
• Refraction and how to refract
• Refraction of the human eye and methods of estimating the refraction
• Retinoscopy
• Retinoscopy (or shadow test) in the determination of refraction at one meter of distance, with the plane mirror
• Retinoscopy (or shadow test) in the determination of refractions at one meter distance, with the plane mirror
• The ophthalmoscope and how to use it
• Retinoscopy (or shadow test) in the determination of refraction at one meter distance, with the plane mirror