True about retinoscopy with a plane mirror
Perform at 1 meter away Retinoscopy Differentiate b/w type of refractive errors Optical error & organic error Perform at 1 meter away Reflection of light with retinoscopy (plane mirror) 1. Against - myopia > -1 2. Witha. Myopia < -1 ( or)b. Emmetropia = 0 (or)c. Hypermetropia = + value 3. No Movements -Myopia = -1 With Concave mirror retinoscopy the movements are reversed
In hypermetropia the red glow moves in opposite direction
In myopia the red glow moves in same direction
In emmetropia the red glow moves in opposite direction
Done at 1 meter away from patient
FMGE 2018