Hi all. I'm currently gathering information to appeal my RG8 being unsuccessful. Does anyone know what tests need to be done for high and low contrast sensitivity and for night vision? I've spoken to my Opthalmologist and also been to been to Moorfields eye hospital and no one there knows. Could someone please recommend an eye specialist in London? Criteria 6 regarding corneal refractive surgery states I must provide appropriate documentary evidence to prove that: Specialist visual function testing has been carried out with satisfactory results at least 12 months following surgery, including assessment of refraction, symmetry of visual acuity, high and low contrast sensitivity ( with and without glare sources),astigmatism, glare, corneal clarity, masked mild hypermetropia and night vision.