Pratt-Johnson J A
Doc Ophthalmol. 1984 Aug 15;58(1):119-23. doi: 10.1007/BF00140909.
With binocular perimetry suppression was found for near vision in patients with esotropia with convergence excess, whereas fusion was present for distance. If a bitenuporal stimulation was obtained by means of base-out prisms, diplopia was elicited instead.