1. The orthoptic treatment of convergent squint in young children;Worth;Trans Ophthalmol Soc UK,1901
2. The Worth four dot test: is it really “worthless”?;Frank;Am Orthopt J,1981
3. The polarized three-dot test;Arthur;J Pediatr Ophthalmol Strabismus,1987
4. Artifacts in fusion and stereopsis testing based on red/green dichoptic image separation;Simons;J Pediatr Ophthalmol Strabismus,1994
5. Worth vs polarized four-dot test;Arthur;J Pediatr Ophthalmol Strabismus,1993