The National Eye Institute Visual Function Questionnaire in the Macular Telangiectasia (MacTel) Project – MacTel Project Report No. 1.

Clemons TE, Gillies MC, Chew EY, Bird AC, Peto T, Figueroa M, Harrington MW.
Investigative Ophthalmology & Visual Science 2008;49(10):4340-4346.