Section I is to be filled out by the applicant; telescopic readings are on the reverse.
Acuity readings: readings that indicate a plus (+) or minus (-) are not acceptable.
Peripheral: Monocular = 70° temporal and 35° nasal (105° total field); Binocular = 140° total temporal field.
Under 140°: if the total field of vision equals less than 140°, the applicant may still be able to qualify for a driver's license with restrictions.
Telescopic lenses: for prescription spectacle-mounted telescopic lens wearers, Sections I, IV and V (front) and the telescopic sections on the reverse must be completed.
| Question | Answer |
|---|---|
| Form Name | DSD X 20 |
| Form Length | 2 pages |
| Fillable? | Yes |
| Fillable fields | 98 |
| Avg. time to fill out | 17 min |
| Edition | May 2026 |
| Issuing agency | Illinois Secretary of State |
| Valid for | Six (6) months from the examination date |
| Other names | DSD X 20, DSD X20, Vision Specialist Report, Illinois DMV vision form, Illinois vision specialist report |
| Official source | DSD X 20 (Rev May 2026), Illinois Secretary of State |
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