Jul 31, 2024 · A Snellen chart is used to test far vision. It has several rows of letters. The letters on the top line are the largest; those on the bottom line are the smallest. You stand 20 ft (6 m) from the chart, cover one eye, and read the smallest row of letters you can see on the chart.

Alberta's Drivers License Vision Requirements Class 1 - Professional (Any Vehicle) Visual acuity is not less than 20/30 (6/9) with both eyes open and examined together. Worse eye not less than 20/100 (6/30).

Static Visual Acuity – Each eye must be tested separately using a Snellen Chart (or equivalent) at the distance appropriate for the chart under bright photopic lighting conditions of 275 to 375 lux (or greater than 80 candelas/m).

Jul 17, 2023 · In Alberta, the minimum visual acuity required for a standard Class 7 learner’s driver's licence — and subsequent Class 5 licence — is 20/50 in at least one eye. If you don’t meet this standard, you’ll likely need to wear eyeglasses or contact lenses while driving.

Vision tests check many different functions of the eye. Some of the tests measure your ability to see details at near and far distances, check for gaps or defects in your field of vision, and evaluate your ability to see different colours.

Oct 20, 2015 · When you go for an eye exam, your eye doctor uses an eye chart to measure how well you see at a distance compared with others. The classic example of an eye chart is the …

An eye chart is a chart used to measure visual acuity comprising lines of optotypes in ranges of sizes. Optotypes are the letters or symbols shown on an eye chart. [1] Eye charts are often used by health care professionals, such as optometrists, physicians and nurses, to screen persons for vision impairment.

May 10, 2023 · Understand Alberta's driver's license vision requirements and the role of regular eye exams. Read our article to learn more.

Eye Exams and Eye Health. Get the facts of when children, adults and seniors should have eye exams. Plus, what you should be aware of at every stage of life. Learn More

Acceptable testing procedures include: Pelli-Robson contrast sensitivity chart, either the 25% or 11% Regan low-contrast acuity chart, Bailey-Lovie low-contrast acuity chart or the VisTech contrast sensitivity test.