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Doctor insights on: What Is The Worst Vision You Can Have

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What is the worst vision you can have and still pass a driving test?

What is the worst vision you can have and still pass a driving test?

Check your state: "visual acuity screening standard is 20/40 or better with both eyes together, no worse than 20/70 in the poorer eye. Drivers who fail the vision screening are referred to a vision specialist. Drivers with visual acuity of 20/200 or worse may not be licensed to drive. Drivers may use bioptic telescopes for driving, but may not use them to meet the vision standard".

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Dr. Richard Bensinger
1,712 Doctors shared insights

Vision (Definition)

Vision is a feature of a person's brain that allows him to see. He must have normal eyes, optic nerves (that stretch from the eyes to the back of his brain), and visual cortex (the vision center in the brain), in order to see properly. An ophthalmologist is a ...Read more


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What is the worst vision you can have and still pass your driving test?

What is the worst vision you can have and still pass your driving test?

Varies by State: Most states set a limit of 20/40 in the best eye for their limit. There is some variation by each state. Check with your department of motor vehicles for the rules in your state.

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What is the worst vision you can have and safely drive?

What is the worst vision you can have and safely drive?

Varies: Each state has its own limitations but the usual is 20/40 or better in the best eye. The field of vision is also included and must be 110 degrees in most states. Whatever criteria exists, you should only drive if you feel comfortable for the conditions encountered.

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What is the worst vision that they will perform lasik surgery on?

What is the worst vision that they will perform lasik surgery on?

Eye parameters: The level of vision is not the criteria used for lasik evaluation. It is a combination of the refractive error (numbers like -6.00 on your eyeglass prescription) and the thickness of the front of the eye. Other factors include general health, age and history of eye disease. Check with your ophthalmologists for suitability or with the lasik surgeon you have chosen.

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What are the worst symptoms of cushings disease with regards to your vision?

Field loss: Cushing's is due to a pituitary tumor that causes the body to secrete excess steroid. If the tumor is large enough, it can squeeze on the optic nerve with loss of vision. Prolonged steroid levels in the body can also cause cataracts and glaucoma. These are the major effects of this condition on the eyes.

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Can your vision get worst if you wear glasses over time?

Can your vision get worst if you wear glasses over time?

No: This is a common misconception. Wearing glasses to correct refractive error does not make your vision worse or increase your refractive error over time. Refractive error is an imbalance between the length of your eye and it's optical power. Glasses simply compensate for that imbalance.

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Please help! What is the worst your vision can be before you laser surgery is no longer an option?

Please help! What is the worst your vision can be before you laser surgery is no longer an option?

Any vision: Any vision is worth saving so if there is a laser procedure that would protect and/or improve your vision, even 10%, I would consider it worthwhile.

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What are vision impairments and do they get worst?

What are vision impairments and do they get worst?

Form of vision loss: Visual impairment is the loss of vision from some disease, trauma or degeneration that cannot be corrected by glasses, medication or surgery. In the us we use different terms to signify the degree of impairment such as "low vision", "legally blind" and "totally blind". These are defined by how good the best corrected vision is as well as how much of the peripheral vision is intact.

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I had my eyes examined recently and it seems my left has actually improved in vision when it was my worst and weakest eye. Is this possible?

I had my eyes examined recently and it seems my left has actually improved in vision when it was my worst and weakest eye. Is this possible?

Absolutely, visual: Acuity primarily determined by curvature of cornea, the 8 extraocular muscles (which pull to rotate the eye), the shape of the lens (behind the iris) combined with intraocular pressure so as to focus light rays on the fovea centralis portion of the retina combined with light receptor density. Thus there are multiple interacting factors which can change, both quickly & over time, to change focus.

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My left eye has been red for around 5 days, but my right is fine. The vision on my left eye is a little worst these few days, what's wrong? No allergies

An exam helpful: Red eye without comment on pain, but worsening vision makes me wonder about low grade inflammation, perhaps asymmetrical dryness or allergy. The latter two usually feel scratchy, dry, or itchy. With your arthritis like systemic history, i'd wonder whether you have an anterior uveitis. An exam is necessary for you and I recommend seeing an ophthalmologist.

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Often feel dizziness. And sometimes dizzy brings white spot vision. Hand shaking getting worst?

Often feel dizziness. And sometimes dizzy brings white spot vision. Hand shaking getting worst?

Dizzy: There are many causes of dizziness. When you also see white spots, I am concerned about poor blood circulation, which may affect the visual cortex. In any case, call your primary care doctor for an appointment-- I am concerned about your health.

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Sudden blurry vision with waves in it and now worst head ache of my life. I have a clotting disorder. Should I go to the ER or wait it out.

Sudden blurry vision with waves in it and now worst head ache of my life. I have a clotting disorder. Should I go to the ER or wait it out.

Classic migraine: Your symptoms are that of a classic migraine headache. But if you get any other neurological symptoms you should go to the er. Generally, visual symptoms like you had lasting 20-30 minutes followed by a bad sick headache are migraine.

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I have a irregular period but its worst then before, I also have pain on my left side, cramps in my stomach, back pain, blurred vision and headache.

I have a irregular period but its worst then before, I also have pain on my left side, cramps in my stomach, back pain, blurred vision and headache.

Common problem: Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections ; hormonal changes can cause spotting. If there is a concern for pregnancy then do a home pregnancy test. There are many options available to help regulate the menstrual cycle. Schedule a visit.

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How can I impair my vision?

How can I impair my vision?

Really?: I'm not advising 'ways' to harm vision. Your eyes are probably the most precious resource that you have, so protect & take care of them. If you are having vision problems, see an ophthalmologist for an evaluation.

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What is your non-vision time?

?????: I have never heard of this term but I guess it refers to periods without visual input (ie when eye are closed or during sleep).