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(dŭb′l) [L. duplus, twofold]
Duplicate, or combining two qualities.
Medical Dictionary, © 2009 Farlex and Partners

Patient discussion about double

Q. what is the cause for double vision

A. Double vision, or diplopia, as it's called, may be due to many conditions, including disorders of the muscles of the eye (extra-ocular muscles) and the nerves controlling them, disorders of the eye ball (enlarged eyeball as in Graves' ), and sometimes disorders of vision.

Diplopia may manifest important conditions, so consulting a doctor (e.g. neurologist or ophthalmologist) may be wise.

You may read more here:

Q. I have fibromyalgia and am having terrible vision problems...double, blurred, feel off blance.Is this common?

A. Blurry vision is not a usual symptom in fibromyalgia. If you are experiencing this on a permenant basis you should see a doctor- either a neurologist or an ophthalmologist to rule out other vision conditions that might be causing this.

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References in periodicals archive ?
I'd probably double back to The Prophet, because Khalil Gibran tells you how to live, how to resolve conflict, how to love your mate, raise your kids, keep your head right when others are losing theirs.
Early solutions were to extend the water tanks or make the strands double back through the same tank.
Leute Bok is a double back which was discontinued by the brewery in the 1930s, but revived in 1997.
Often the results may be disappointing, bringing about the need to double back to an earlier point in the process, and throwing the project off schedule.
This too was cancelled and so was ushered on to a Swansea train and told to change at Bridgend and double back on myself.
The multiple narratives consistently double back on themselves (the credits appearing somewhere in the middle of the film), recasting the film's genre (is it a musical?
no eyes" speech): "Kyd's poetry aims rather to articulate an entangling web of relations, and its force depends on the preserved tension between urgency of individual feeling and the necessity, imposed by the social structure of the represented world, to postpone, double back, 'go by' (as Hieronimo famously described it) in rhetoric as in action" (72).
The building's structure requires visitors to traverse the museum in a single direction and then double back in order to exit.