Chronic progressive ophthalmoplegia or PEO tends to appear in adults between the ages of 18 and 40. Usually, it starts with drooping eyelids and difficulty controlling muscles that are normally used to coordinate the eyes. [belmarrahealth.com]

Is the diplopia monocular or binocular? Whether the diplopia is monocular or binocular should be determined first. [jnnp.bmj.com]

Neuro-Ophthalmology Diplopia – Double Vision Diplopia, also known as double vision, occurs in one of two ways. The double vision is either present with one eye open (monocular diplopia) or only with both eyes open (binocular diplopia). [eye.uci.edu]

What is the significance of horizontal diplopia (where the images are side-by-side) as opposed to vertical diplopia? Answer 4-5. [dartmouth.edu]

Strabismus can cause vision loss, trouble with depth perception, or double vision (which doctors call diplopia). [everydayhealth.com]

Some developmental abnormalities include coloboma, microphthalmia (small eye), and optic nerve hypoplasia. These abnormalities often result in vision loss. [dmei.org]

Chronic progressive external ophthalmoplegia Chronic progressive external ophthalmoplegia typically appears in adults between the ages of 18 and 40 years. [healthline.com]

Types of Ophthalmoplegia There are two different types of ophthalmoplegia: chronic progressive external ophthalmoplegia and internal ophthalmoplegia (INO). [belmarrahealth.com]

A combination of ptosis, weakness of eyelid closure, and restricted eye movements is strongly suggestive of a myopathic cause such as chronic progressive external ophthalmoplegia (CPEO). [jnnp.bmj.com]

It can affect one eye or both, equally or unequally, and often results in oscillopsia. [jnnp.bmj.com]

Additionally, the child may complain of double vision (diplopia), jiggling vision (oscillopsia), or blurry vision. [pediatricweb.com]

When the slow movement that takes the eye away from the target is followed by a fast phase, it is called jerk nystagmus, and if both phases have equal velocity, pendular nystagmus is observed. [jnnp.bmj.com]