why i appreciate Friday the 13th

In January 2009, I received a considerable shock when I woke up to a double vision. Its departure some two months later was as mysterious as its arrival. Everything in sight had an identical twin. It was quite an agony to endure at the beginning, I somehow got used to it that I totally knew, almost by second nature, which was the real thing and which was the double. The only problem was walking down the stairs and alighting from buses, for a few times I thought I would fall to death because I couldn’t tell which was the real step.

I sought medical advice from the eye specialist centre and had several nostalgic tests and checks, you know, those performed back then in school during the yearly medical check-up as part of a student’s welfare. Haha! I loved that because it meant skipping classes!

It turned out that the fundamental health and function of my eyes were fine! Except…… I was short-sighted, which was not a news to me. Further examinations followed but to no avail. I felt second to an alien when the puzzled doctors surrounded me and repeated certain examinations at every appointment. They did eventually come out with a possible cause that was comprehensible to me yet there was no cure for it. *shrug shoulders*

While I was living with a rubber prism attached to one of my spectacle lenses to provide temporary correction, it disappeared out of the blue, as mysteriously as how it fell upon me. I woke up to a normal vision one morning as I opened my eyes. It was Friday, 13th March 2009.


2 thoughts on “why i appreciate Friday the 13th

  1. Benign causes of intermittent diplopia include dry eye; superior oblique myokymia, early Graves’ disease, cyclic oculomotor palsy, an old fourth nerve palsy, ocular neuromyotonia with previous radiation; brain and brain stem factors such as vergence and divergence insufficiency following trauma, use of numerous medications, convergence spasm, and strabismus. Serious causes that require a more extensive work-up are Graves’ disease, ocular myasthenia gravis, neuromyotonia, demyelination, ocular neuromyotonia without previous radiation, and pituitary tumors.

    Superior oblique myokymia can be identified at the slit lamp by sometimes subtle intermittent movements (oscillopsia) of the superior oblique muscle. Monofixation syndrome, which appears in about 1% of the population, can manifest as intermittent or continuous diplopia as a result of a small comitantesotropia. Patients with ocular myasthenia gravis may have right-gaze diplopia; and the left may not adduct. Patients with demyelinating disease may exhibit diplopia following exercise. In cases of suspected myasthenia gravis, Cogan’s lid twitch is a positive clue along with intermittent diplopia.

    Unexplained intermittent diplopia needs further work-up
    Look for common conditions that do not require imaging,
    Think of ways to bring out the diplopia while the patient is in the office, and always consider ocular myasthenia gravis in any patients with intermittent diplopia. Always image and evaluate intermittent diplopia that appears to be brain-based, vascular, or demyelinating, and resulting from tumors or an unknown cause.


    • hi sumin, thank you for the link and the extract. i hope my case was simply due to fatigue, which was suggested by a Chinese physician whom a kind friend enquired. images of the head including the brain showed no signs and clues. no matter what, i am keeping at least the basics of a healthy lifestyle. we shall see. 既来之则安之。

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