Retinal tears
What is a retinal tear?
A retinal tear is a small tear in the retina, the layer at the back of your eye responsible for vision. Think of this like a thin film at the back of the eye that is meant to be flat and intact.
What causes retinal tears?
The most common cause of retinal tears is a posterior vitreous detachment (PVD). This occurs when the vitreous gel, a jelly-like substance that fills the inside of your eye, separates from the retina. This separation tugs on the retina, sometimes causing a tear.
The chance of retinal tears also increase with the following:
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Trauma to the eye or head (e.g. car accidents that involve sudden head movement)
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Being short-sighted (requiring glasses for distance vision)
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Lattice degeneration (a weakening of the retina)
What are the symptoms of a retinal tear?
A sudden onset of floaters (tiny specks or spiderwebs that appear in your vision) is the most common symptom of a retinal tear. You may also experience:
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Flashes of light in one eye
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A sudden decrease in vision
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A curtain-like shadow over your field of vision
How are retinal tears diagnosed?
Retinal tears are diagnosed by an Ophthalmologist or Optometrist during a comprehensive eye exam.
How are retinal tears treated?
The most common treatment for a retinal tear is laser retinopexy. Essentially, I use a special laser to seal off the tear and prevents this from progressing to a retinal detachment.
In some cases, surgery may be necessary to repair a retinal tear (if the tear is too big or if laser alone not adequate to provide a good seal).
Photo demonstrating a retinal tear (blue arrow)

Fresh retinal laser marks after laser to the tear (orange arrows)

Do I need to treat my retinal tear? What happens if I just leave it?
If a retinal tear is not treated, it can lead to a retinal detachment, which can result in vision loss.