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How likely is spontaneous retinal detachment in high myopes?

I am 28 y/o male with high myopia of -9 in left eye and -8.5 in the right and bilateral lattice degeneration. As my doctor suggested I ruled out activities that could cause any eye trauma (I work in the library). Recently I have been informed that retinal detachment can happen spontaneously - a fact that I wasn’t quite awarie of because I thought it was a minority. For the last few days I’m feel very nervous and obsess over that I might get a retinal detachment. Is there any way to prevent it from happening? What ja the chance I will get nontraumatic RD?
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177275 tn?1511755244
retinal detachments (RDs) are classified into rhegmatogenous (due to a hole in retina caused by vitreous traction usually) and non-regmatogenous which are not due to holes and due to things like tumor under retina.  They are rare.  Most all RDs are rhegmatogenous.   Risk of RD in general population, not having had cataract surgery and no risk factors is low about 1 in 8000 to 12000.   Your risk is about one in 4000-6000.   Live healthy, avoid trauma,  opt out of contact sports,  don't go on whip-your-neck amusement park rides. See an ophthalmologist yearly.
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Thank you for your answer doctor. I was concerned after reading one study:”The influence of refractive error and lattice degeneration on the incidence of retinal detachment.” Burton TC. Trans Am Ophthalmol Soc. 1989 Where it was listed in table XV that the lifetime risk of retinal detachment in individuals with refractive error greater than -5 diopters and accompanied by lattice degeneration (which is my category) is equal to a whooping 35.9% (!). After reading this I became very concerned (the risk of over 1/3 seems very high to me) but your response calmed me down. But I am still wondering if I should mind this study and trust that high percentage risk listed above. What do you think about this doctor?

Link to the study (Table XV is on the bottom of lagę 11):
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1298542/pdf/taos00012-0169.pdf
That is a VERY OLD ARTICLE (almost 30 years) and the Journal is not even published anymore.     You will feel better about this:   "In a long-term natural history study, however, Byer19 showed that in 423 adult eyes with lattice degeneration followed for an average of >10 years, retinal detachment occurred in only 0.7%." 19. Byer NE. Long-term natural history of lattice degeneration of the retina. Ophthalmology. 1989;96:1396–1402. [PubMed]  
Thank you doctor for your time and avice! Your words are truly calming.
Happy to help. I have lattice in both eyes and retinoschesis.
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