• Miosis Eye

What is Eye Miosis? — Causes and Treatment

Eye mio­sis occurs when the pupil in the eye shrinks and doesn’t re-enlarge.

Nor­mal­ly, pupil size dilates (enlarges) and shrinks in reac­tion to light and some­times, strong emo­tions. Pupils dilate in dim light to allow more light in and shrink down to a small dot when exposed to bright lights.

In the case of abnor­mal eye mio­sis (also called pin­point pupil, mio­sis eye or just mio­sis), the pupil remains small. If this hap­pens sud­den­ly and is not under­stood to be part of a diag­nosed con­di­tion, it can indi­cate some­thing is seri­ous­ly wrong. Get med­ical atten­tion right away.

What Causes Miosis Eye?

Mama always told me not to look into the sights of the sun,” Bruce Spring­steen wrote. Good advice, but that won’t cause mio­sis eye. For that mat­ter, nei­ther will mad men, drum­mers, or bum­mers.

There are a lot of caus­es behind mio­sis.

  • An eye injury can cause inflam­ma­tion and swelling behind the eye, which makes it more dif­fi­cult for the pupil to react to light.
    • Uveitis is one con­di­tion in which inflam­ma­tion that the eye’s mid­dle lay­er — the area between the scle­ra (whites) and inner eye lay­ers that can cause mio­sis.
  • Med­ica­tion side effects can shrink pupils, par­tic­u­lar­ly nar­cotics, Val­i­um, and anti­his­t­a­mines.
  • Genet­ics: some peo­ple inher­it a gene that pre­vents the devel­op­ment of the mus­cle that con­trols pupil size. Many are near­sight­ed, and they are more like­ly to have glau­co­ma.
  • Age: most new­borns have small pupils in the first cou­ple of weeks while their eyes adjust to the out­side world. Pupils also shrink with age — one rea­son why old­er peo­ple have trou­ble see­ing at night.
  • A severe lack of Vit­a­min D can cause a host of opti­cal prob­lems, includ­ing mito­sis eye.

A rare dis­ease called Horner’s Syn­drome dis­rupts com­mu­ni­ca­tion between the brain and parts of the face, includ­ing the eyes, and can shrink one or both pupils. Horner’s can be inher­it­ed or it can be trig­gered by a neck injury, neck surgery, brain tumor, and shin­gles. Neu­rosyphilis, which occurs when untreat­ed syphilis bac­te­ria enter the brain, can also trig­ger mito­sis.


Miosis Eye Treatment Depends on the Cause

Mio­sis is usu­al­ly viewed as a pos­si­ble symp­tom for a more seri­ous con­di­tion or dis­ease like those list­ed above. It can be an impor­tant clue to con­firm oth­er dis­eases and con­di­tions, as well such as clus­ter headaches, brain­stem stroke, and Lyme dis­ease.

Mio­sis caused by inflam­ma­tion after an eye injury is treat­ed with eye drops that force pupils to dilate, such as atropine or homa­t­ropine. They can work for up to two weeks.

Oth­er­wise, mio­sis is most like­ly to improve through treat­ment for under­ly­ing dis­eases and con­di­tions.

  • Clus­ter headaches, which often have sev­er­al eye-relat­ed symp­toms such as droop­ing eyes and light sen­si­tiv­i­ty, have been suc­cess­ful­ly treat­ed with cor­ti­cos­teroids, blood pres­sure med­ica­tion, and mela­tonin that have also relieved mio­sis eye.
  • Antibi­ot­ic treat­ment for Lyme dis­ease has cleared up asso­ci­at­ed infec­tions and relieved mio­sis and oth­er symp­toms.
  • Stan­dard stroke treat­ment like stents or med­ica­tion to dis­solve the block­age can clear up asso­ci­at­ed symp­toms.
  • Adults with Vit­a­min D defi­cien­cy are ini­tial­ly treat­ed with large dos­es of the vit­a­min — 50,000 IU of D3 once a week or 6,000 IU dai­ly for eight weeks fol­lowed by a main­te­nance reg­i­men of 1500 — 2000 IU each day.

Treat­ments for Horner’s Syn­drome focus­es on its treat­ing the trig­gers under­neath it.   

If you have ques­tions about your eyes and con­di­tions or dis­eases that affect them, con­tact one of our offices for a con­sul­ta­tion. Any unusu­al change in your eyes should be exam­ined by a physi­cian or oph­thal­mol­o­gist as soon as pos­si­ble.

April 12th, 2019|Comments Off on What is Eye Miosis? — Causes and Treatment

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