Pars Planitis (Intermediate Uveitis)

What is Pars Planitis?

Pars planitis is a chronic type of intermediate uveitis in which the inflammation sits mainly in the vitreous, the gel inside the eye, and the pars plana region near the peripheral retina, and no infection or systemic disease is found.^[1] It is characterized by clumps of inflammatory cells in the vitreous called snowballs and a whitish exudate along the pars plana called snowbanking.^[1] Intermediate uveitis makes up roughly 9% to 15% of uveitis cases.^[2]

Common symptoms

Uveitis in general causes eye redness, pain, light sensitivity, floaters and blurred vision.^[2] In intermediate uveitis, floaters and blurred vision are the symptoms most often reported, and many people have little pain or redness. Untreated uveitis can lead to cataract, glaucoma, macular edema, retinal detachment and vision loss.^[2]

Causes and risk factors

The cause of pars planitis is unknown. Clinical and tissue findings suggest an autoimmune process, probably a reaction to a protein made in the body, with T cells prominent in the inflamed tissue.^[3] There is some genetic predisposition, and multiple sclerosis and optic neuritis have been described alongside pars planitis in a number of studies.^[3]

Other forms of intermediate uveitis can occur with systemic illness or infection. Doctors check for these first, because pars planitis is diagnosed only when none is found.^{[1, 4]}

How it is diagnosed and treated conventionally

An ophthalmologist diagnoses pars planitis from an eye examination that shows the characteristic snowballs and snowbanks, usually with imaging, and blood tests when needed to look for infection or a linked disease.^{[1, 4]}

Mild intermediate uveitis may be monitored without initial treatment. Moderate to severe disease carries a high risk of sight-threatening complications and needs injected or systemic corticosteroids and immune-suppressing drugs.^[2] Antimetabolites, T-cell inhibitors and biologics are also used, and in some cases surgery.^[4] The goal is to control inflammation while keeping steroid use as low as possible.^[2]

Common complications include epiretinal membrane, cataract, cystoid macular edema, retinal detachment and retinal vasculitis.^[3]

Why Pars Planitis calls for a whole-person approach

Pars planitis is an eye disease first, and medical treatment cannot be replaced. It is also a chronic, relapsing condition, and living with it involves more than the eye itself. Long monitoring, repeated treatments and worry about vision can affect sleep, mood and daily life.

The factors below are areas where supportive care may add comfort. They do not treat the eye inflammation.

An immune-driven process

The evidence points to an immune-mediated disease, with T cells prominent in the eye.^[3] This is why treatment is directed at the immune response, by an eye specialist.^[5]

Treatment burden

Chronic non-infectious uveitis can need repeated injections, and systemic immunosuppressive treatment has its own adverse effects because it inhibits immune function.^[5] A main treatment goal is to minimize corticosteroid use because of its side effects.^[2]

Linked conditions

Multiple sclerosis has been described alongside pars planitis, so symptoms outside the eye should be mentioned to your physicians.^[3]

Stress and sleep

Worry about vision and ongoing treatment can disturb sleep and mood. Acupuncture and ashwagandha have been studied for sleep and stress in other groups, as described below.

Acupuncture as supportive care in Pars Planitis

What the research shows

No clinical trials of acupuncture for pars planitis or other uveitis were found in PubMed, so there is no evidence that acupuncture affects eye inflammation or protects vision. Acupuncture should never be used in place of, or to delay, treatment from an eye specialist.

Research in other groups exists for sleep problems. A review of 24 trials of acupuncture for insomnia included a meta-analysis of 15 trials that found better sleep scores than drug treatment after about three weeks, with large differences between trials.^[6] A 2024 review in primary insomnia reported better sleep, less fatigue and fewer emotional symptoms, while noting weaknesses in trial methods.^[7] These studies did not include people with uveitis.

How acupuncture may work

For sleep, researchers propose effects on brain chemicals, inflammatory signals and the stress hormone axis, mostly from animal studies.^[7] These are proposed explanations. No study has shown that acupuncture changes inflammation inside the eye.

What treatment involves

Treatment uses fine, sterile, single-use needles placed at points chosen for the individual, usually left in place for about 20 to 40 minutes. A short course of visits is followed by reassessment. Points near the eyes are not appropriate during active eye inflammation, and your practitioner should know your diagnosis first.

In prospective studies, about 9 in 100 patients had a minor reaction such as bleeding, pain or redness at a needle site, and serious events occurred in about 1 in 10,000 patients.^[8] Tell the practitioner first if you have a bleeding disorder, take blood thinners, are pregnant, or have a pacemaker (relevant to electroacupuncture). Because immune-suppressing drugs raise infection risk, tell us about any recent infection.

Ayurvedic medicine as supportive care in Pars Planitis

The Ayurvedic view

Ayurveda does not describe pars planitis by that name. Inflammatory eye conditions are traditionally linked to aggravated Pitta, the principle said to govern heat and transformation, and classical eye texts describe them under categories such as Abhishyanda. These are traditional categories for choosing care, not biomedical diagnoses.

Therapies that may be used

Ayurvedic support is individualized and may include:

• Regular meals and steady sleep hours intended to ease stress and fatigue
• Relaxation practices such as breathing exercises and gentle yoga
• Herbs such as turmeric (curcumin) chosen individually, only after review of your medicines and your eye specialist's plan

Do not put oils, drops, washes or herbal preparations in or near the eyes on your own. Panchakarma, the traditional cleansing program, is not appropriate for people with active uveitis, who may be acutely ill, take high-dose steroids or other immunosuppressants, or be frail. It is also not appropriate during pregnancy.

What the research shows

No clinical trials of Ayurvedic treatment for pars planitis were found. The nearest research is on curcumin, the active compound of turmeric, in a different type of uveitis. A retrospective study of 27 young patients with juvenile arthritis-associated uveitis, who took a curcumin complex alongside immune-suppressing treatment, reported that 22 reached inactive inflammation (mild flare in the front of the eye) after a year. It had no control group, so it cannot show that curcumin caused the change.^[9] A review describes anti-inflammatory effects of curcumin in retinal disorders and notes its low solubility and poor absorption.^[10]

Ashwagandha has trial evidence for stress and sleep in other adults. A meta-analysis of 12 trials found lower anxiety and stress scores than with placebo, though with low certainty and large differences between trials.^[11] A meta-analysis of 5 trials found a small improvement in sleep, with limited long-term safety data.^[12] Its effect in uveitis, or on immunosuppressive drugs, has not been established.

Herbal medicine as supportive care in Pars Planitis

Herbs and formulas that have been studied

Research on herbs in uveitis is mostly about mechanisms. A review of natural product ingredients studied for uveitis described effects on cytokines and T helper cells.^[13] Curcumin is one example studied in eye inflammation.^[10] Chinese medicine traditionally treats eye inflammation with heat-clearing and liver-calming formulas, but we found no clinical trials of them in uveitis.

What the research shows

There are no herbal trials for pars planitis, and for uveitis in general the evidence is very limited. The natural product review focuses on mechanisms, and its authors call these compounds promising, which is not the same as showing benefit in patients.^[13]

A survey of 89 patients at an inflammatory eye disease clinic found that 42% used complementary medicine for their eyes, most often vitamins, herbs, prayer and acupuncture. Its authors warned that such therapies may influence the disease, cause side effects and interact with immunosuppressive treatment, and urged doctors to ask about them.^[14]

Safety and herb-drug interactions

Herbs are active substances and can interact with medicines, including the immune-suppressing drugs used for uveitis. A literature review documents interactions of herbs with ciclosporin and tacrolimus, mostly from case reports.^[15] Case reports describe bleeding when warfarin was combined with herbs including dang gui, dan shen, ginger, ginseng and Boswellia.^[16]

Herbal and dietary supplements account for a notable share of drug-induced liver injury in the United States, which matters if you take drugs such as methotrexate or azathioprine.^[17] About one fifth of Ayurvedic medicines bought online contained detectable lead, mercury or arsenic.^[18] Herbs should come from tested sources and be prescribed individually. Tell us if you are pregnant or breastfeeding or have liver or kidney disease.

Translating traditional medicine into modern biological language

This is interpretation, not equivalence. Chinese medicine might describe a red, uncomfortable eye as liver fire or heat, and Ayurveda as Pitta imbalance. Researchers describe pars planitis as probably autoimmune inflammation, with T cells in the vitreous and pars plana.^[3]

Laboratory work on natural compounds looks at cytokine signaling and T-cell behavior, which loosely parallel the idea of "heat" in the eye.^[13] This is a hypothesis from mechanism research, not evidence that a traditional pattern corresponds to a biological process in patients.

How this care fits with your medical care

Complementary care is a supplement to your ophthalmologist's and other physicians' treatment, never a substitute. Do not stop or change eye drops, steroids, immunosuppressants or biologics without your prescriber, and keep every eye examination. For a condition like this, we ask that you are under a physician's care for it and that your treating team knows you are receiving complementary care.

We do not diagnose or monitor eye disease. Please bring your diagnosis, your eye specialist's contact details, a full list of medicines, eye drops and supplements, and any report of a linked condition.

When to seek urgent medical care

Uveitis can threaten vision, and new symptoms should be assessed quickly by an eye specialist.^[2]

• Sudden loss of vision or a new dark area in your vision
• A new red, painful eye, especially with light sensitivity or blurred vision
• A sudden shower of floaters or flashes of light, which can signal retinal detachment
• Severe eye pain, nausea or vomiting with vision changes
• Fever or other signs of infection while taking immune-suppressing medicine

If any of these occur, call 911 or go to the nearest emergency department.