A full-thickness macular hole is a physical gap in the center of the retina. No eye drop, herb, oil, diet, exercise, or Ayurvedic therapy closes one, because the problem is mechanical rather than metabolic. Vitrectomy with internal limiting membrane peeling and gas tamponade closes well over ninety percent of them, and how well you see afterward depends strongly on how long the hole has been open before it is repaired. Weeks matter here. If you have been told you have a macular hole, the useful question is not which therapy to try first but how soon surgery can be scheduled.
Complementary-care boundary: Ayurvedic eye care does not replace pars plana vitrectomy, internal limiting membrane peeling, gas or air tamponade, post-operative positioning, cataract surgery after vitrectomy, or the decision to observe or treat vitreomacular traction under a retina specialist. In macular hole there is no gray zone about this. Surgery is the only treatment that closes the hole, and every week of delay is measurable in the vision you get back.
An Integrative Approach to the Drivers of Macular Hole
The macula sits under a gel called the vitreous. With age that gel liquefies and separates from the retinal surface, and in most people this happens uneventfully. In a minority the gel releases everywhere except at the fovea, and the resulting traction splits the foveal tissue apart. What starts as a cyst or a partial defect becomes a full-thickness opening, and the sensory retina that used to sit at the exact point of fixation is no longer there. That is why patients describe a dark or missing spot in the middle of whatever they look at.
Because the mechanism is traction and tissue separation, the treatment is mechanical too. The surgeon removes the vitreous, peels the thin internal limiting membrane from the retinal surface to release tangential traction and improve compliance, and places a gas bubble that holds the edges of the hole flat while they reseal. Nothing taken by mouth or applied to the eye reproduces any part of that sequence. Honest integrative care in this condition means saying so first and offering help around the edges second.
Those edges are still real. People wait for surgical dates, worry about the anesthetic, struggle with positioning, develop dry eye and irritation from post-operative drops, become anxious about the other eye, and live with distortion for months after a technically successful operation. Those are the problems a supportive service can legitimately address. None of them are the hole itself.
Why Macular Hole Care Should Be Multi-Factorial
Duration Is the One Variable Patients Actually Control
Closure rates stay high even in longstanding holes, but visual recovery does not. An individual participant data analysis pooling randomized trials found that the longer symptoms had been present before surgery, the worse the final acuity, with the effect visible across the whole range rather than only in very old holes. Nobody can undo the months already spent trying drops and supplements, but everyone can stop adding to them.
Hole Size Changes the Operation and the Prognosis
Minimum linear diameter measured on optical coherence tomography separates small, medium, and large holes, and that number guides whether a standard peel is enough or whether a flap technique, an extended peel, or additional maneuvers are appropriate. Cohort data stratified by hole size show clearly different responder rates. A patient who has been given a diameter in microns has far more information than one who has only been told there is a hole.
The Lens Is Part of the Plan
Vitrectomy accelerates nuclear cataract in phakic eyes, and registry data confirm that a large proportion of patients come to cataract surgery within a few years. Some surgeons combine the procedures. Knowing this in advance prevents the common and demoralizing experience of good early recovery followed by gradual blurring that patients mistake for the hole reopening.
Recovery Is a Logistics Problem as Much as a Surgical One
Positioning, drops, time off work, arranging help at home, and the absolute prohibition on flying while gas remains in the eye all determine whether a good operation translates into a good outcome. Planning these before the date rather than after it is one of the most useful things a non-surgical service can do.
The Fellow Eye Carries Real Risk
Macular hole in the second eye is uncommon but not rare, and the vitreoretinal interface changes that precede it are visible on imaging before symptoms appear. Population-based imaging studies have shown how common vitreoretinal interface abnormalities are in the general older population. A patient who knows what distortion feels like has an enormous advantage in catching a second hole early.
Distortion Outlasts the Hole
Even after successful closure, metamorphopsia and a persistent sense that the two eyes disagree can take many months to settle, and sometimes never fully resolve. Managing that expectation is part of care. So is addressing the dry eye, strain, and sleep disruption that often accompany a long recovery.
Key Biological Mechanisms in Macular Hole
Vitreous Liquefaction and Posterior Vitreous Detachment
The vitreous gel loses structure with age, pockets of fluid form, and the cortex begins to peel away from the retina. In most eyes this separation completes harmlessly and leaves a few floaters behind. The trouble starts when the gel releases everywhere except at the fovea, the one place where its attachment is strongest and the retina is thinnest.
Anteroposterior and Tangential Traction at the Fovea
Residual adhesion pulls the fovea forward as the rest of the gel moves away, and cellular membranes on the retinal surface add a sideways pull. The combination stretches tissue that has no rods to support it and a very thin layer of cone photoreceptors packed over a shallow depression. Optical coherence tomography shows this sequence better than any other test.
Foveal Dehiscence and Cyst Formation
Under sustained traction the foveal tissue splits, forming an intraretinal cyst. If the roof of that cyst breaks, the defect becomes full thickness and the photoreceptors at the edges retract, leaving a round opening with cuffed, elevated margins and fluid under the surrounding retina. That anatomy is what produces the characteristic central blind spot.
The Internal Limiting Membrane and the Müller Cell Scaffold
The internal limiting membrane is the basement membrane of the Müller cells, the glial cells that span the retina. Peeling it removes the surface on which contractile cells sit, releases tangential traction, and allows the stiff retina around the hole to stretch and slide inward. Systematic review evidence comparing peel sizes indicates the peel itself, rather than its extent, is doing most of the work.
Gas Tamponade and Surface Tension
A gas bubble does not push the hole shut. It displaces water away from the hole so the edges stay dry, and surface tension holds the retina flat while glial cells bridge the gap. This is why the bubble must sit against the macula, why positioning is discussed at all, and why the bubble must be allowed to absorb on its own schedule.
Glial Bridging and Foveal Reconstitution
Closure begins with Müller cell processes bridging the defect, after which photoreceptors migrate back toward the center over weeks to months. Restoration of the ellipsoid zone on imaging lags behind anatomical closure, and visual improvement lags behind both. This staggered timeline explains why a patient can be told the hole is closed and still see poorly at the first post-operative visit.
How Macular Hole Presents and How It Progresses
The First Symptom Is Usually Distortion, Not Darkness
Most people notice that straight lines bend, that text has a warped or pinched quality, or that faces look subtly wrong. Only later does a definite gray or black spot appear at fixation. Because the fellow eye compensates so well, holes are often found during a routine examination or when the good eye is accidentally covered.
Stage One: The Impending Hole
At this stage traction has produced foveal cysts but the retina is not yet open. Vision may be mildly reduced and distorted. A meaningful proportion of stage one lesions resolve on their own when the vitreous separates completely, which is why immediate surgery is not always advised at this point and careful short-interval imaging is.
Stages Two Through Four: Full Thickness
Once the retina opens, the hole generally enlarges. Stage two is a small full-thickness defect with the vitreous still attached at the edge. Stage three is a larger hole with the operculum lifted. Stage four means the vitreous has separated completely. Acuity typically falls into the range of 20/80 to 20/400, and the central scotoma becomes obvious.
Size Determines Prognosis More Than Stage
Modern classification uses the minimum linear diameter on OCT rather than the older biomicroscopic stages. Small holes under 250 microns close reliably and recover well. Large holes above 400 microns close less predictably and need modified technique. Cohort data stratified by diameter show these differences plainly, and myopic eyes with long axial lengths behave differently again.
Spontaneous Closure Happens, but Waiting for It Is a Bad Bet
A small number of full-thickness holes close by themselves, usually small ones in younger patients. The odds are low, the process takes months, and every month of waiting costs recoverable acuity if it does not happen. This is the central reason we do not support a trial of alternative therapy before surgery.
The Fellow Eye
Risk in the second eye depends on whether the vitreous has already separated there. If it has, the risk is very low. If it has not, the risk is real enough to justify teaching the patient to check each eye separately every week with an Amsler grid and to call immediately if distortion appears.
How Macular Hole Is Assessed at Netra Eye Institute
Assessment in macular hole is short and pointed, because the purpose is to confirm the diagnosis, establish urgency, and get the patient in front of a vitreoretinal surgeon. We are explicit that we are not the treating service here. What we can do is make sure nothing is missed, that the referral carries the right information, and that the patient understands why the timeline matters.
History, and Above All the Date
We ask when the distortion or central blur was first noticed, and we press for a real anchor: a birthday, a holiday, the week a prescription changed. Duration of symptoms is the strongest modifiable predictor of visual outcome after surgery, so a vague answer of a few months is not good enough for a surgical letter.
Acuity, Amsler Grid, and Metamorphopsia
Each eye is tested separately with correction. The Amsler grid documents the distortion and the scotoma in a form the patient can repeat at home, which matters both for tracking this eye and for surveillance of the other one.
Dilated Examination and the Watzke-Allen Sign
A slit-lamp examination with a macular lens shows the round defect with its cuff of subretinal fluid. Projecting a thin slit beam across the lesion and asking whether the line breaks remains a quick clinical confirmation, although imaging has largely superseded it.
Spectral-Domain OCT and Minimum Linear Diameter
This is the definitive test. It confirms that the defect is full thickness, measures the narrowest width of the hole in microns, shows the base diameter, documents intraretinal cysts and subretinal fluid, and records the status of the ellipsoid zone. That minimum linear diameter is the number the surgeon will use to plan the operation and to predict the outcome.
Telling a Full-Thickness Hole From Its Imitators
Lamellar holes, macular pseudoholes, and epiretinal membrane with a steep foveal contour all look alike to a patient and quite different on OCT. A published consensus definition based on optical coherence tomography exists precisely because these entities were being conflated. They are managed differently, most are observed rather than operated, and mislabeling one as a full-thickness hole leads to unnecessary surgery.
Vitreomacular Traction Without a Hole
Where the vitreous is still attached and pulling but the retina has not opened, the situation is vitreomacular traction, not a macular hole. Many cases release spontaneously, and guideline reviews support observation for a defined period in suitable eyes. Some are treated with surgery and some with intravitreal enzymatic vitreolysis. This distinction changes everything about the plan.
Axial Length, Myopia, and the Posterior Pole
Highly myopic eyes with posterior staphyloma develop macular holes that behave differently, close less readily, and carry a real risk of associated retinal detachment. Multicenter surgical series in large high myopic holes report lower closure rates and modified technique. Measuring axial length and examining the peripheral retina is not optional in these patients.
Lens Status and the Fellow Eye
We record whether the eye is phakic or pseudophakic, because that determines whether cataract surgery is likely to follow or to be combined. We examine the fellow eye specifically for whether the posterior vitreous has separated, since that single finding drives how worried the patient should be about the second eye.
What Ayurvedic Eye Care Offers in Macular Hole
There is no trial evidence, and there is no plausible mechanism. A macular hole is an anatomical defect in neural tissue held open by traction and fluid. Nothing swallowed, instilled, or massaged changes that. The Ayurvedic ophthalmology trial literature that exists at all concerns conditions such as dry eye, and it is small, short, and methodologically limited. It has never been applied to macular hole, and we would not accept it if it had been.
The honest offer is therefore modest and sits entirely around the surgery rather than instead of it. Patients facing vitrectomy have practical and physical problems that nobody else in the pathway has time to address, and those problems affect whether the operation goes well.
- Dry eye, lid inflammation, and surface irritation both before surgery and during weeks of post-operative drops
- Neck, back, and shoulder pain from positioning, and practical advice on how to sustain it
- Sleep disruption while positioning face down or on one side
- Anxiety before surgery and low mood during a slow visual recovery
- General health optimization before a procedure, including blood pressure, glucose, and smoking
- Clear, unhurried explanation of the imaging, the operation, and the recovery timeline
- Structured monitoring of the fellow eye once the operated eye is stable
What it cannot do is unambiguous. Ayurvedic therapy does not close a macular hole, does not shrink one, does not release vitreomacular traction, does not substitute for gas tamponade, and does not reduce the need for surgery. If a practitioner offers you a course of treatment for a macular hole and asks you to postpone a surgical date, they are costing you vision that will not come back.
Where Ayurvedic Therapy Fits Alongside Vitrectomy, Gas Tamponade, and Post-Operative Positioning
After the Surgical Referral Is Made, Never Before It
If you come to us with an untreated full-thickness hole, our first action is to make sure a vitreoretinal surgeon has seen you or has a date booked. We will not start any supportive program while that referral is outstanding. This is not caution for its own sake; it is the single decision on this page with a measurable effect on your vision.
In the Waiting Period Before Surgery
Surgical lists have queues. During that wait we can treat ocular surface disease so the eye is comfortable and the cornea is clear on the day, work on blood pressure and glucose control, help with smoking cessation, and address the anxiety that makes people cancel operations. None of this changes the hole. All of it changes how the operation goes.
During Positioning and Early Recovery
Positioning is physically hard. Practical help with posture, breaks, neck and shoulder care, breathing and relaxation practice, and sleep planning makes a genuine difference to whether people complete what their surgeon asked of them. We take instructions from the operating surgeon and we do not modify them.
For the Drop Burden and the Dry Eye That Follows
Weeks of antibiotic, steroid, and anti-inflammatory drops, often preserved, leave many eyes irritated and unstable. Conservative surface care here is low risk and welcome. We coordinate with the surgical team rather than adding anything to the eye on our own initiative in the early post-operative period.
While Vision Slowly Returns
Photoreceptor recovery takes months and distortion can persist. Patients often need reassurance, a temporary reading solution, advice about when to update glasses, and sometimes help with the imbalance between the two eyes. Supporting somebody through that period is legitimate work.
For Ongoing Surveillance of the Other Eye
Once the operated eye is stable, the fellow eye becomes the priority. We teach Amsler grid self-testing, set a review interval, and make it easy to be seen quickly if something changes. Early detection in the second eye is worth more than anything else we offer in this condition.
What We Will Not Do
We do not use kajal, surma, or any unregulated traditional eye preparation, and we do not permit home-made eye washes, decoctions, or oils to be instilled in the eye, least of all in an eye that has recently been operated on. Independent testing has repeatedly found lead, mercury, and arsenic in Ayurvedic products sold over the counter and online. We will not offer any therapy as an alternative to vitrectomy, we will not suggest delaying surgery to try something first, and we will not tell you that a macular hole can close without an operation when the realistic odds of that are low and the cost of waiting is permanent.
Treatment Options, Honestly Compared
Vitrectomy With Internal Limiting Membrane Peel and Gas Tamponade
This is the treatment. The surgeon removes the vitreous, stains and peels the internal limiting membrane around the fovea, and fills the eye with a gas that absorbs over days to weeks. Anatomical closure exceeds ninety percent in typical idiopathic holes, and most patients gain several lines of acuity. Netra Eye Institute does not perform vitrectomy; we refer to vitreoretinal surgeons and we do it promptly.
Technique Variations for Larger and More Difficult Holes
For large holes, chronic holes, and highly myopic eyes, surgeons use inverted or free internal limiting membrane flaps, extended peels, and other maneuvers. Comparative studies of flap techniques in small and medium holes and systematic review work on peel size suggest the added complexity earns its place mainly in the difficult cases rather than routinely. This is a decision for the operating surgeon, and reasonable surgeons differ.
Tamponade Choice: Air Versus Longer-Acting Gas
Short-acting air clears in days and allows earlier return to normal life and to air travel. Longer-acting gases such as sulfur hexafluoride or perfluoropropane persist for weeks and give a longer tamponade for larger holes. Comparative series in idiopathic holes with short positioning report broadly similar closure with air in suitable eyes. Your surgeon chooses based on hole size, lens status, and how reliably you can position.
Post-Operative Positioning
Face-down positioning was once mandatory for everyone. A Cochrane review of the randomized evidence concluded that strict face-down posturing may improve closure in large holes while the benefit in small holes is uncertain, which is why practice now varies and why many surgeons prescribe shorter or less strict regimens. Follow the instruction you were given rather than what a friend was told five years ago.
Observation and Ocriplasmin for Vitreomacular Traction
Where there is traction but no hole, options differ. Many cases release spontaneously and observation over a defined interval is appropriate. Intravitreal ocriplasmin can release focal adhesion in selected eyes, and imaging studies have identified the OCT features that predict release as well as the risk that a small hole enlarges afterward. Comparative work on intravitreal options in symptomatic focal traction shows the results are modest and patient selection is everything. Netra does not administer intravitreal agents.
Cataract Surgery and Visual Rehabilitation Afterward
Most phakic patients develop a visually significant cataract within a few years of vitrectomy, and registry data show high rates of subsequent lens surgery. Some surgeons combine the two operations from the start. After everything has settled, magnification, contrast enhancement, and updated glasses recover further function, particularly where distortion persists.
Building a Daily Plan Around Macular Hole Surgery and Recovery
Before Surgery: Secure the Date
The most valuable thing you can do in the next week is confirm a surgical date. Second opinions are reasonable, but a loop of consultations that adds two months to the duration of the hole costs more than it gains. If cost, insurance, or transport is the obstacle, say so early so it can be solved rather than quietly delaying things.
Position the Way Your Surgeon Asked, for as Long as They Asked
If face-down positioning is prescribed, set up for it properly: a rented support cushion, a mirror so you can watch television, short scheduled breaks, and somebody to bring meals. If your surgeon has prescribed a lighter regimen because your hole is small or you received air, follow that instead. The randomized evidence supports strict posturing mainly in larger holes, which is why the instruction differs between patients.
Do Not Fly, and Do Not Go to Altitude, While Gas Is in the Eye
This is not advice, it is a hard rule. A gas bubble expands as ambient pressure falls, and in a sealed eye that raises intraocular pressure to a level that can close off the retinal circulation and cause permanent blindness. Case reports and modeling work on altitude-related pressure rise after gas tamponade make the risk concrete. Commercial flights, mountain passes, and high-altitude drives all count. Ask your surgeon for the specific date the gas will have absorbed, and do not book anything before it.
Plan Sleeping, Eating, and Working Around the Bubble
Vision through a gas bubble is poor and strange, and it shifts as the bubble shrinks. Assume you will not read, drive, or work on a screen with that eye for some weeks. Arrange help at home and tell your employer early.
Take the Drops Exactly, and Manage the Surface
Antibiotic, steroid, and anti-inflammatory drops each have a schedule. Write it down, set alarms, and space different drops a few minutes apart. Preservative-free lubricants between doses reduce the stinging and surface irritation that make people give up on the regimen.
Protect and Monitor the Other Eye
Test each eye separately once a week with an Amsler grid or by looking at a doorframe or window frame with the other eye covered. New distortion in the fellow eye is a reason to be seen within days, not to wait for the next scheduled appointment.
Give Vision Time, and Ask for Help If It Stalls
Acuity improves over three to six months and sometimes longer, and distortion settles more slowly still. If you are several months out, the hole is closed, and reading is still difficult, ask for a refraction, a cataract assessment, and a low vision referral rather than assuming this is as good as it gets.
Red Flags That Need Urgent Care
Some of the following mean a new problem, and some mean a complication of surgery. All of them are reasons to contact an ophthalmologist the same day rather than waiting for a scheduled review.
- New distortion or a central blind spot in the unoperated eye, which may be a second macular hole forming
- A sudden shower of floaters, flashing lights, or a dark curtain in the periphery, which suggest a retinal tear or detachment
- Severe eye pain, a hard eye, nausea, or vomiting after surgery, which can indicate dangerously raised pressure
- Increasing redness, discharge, worsening pain, or vision that drops rather than improves in the first days after surgery, which can indicate infection inside the eye
- Any plan to fly, drive over a high pass, or travel to altitude while gas remains in the eye
- Sudden worsening of the central spot in an eye that had been improving after surgery, which may indicate the hole has reopened
- The gas bubble disappearing much sooner than your surgeon predicted, with vision worse rather than better
- Double vision or a new squint after surgery
- Any injury to the operated eye, however minor it seems
Delay is the theme running through this page. A hole left open for months still closes but sees far less well afterward, a late-treated retinal detachment does worse than an early one, and infection after surgery is an emergency measured in hours. When in doubt, be seen.
Frequently Asked Questions on Macular Hole
No. There is no evidence and no mechanism. A macular hole is a physical gap in retinal tissue held open by traction and fluid, and it is closed by removing the vitreous, peeling the internal limiting membrane, and filling the eye with gas. No herb, oil, drop, diet, or eye exercise does any part of that. Anyone offering an Ayurvedic cure for a macular hole is asking you to trade recoverable vision for something that cannot work.
The hole will usually still close after a long delay, but the vision you regain steadily declines the longer it has been open. Pooled analysis of randomized trial participants shows worse final acuity with longer symptom duration across the whole range, not just in very old holes. Treat it as weeks rather than months. Waiting four months for a convenient date has a visual cost.
It depends on your hole and your tamponade. Systematic review of the randomized evidence suggests strict face-down posturing helps most in large holes, while the benefit in small holes is uncertain, and many surgeons now prescribe shorter or lighter regimens. What matters is following the instruction you were personally given, because your surgeon knows the size of your hole and which gas is in your eye.
Not until the gas has completely absorbed and your surgeon has confirmed it. Falling cabin pressure expands the bubble and can raise pressure inside the eye enough to cut off blood supply to the retina, which has caused permanent blindness. The same applies to mountain roads and high-altitude destinations. Air clears in days, sulfur hexafluoride in roughly two weeks, and perfluoropropane can take two months. Get the date from the person who operated on you.
No, and the difference matters. A lamellar hole is a partial-thickness defect, and a macular pseudohole is a contour change caused by an epiretinal membrane rather than a true defect. Both are defined on optical coherence tomography by published consensus criteria, both usually keep reasonable vision, and both are generally watched rather than operated. If you have been told you need urgent surgery for a lamellar hole, ask for the OCT to be reviewed again.
Selected References for Scientific Support
- Li JQ, Hattenbach LO, Lommatzsch A, et al. Macular hole: differential diagnosis, treatment options and new guideline recommendations. Ophthalmologie. 2024. PubMed
- Murphy DC, Al-Zubaidy M, Lois N, et al. The Effect of Macular Hole Duration on Surgical Outcomes: An Individual Participant Data Study of Randomized Controlled Trials. Ophthalmology. 2023. PubMed
- Teh BL, Li Y, Nanji K, et al. Internal limiting membrane peel size and macular hole surgery outcome: a systematic review and individual participant data study of randomized controlled trials. Eye (Lond). 2025. PubMed
- Aizouki C, Qiu W, Loh GK, et al. Surgical outcomes of small and medium macular holes with or without use of internal limiting membrane flaps. Can J Ophthalmol. 2025. PubMed
- Timoceanu L, Lang C, Tschuppert S, et al. Short-term visual acuity responder rates after full-thickness macular hole surgery stratified by hole size: a retrospective cohort study. BMC Ophthalmol. 2026. PubMed
- Liu T, Abreu-Arbaje NA, Andoh J, et al. Surgical management and outcomes of large high myopic macular holes: Global Macular Hole Multicenter Study 3. Retina. 2026. PubMed
- Cundy O, Lange CA, Bunce C, et al. Face-down positioning or posturing after macular hole surgery. Cochrane Database Syst Rev. 2023. PubMed
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- Teng R, Luo J, Zhao P, et al. Altitude-Specific IOP Risks After Vitrectomy With Gas Tamponade: Modeling and Travel Guidance Based on Calculated Elevation Profiles. Am J Ophthalmol. 2026. PubMed
- Gandorfer A, Kampik A. Expansion of intraocular gas due to reduced atmospheric pressure: case report and review of the literature. Ophthalmologe. 2000. PubMed
- Loh GK, Martens RK, Tennant MTS, et al. Outcomes of vitrectomy with or without internal limiting membrane peeling for the treatment of vitreomacular traction. Can J Ophthalmol. 2026. PubMed
- Metzger D, Assaf A, Maier MM, et al. Risk factors and efficacy of different intravitreal treatment options for symptomatic focal vitreomacular traction with or without full-thickness macular hole. Int Ophthalmol. 2025. PubMed
- Johannigmann-Malek N, Iannetta D, Zheng Y, et al. Optical coherence tomography features associated with vitreomacular traction release and macular hole size progression following treatment with ocriplasmin. Retina. 2024. PubMed
- Hubschman JP, Govetto A, Spaide RF, et al. Optical coherence tomography-based consensus definition for lamellar macular hole. Br J Ophthalmol. 2020. PubMed
- Wang JC, Khurana RN, Liu L, et al. Cataract Progression and Risk Factors for Cataract Surgery after Pars Plana Vitrectomy in Phakic Eyes: An IRIS Registry Analysis. Ophthalmol Retina. 2026. PubMed
- Liew G, Nguyen H, Ho IV, et al. Prevalence of Vitreoretinal Interface Disorders in an Australian Population: The Blue Mountains Eye Study. Ophthalmol Sci. 2021. PubMed
- Timmapur GM, Fiaz S. Efficacy of Triphala Ghrita and Goghrita Manda Tarpana in the management of Shushkakshipaka w.s.r. to dry eye syndrome: An open labelled randomized comparative clinical trial. Ayu. 2020. PubMed
- Saper RB, Phillips RS, Sehgal A, et al. Lead, mercury, and arsenic in US- and Indian-manufactured Ayurvedic medicines sold via the Internet. JAMA. 2008. PubMed
- Mukhopadhyay S, Abraham SE, Holla B, et al. Heavy Metals in Indian Traditional Systems of Medicine: A Systematic Scoping Review and Recommendations for Integrative Medicine Practice. J Altern Complement Med. 2021. PubMed