Pinguecula

A pinguecula (pronounced "pin-GWEK-you-lah") is a small, yellowish, slightly raised deposit of protein, fat, and calcium on the conjunctiva — the clear membrane covering the white of the eye. It is one of the most common eye findings in adults, caused primarily by chronic ultraviolet (UV) light exposure. Pingueculae are benign and rarely require treatment.

Pinguecula vs. Pterygium

Feature	Pinguecula	Pterygium
Appearance	Yellow/white raised bump	Fleshy, wedge-shaped growth
Location	On conjunctiva only	Extends from conjunctiva onto cornea
Growth pattern	Stays on the white of the eye	Can grow across the cornea
Vision effect	Rarely affects vision	Can cause astigmatism, block vision
Treatment	Rarely needed	Surgery sometimes needed

A pinguecula can occasionally progress to a pterygium, though this is uncommon.

Symptoms

Most People Have No Symptoms

Pingueculae are often noticed incidentally during an eye exam or when looking in a mirror.

When Symptoms Occur

• Visible yellowish bump on the white of the eye (usually on the nasal side, between the eyelid opening)
• Mild irritation or dryness in the area
• Foreign body sensation — feeling like something is in the eye
• Cosmetic concern

Pingueculitis

When a pinguecula becomes inflamed (pingueculitis):

• Redness surrounding the bump
• Swelling of the pinguecula
• Burning or stinging
• Increased irritation
• Triggered by wind, dust, dry air, or contact lens wear

Causes and Risk Factors

How Pingueculae Form

Chronic exposure to UV radiation, wind, and dust causes degenerative changes in the conjunctival tissue — specifically, the collagen fibers become altered (elastotic degeneration) and deposits of protein, fat, and calcium accumulate.

Risk Factors

• Chronic UV light exposure — the primary cause
• Outdoor occupations — farming, construction, fishing
• Dry, dusty, or windy environments
• Not wearing sunglasses regularly
• Age — more common with increasing age (though can appear in younger adults with significant sun exposure)
• Living near the equator

Diagnosis

• Slit-lamp examination — confirms the characteristic appearance and location
• No special testing is needed — diagnosis is clinical
• Your eye doctor will distinguish it from a pterygium, conjunctival cyst, or other growths

Treatment

Most Pingueculae Need No Treatment

Since they are benign and rarely cause problems, most pingueculae are simply observed.

For Mild Irritation

• Artificial tears — lubricating drops reduce dryness and irritation
• UV protection — sunglasses to prevent worsening

For Pingueculitis (Inflammation)

• Short course of mild steroid or NSAID drops — reduces inflammation and discomfort
• Cold compresses — for comfort
• Avoid triggers — wind, dust, dry conditions
• Episodes typically resolve within 1-2 weeks with treatment

Surgical Removal (Rare)

Surgery is rarely needed and only considered if:

• The pinguecula is chronically inflamed despite treatment
• Significant cosmetic concern
• Interfering with contact lens wear
• Very large and causing persistent foreign body sensation

Removal is straightforward but recurrence is possible, especially with continued UV exposure.

Prevention

• Wear UV-blocking sunglasses outdoors — wraparound styles provide the best coverage
• Wear a wide-brimmed hat for additional protection
• Use artificial tears in dry or windy conditions
• Avoid unnecessary sun exposure

When to See a Doctor

Frequently Asked Questions

Is a pinguecula dangerous?

No. A pinguecula is a benign growth and is not cancerous or dangerous. It does not threaten your vision. It is essentially a cosmetic finding in most cases.

Will it go away on its own?

No. Once formed, a pinguecula does not go away on its own. However, it rarely grows or causes problems. UV protection can prevent it from worsening.

Can a pinguecula turn into cancer?

No. Pingueculae are benign and do not become cancerous. However, other growths on the eye surface can occasionally be concerning. Your eye doctor can distinguish between them.

Should I be worried about the yellow color?

No. The yellowish color is from protein and fat deposits in the tissue — it is a normal feature of a pinguecula and not a sign of a serious problem.

Can I wear contact lenses with a pinguecula?

Usually yes. However, a raised pinguecula may cause the edge of a contact lens to lift, leading to discomfort or dryness. Your eye care provider can help with lens selection and fit.

References