Pinguecula is a form of lesion on the attention – identical to the pterygium. The 2 problems are so related that they’re typically confused.

A pinguecula (plural, pingueculae) is a thick floor lesion alongside the sclera (the white space) of the attention close to its borders with the cornea. The lesion is barely raised and white to yellow in shade. The pinguecula normally begins within the palpebral fissure (the realm between the higher and decrease eyelids). It seems extra opaque than the wholesome conjunctiva (the mucous membrane protecting the interior floor of the eyelid and the white of the attention), has an oily look, and is extra more likely to be situated on the aspect of the nostril (somewhat than the ear) of the attention.

Pterygium (plural, pterygium) is a triangular, wing-shaped lesion that truly invades the cornea, normally close to the nostril and within the space steady with the conjunctiva. It may be detected by its head – a raised, creamy, opaque tissue on the cornea. Though not often threatening the eyesight, extreme pterygium can inflict corneal blindness.

The 2 lesions are related in cell / tissue constructions. A pinguecula is distinguished from a pterygium by its place relative to the cornea and the horizontal orientation of its broken tissue. Nonetheless, a pinguecula can flip right into a pterygium when it passes by the cornea.

The causes

The causes of pinguecula and pterygium are usually not clearly established. There may be, nonetheless, sturdy proof that each situations are strongly related to repeated and long-term publicity to the blue and ultraviolet bands of the sunshine spectrum. It’s no coincidence that they’re most definitely situated across the cusp of the cornea, which is the half most uncovered to the solar. The cornea and conjunctiva undergo from mobile harm because of publicity to ultraviolet rays, particularly when the shops of the helpful antioxidants, glutathione and astaxanthin, are diminished.

Pinguecula can also be related to elevated age. Pingueculae have developed in most eyes by age 70 and in nearly all eyes by age 80. That is most definitely a consequence of the progressive deterioration of the conjunctiva, ensuing from growing old, previous irritation, continual irritation and dryness of the eyes.

Pterygium has been inextricably related to sufferers dwelling at latitudes 37 levels north and south of the equator – which seems to strengthen the affiliation with UV publicity. Hereditary influences have additionally been described. One other trigger is an infection with the human papillomavirus.

Much like the pinguecula, the pinguecula is suspected to develop from a relentless presence of mud, low humidity (which may trigger fast evaporation of tears and dry eyes), and tiny harm from particles within the air resembling smoke and sand. Signs of dry eye may also be complicated.

Though pterygium is commonly regarded as a deeply rooted degenerative illness, a few of its indicative options level to an irregular progress dysfunction – very like some benign tumors. After surgical procedure, the pterygia exhibited a strong and invasive propensity to recur.


Pingueculae don’t usually trigger issues. You might really feel a international physique sensation from an infected pinguecula. Very dry situations and different environmental components may cause irritation and hypertrophy.

You’ll normally not expertise any signs of pterygium. However an enlarged and irritated pterygia may cause a international physique sensation and beauty apprehensions concerning the look of your eyes. A swollen or extra developed pterygia, nonetheless, can result in astigmatism, as the expansion places strain in your cornea.


Swelling from pingueculitis (referred to as pingueculitis) may be very receptive to remedy with nonsteroidal anti-inflammatory medicine or, if vital, topical corticosteroids. The accompanying dry eye signs could be handled with eye drops. For those who intend to go outdoors, will probably be prudent to guard your eyes from the solar with a great pair of sun shades. Surgical elimination of a pinguecula isn’t vital.

A small however swollen pterygium could be handled with corticosteroid drops to suppress the irritation. Dry eyes could be relieved with prescription eye drops.

Massive pterygia could be higher neutralized by surgical excision. The resection process is simple, however stopping re-emergence isn’t straightforward. As a consequence of its aggressive tendency to regenerate, your physician’s remedy technique could resemble anti-cancer methods, resembling large surgical elimination to uproot any tissue doubtlessly affected by pterygium, beta radiation remedy, and chemotherapy. with mitomycin C, an anticancer compound.


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