During an examination, your patient denies pain or loss of vision when you question him about the triangular lesion on the nasal side of the bulbar conjunctiva extending over the medial portion of his cornea. This is most likely a
a. corneal ulceration. c. pinguecula.
b. hordeolum. d. pterygium.
D
A pterygium is a thick triangular piece of pale tissue on the nasal side of the bulbar conjunctiva extending over the medial portion of the cornea. It is caused by excessive exposure to the sun. A corneal ulceration is a grayish, well-circumscribed, ulcerated area on the cornea with injection and purulent material in the anterior chamber. A hordeolum is a localized staphylococcal infection of the hair follicles at the lid margin. It is tender, red, and inflamed. The patient complains of pruritus. Pinguecula are yellow nodules on the nasal or temporal side of the bulbar conjunctiva adjacent to the cornea from prolonged exposure to sun, wind, and dust.
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