History   
A 59-year-old black male presented for a routine eye examination. His chief complaint was that he wanted an updated spectacle prescription.

He had no other ocular complaints. His systemic history was unremarkable. He had no established ocular history, and reported no allergies.

Diagnostic Data
His best-corrected visual acuity measured 20/20 O.U. at distance and near. The external examination was normal, and there was no evidence of afferent pupillary defect.

Upon visually inspecting the individual’s eyes without a biomicroscope, a small, dense, white lesion located in the inferior portion of the left cornea was noted. Using the biomicroscope, the lesion was closely inspected. There was no indication of iritis, keratic precipitate or iris synechiae O.S.

The anterior segment examination of the right eye was normal. His intraocular pressure measured 14mm Hg O.U. The dilated fundus findings were unremarkable O.U.

Your Diagnosis
How would you approach this case? Does this patient require any additional tests? What is your diagnosis? How would you manage this patient? What’s the likely prognosis?


Biomicroscopy image of our 59-year-old patient who wanted a new spectacle prescription. What do you notice?
Discussion
Additional testing included a more extensive patient history. He had no explanation for the lesion and could not recall any specific incident at home or work when this might have happened. Other testing might include sodium fluorescein staining; lesion probing to rule out foreign matter; Seidel testing to rule full-thickness penetration; aqueous inspection to rule out penetrating foreign body; iris inspection for “peaked” pupil (indicative of iris penetration); lens inspection, vitreous inspection and retinal inspection to rule out a foreign body insult.

The diagnosis in this case is corneal laceration of the left eye. The corneal flap appeared white because it was necrotic. So, we removed it with a curved scissor under the guidance of a corneal specialist. The lesion was probed for foreign debris and the wound was lavaged. Both eyelids were everted to rule out the presence of any foreign material or evidence of previous episodes, and a topical antibiotic was instilled in the office.

The patient was appropriately cyclopleged and placed on a topical 4th generation fluoroquinolone q.i.d. and a topical nonsteroidal anti-inflammatory preparation q.i.d. O.S.1-11 Because the patient was not in distress, topical lubricants were used q.i.d. in combination with oral analgesics for pain (as needed). We determined that a pressure patch or bandage contact lens was not necessary.8,12 We scheduled the patient for follow-up in 24 hours.4

After one week, we added a topical steroid q.i.d. to quiet corneal and scleral inflammation as well as reduce the risk of scar formation.13 The patient returned periodically during the next three weeks and exhibited an uncomplicated healing course. 

While there was some corneal opacity present with a mild indentation at the site of the injury (fluorescein pooling, not staining), the epithelium filled in nicely and there was no residual effect on his vision.

At the final follow-up visit, we refracted him and updated his spectacle prescription. We also asked the patient to continue using sodium chloride ointment at bedtime O.S. for one month to reduce his risk of recurrent corneal erosion.14-16

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