Leo Semes

What's Your Diagnosis?

Editor Leo P. Semes, OD, solicits authors with actual cases challenging readers to make the diagnosis based on clinical findings.

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October 02, 2023
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Patient complains of large, dark spot in vision of right eye

An 80-year-old white male presented to the eye clinic for a recent-onset visual disturbance. The patient reported that there was a large, black spot in the central vision of his right eye. He first noticed the dark spot the previous day and described his vision as being blurry. He denied any ocular pain or new onset of flashes or floaters.

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September 14, 2021
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Patient presents with unilateral vision loss, ptosis, pain

A 37-year-old Native American man presented at the hospital complaining of painful left eye with vision loss and a drooping eyelid for the past 2 days.

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August 25, 2021
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Middle-aged man has sudden-onset bilateral central scotomas

A 55-year-old white man presented with the complaint of sudden onset central scotoma in both eyes for 1 month. The patient reported the condition slightly improved from the initial onset.

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January 28, 2021
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Asymptomatic patient has hypopigmented spots in the retina

A 59-year-old man was referred to our clinic for evaluation of multiple hypopigmented spots within the peripheral retina in both eyes. The patient was asymptomatic with no complaints of vision loss, floaters, pain or discomfort.

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December 28, 2020
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Middle-aged man reports new onset diplopia

A 40-year-old African-American male patient presented to our clinic for his first eye exam with a complaint of new onset horizontal diplopia for several days. He reported it was worse at distance and when looking to his left. He denied trauma, headache, redness or vision changes in either eye.

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August 05, 2020
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Routine exam reveals macular lesion

A 26-year-old white female presented for a comprehensive eye examination. No visual or ocular complaints were reported. The patient described good vision with her current spectacles. She mentioned that previous eye care practitioners told her that she had “macular degeneration” in her right eye.

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April 03, 2020
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Routine exam reveals unusual retinal findings

A 70-year-old Caucasian man presented for an updated spectacle prescription. Ocular history included cataracts, monovision RK performed in 1997 and “damage to the back of my right eye.” Medically, the patient reported only a history of prostate cancer 11 years prior, for which he received treatment. Medications included a multivitamin. He denied any current or past use of tobacco, alcohol or recreational drugs.

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January 27, 2020
6 min read
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Visual disturbance with undiagnosed etiology

A 20-year-old woman presented for a neuro-optometric exam with complaints of headaches, asthenopia, occasional diplopia, extreme light sensitivity, dizziness and loss of balance. She reported her symptoms started about 2 years ago with day-to-day fluctuations in her symptoms.

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December 16, 2019
4 min read
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Routine eye exam reveals distinctive macular lesion

A 36-year-old Caucasian male presented with a chief complaint of mild blur in the left eye at distance and near that improved to 20/20 with spectacle correction. The patient’s medical and ocular histories were unremarkable without ocular trauma. He denied taking any medications.

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October 15, 2019
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Patient with diabetes has reduced vision

A 63-year-old Native American female was referred to the electrodiagnostics clinic for an OCT, ERG and visual-evoked potential, if needed, due to the patient’s unexplained decreased vision. She was best corrected to 20/50 OD, OS.