Case Studies
ERG Raises Red Flag, Changing Management Trajectory
Focus on Retinitis Pigmentosa
A complaint of difficulty driving at night is not uncommon for an optometrist to hear, but when one patient mentioned this during his routine exam, his visual acuity of 20/20 signaled Dr. Frances Bynum, OD, FAAO, to look further.
ERG Provides Confidence to Monitor or Treat
Focus on Glaucoma
Explore how Dr. Nate Lighthizer treated a patient who was diagnosed with glaucoma five years prior and referred to his clinic for additional testing.
ERG to Determine Ischemic Status
Focus on Retinal Vein Occulsion
Explore how Dr. Nate Lighthizer treated a 50-year-old female patient who initially presented for punctal plugs. Although she wasn’t scheduled for a retinal evaluation, a resident noticed reduced vision in her left eye.
ERG to Replace FA for CRVO Treatment Decision
Focus on Central Retinal Vein Occlusion
Dr. Miho Nozaki demonstrates the value of RETeval ERG for diagnosing CRVO in complex cases, where conventional testing poses risks.
Using ERG to Monitor Glaucoma
Focus on Glaucoma
Explore the use of Electroretinography (ERG) in managing Glaucoma through a case study by Dr. Edith Rom, Germany.
ERG Alters Follow-up Schedule and Education for Patient with Diabetes
Focus on Diabetic Retinopathy
A 33-year-old Native American female presented because she lost her glasses a year prior. From a visual standpoint, she was doing well. She didn’t report any changes in her vision and was corrected to 20/20 in both eyes (-1.25 OD, -1.00 OS). Her last A1c was 10.0, which is certainly higher than we would like to see.
Using ERG for Management of Birdshot Chorioretinopathy
Focus on Retinal Inflammation
Explore the use of Electroretinography (ERG) in managing Birdshot Chorioretinopathy through a detailed case study by Prof. Paulo Eduardo Stanga and team at The Retina Clinic London. This study examines a 62-year-old patient’s journey from initial diagnosis to advanced treatment, including intravitreal therapy and immunosuppressive therapy.
Comprehensive Pediatric Assessment Using ERG in Challenging Cases
Focus on Inherited Retinal Degenerations
Learn how Dr. Mario Zanolli utilized ERG to assess a 4-year-old boy with nystagmus when standard imaging techniques proved challenging. This case study demonstrates the effectiveness of ERG in pediatric cases where traditional methods may not provide clear results.
Routine ERG Use Supports Patient Management
Focus on Optic Neuritis
An established patient presented for a comprehensive exam in 2023. This 70-year-old white female had a family history of diabetes, hypertension and cancer. She was also positive for multiple sclerosis, thyroid dysfunction and high cholesterol. More than ten years ago, she had an episode of optic neuritis in her left eye. Interestingly, relative to her multiple sclerosis, she says she was told that she no longer needed treatment, nor did she need to be seen by neurology. This concerned us given what the Optic Neuritis Treatment Trial (ONTT) tells us about the high likelihood of recurrence in optic neuritis in patients with a history of diagnosis of multiple sclerosis.
ERG Above and Beyond Retinal Imaging
Focus on Inherited Retinal Degenerations
A 7-year-old child was referred to confirm a multiple sclerosis (MS) diagnosis following a brain scan. The patient complained of visual changes but identifying the cause was complex due to limited patient cooperation. We obtained color fundus and OCT images, both of which appeared to be normal. A flash visual evoked potential (VEP) test was conducted at another clinical site, but the outcome was unreadable.
ERG’s Role in Diabetic Retinopathy Progression Monitoring
Focus on Diabetic Retinopathy
Explore how Dr. Pamela Weber used the RETeval ERG/VEP to monitor the progression of diabetic retinopathy in a 39-year-old patient with type 1 diabetes. The case study shows how early detection and monitoring with advanced retinal imaging can lead to timely and more aggressive treatment, improving patient outcomes.
Avaliação de Risco para CRVO baseado em ERG
Focus on Central Retinal Vein Occlusion
This case study involves an 87-year-old female patient sought medical attention due to gradual vision loss. She presented with a two-month history of blurred vision OD, a dense cataract and 20/200 best corrected visual acuity (BCVA).
ERG Supports Diagnostic Accuracy in a Pediatric Patient
Focus on Myopia
This case study involving a 3-year-old boy with bilateral high myopia (-6.25D and -7.00D), normal structural results, and no extraocular features demonstrates how ERG addresses these challenges.