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OPT-ISM Eye Care Blog
Helpful eye care tips, vision education, and modern optometry insights from OPTISM in Tampa, FL.


Retina to the Visual Cortex: 10 Question Multiple Choice
Vision is more than light entering the eye. It is a coordinated process that begins with image formation, continues through phototransduction and retinal signal processing, and ends with interpretation in the visual cortex. This clinician-friendly guide reviews how the cornea and lens focus light onto the retina, how rods and cones convert photons into neural signals, how inner retinal circuitry refines the message, and how the optic nerve, chiasm, LGN, optic radiations, and

David B. Sabin
3 days ago3 min read
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Mid-Peripheral Retinal Hemorrhages: A Warning Sign of Carotid Artery Disease and Ocular Ischemic Syndrome
Isolated mid-peripheral retinal hemorrhages are an important retinal clue to ocular ischemic syndrome and severe carotid artery disease. This clinician-focused review explains the characteristic fundus findings, how to differentiate OIS from retinal vein occlusions and diabetic retinopathy, and why prompt carotid evaluation can preserve vision and reduce stroke risk.

David B. Sabin
Sep 225 min read
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Retinitis Pigmentosa: An Optometrist’s Guide to OCT, FAF, ERG, Visual Fields, Genetics, and Referral
Retinitis pigmentosa is a genetically diverse group of rod-cone dystrophies that requires more than recognition of classic bone-spicule pigmentation. This clinical guide reviews OCT, fundus autofluorescence, visual fields, ERG, genetic testing, treatable complications, referral considerations, and practical follow-up for optometrists.

David B. Sabin
Sep 2111 min read
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Eye Coloboma: A Clinician-Level Guide to Embryology, OCT Findings, Retinal Detachment Risk, and Management
Ocular coloboma results from incomplete closure of the embryonic fissure, classically producing inferior or inferonasal defects involving the iris, lens zonules, chorioretina, optic nerve, or multiple ocular structures. Clinical evaluation should distinguish typical uveal coloboma from atypical coloboma-like lesions, assess macular and optic nerve involvement, document OCT findings, and monitor for complications such as amblyopia, choroidal neovascularization, and retinal det

David B. Sabin
Aug 119 min read
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Eye Coloboma: What It Is, How It Affects Vision, and When to See an Eye Doctor
Eye coloboma is a condition present at birth where part of the eye does not fully form. It can affect the iris, retina, optic nerve, lens, or eyelid, and its impact on vision depends on which part of the eye is involved. Some people with coloboma see very well, while others may need glasses, specialty lenses, retinal monitoring, or support for reduced vision. A comprehensive eye exam helps determine whether the coloboma is mostly cosmetic, visually significant, or needs long-

David B. Sabin
Aug 75 min read
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How OCT Helps Evaluate the Retina, Macula, Optic Nerve, Glaucoma, Diabetes, and Plaquenil Monitoring
OCT is a quick, painless imaging test that helps your eye doctor evaluate the retina, macula, optic nerve, glaucoma, diabetic eye disease, and Plaquenil-related retinal changes.

David B. Sabin
Jun 25 min read
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Diabetic Eye Exams: The Importance of Regular for Maintaining Eye Health in Tampa
Diabetes can affect the eyes before vision changes are noticeable. Learn why regular diabetic eye exams and retinal imaging are important for protecting long-term vision.

David B. Sabin
Apr 304 min read
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Why a Comprehensive Eye Exam Is More Than Just a Glasses Prescription.
A comprehensive eye exam does more than update your glasses prescription. Learn how OPTISM in Tampa checks vision, retina health, diabetes, glaucoma, macular degeneration, contact lenses, and more.

David B. Sabin
Apr 285 min read
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Choosing the Right South Tampa Optometrist
Choosing the Right South Tampa Optometrist

David B. Sabin
Apr 275 min read
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Comprehensive Eye Exam Tampa: Why It Matters Even If You See Clearly
A comprehensive eye exam does more than check your glasses prescription. Learn how OPTISM in Tampa uses retinal imaging, glaucoma screening, contact lens evaluations, and medical eye care to help protect your long-term vision.

David B. Sabin
Apr 273 min read
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3825 Henderson Blvd, Suite 103, Tampa, FL 33629
813-843-2653
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