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


OPT-ISM Weekly Quiz: What Is Amblyopia and Why Early Treatment Matters?
Test your knowledge of the different types of amblyopia with this 6-question quiz covering refractive, strabismic, deprivation, mixed-mechanism, and reverse amblyopia, plus common treatment approaches.

David B. Sabin
1 day ago4 min read


Photorefractive keratectomy (PRK) Eye Surgery: A Flap-Free Alternative to LASIK
PRK offers laser vision correction without creating a corneal flap. Although healing takes longer than LASIK, it may be preferred for certain corneas, occupations, and active lifestyles.

David B. Sabin
2 days ago3 min read


Giant Cell Arteritis: The Headache That Can Threaten Your Vision
Giant cell arteritis, also called temporal arteritis, is a serious inflammatory condition that can cause headaches, jaw pain, scalp tenderness, and sudden vision loss. Learn the warning signs and why early treatment is critical.

David B. Sabin
3 days ago4 min read


Pigment Epithelial Detachment vs. Central Serous Retinopathy: What’s the Difference?
A pigment epithelial detachment, or PED, is a finding on retinal imaging, while central serous retinopathy is a disease process that can cause fluid under the retina. Here’s how they compare.

David B. Sabin
4 days ago5 min read


Central Serous Retinopathy and Type A Personalities: Can Stress Affect Your Retina?
Central serous retinopathy occurs when fluid builds up under the retina, often causing blurry or distorted central vision. Learn how stress, cortisol, steroid use, and Type A personality traits may contribute to this condition.

David B. Sabin
5 days ago4 min read


10-Question Multiple Choice Quiz: Super Glue in the Eye
Super glue in the eye can cause the eyelids or lashes to stick together and may scratch the cornea. Patients should avoid forcing the eye open, avoid acetone or household solvents, rinse gently if possible, and seek prompt eye care.

David B. Sabin
Oct 93 min read


Radial Keratotomy: The Early Refractive Surgery That Came Before LASIK
Before LASIK, radial keratotomy used spoke-like corneal incisions to reduce nearsightedness. Although many patients initially achieved clearer distance vision, RK can cause prescription changes, irregular astigmatism, glare, and fluctuating vision decades later.

David B. Sabin
Oct 87 min read


Epiretinal Membrane: Why Straight Lines Can Look Wavy
An epiretinal membrane, also called a macular pucker, is a thin layer of scar-like tissue that forms over the macula and can cause blurry or distorted central vision. Learn how eye doctors detect it, monitor it, and when treatment may be needed.

David B. Sabin
Oct 74 min read


Multiple Sclerosis and Your Eyes: Early Signs, Vision Changes, and Eye Tracking Problems
Multiple sclerosis can affect the eyes by causing optic neuritis, double vision, shaky vision, poor eye tracking, and trouble with color or contrast. Learn the early signs and when to schedule an eye exam.

David B. Sabin
Oct 66 min read


Pyogenic Granuloma of the Eye: Causes, Symptoms, Diagnosis, and Treatment
A rapidly growing red bump on your eye may be a pyogenic granuloma. Discover why these benign vascular growths develop, how eye doctors diagnose them, and which treatments can help.

David B. Sabin
Oct 58 min read


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
Oct 23 min read


Can Overwearing Contact Lenses Cause Problems with LASIK Surgery?
Thinking about LASIK but still wearing contact lenses every day? Overwearing contacts can temporarily distort the cornea, worsen dry eye, and make LASIK measurements less reliable. Before moving forward with laser vision correction, your eye doctor needs to make sure your cornea is clear, healthy, and stable.

David B. Sabin
Oct 16 min read


Different Color Lens Tints: Which Tint Is Best for Driving, Sports, Screens, and Everyday Wear?
Different lens tint colors can improve comfort, reduce glare, and enhance contrast for specific activities like driving, golf, fishing, sports, and computer work. Here’s how to choose the best tint for your lifestyle

David B. Sabin
Sep 306 min read


Blowout Fracture Clinical Cheat Sheet
A quick-reference guide for optometrists covering orbital blowout fracture symptoms, trauma exam essentials, entrapment warning signs, CT findings, red flags, and urgent referral decisions.

David B. Sabin
Sep 294 min read


Orbital Blowout Fractures: What Optometrists Need to Know
A practical guide for optometrists on recognizing orbital blowout fractures, evaluating diplopia and motility restriction, identifying entrapment and emergency red flags, and knowing when urgent referral is needed.

David B. Sabin
Sep 2810 min read


Pachymetry: Why Corneal Thickness Matters in Glaucoma and Eye Care
Pachymetry is a quick, painless test that measures corneal thickness. It plays an important role in glaucoma risk assessment and eye-pressure interpretation, while also helping evaluate keratoconus, corneal swelling, and refractive surgery candidates.

David B. Sabin
Sep 243 min read


Gonioscopy: How We Measure the Eye’s Drainage Angles and Assess Glaucoma Risk
Gonioscopy allows your eye doctor to examine and measure the eye’s drainage angles. Learn how the test identifies narrow or closed angles, evaluates glaucoma risk, and reveals important angle structures.

David B. Sabin
Sep 233 min read


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


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


Anterior Uveitis: 5-Question Multiple Choice Quiz
Anterior uveitis is more than a painful red eye. This clinical guide reviews symptoms, slit-lamp findings, anterior chamber cell detection, red flags, systemic associations, and referral considerations for eye care providers.

David B. Sabin
Sep 182 min read
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813-843-2653
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