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


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


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


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


Retinitis Pigmentosa: Symptoms, Causes, Diagnosis, and Treatment
Retinitis pigmentosa is a group of inherited retinal diseases that can gradually affect night vision, peripheral vision, and eventually central vision. Learn the common symptoms, how RP is diagnosed, available treatments, and why genetic testing and regular eye exams are important.

David B. Sabin
Sep 158 min read


FSA and HSA: How to Use Your Benefits for Eye Care
Have FSA or HSA funds available? Learn how you may be able to use them for eye exams, prescription glasses, contact lenses, prescription sunglasses, and medical eye care.

David B. Sabin
Sep 24 min read


Ehlers-Danlos Syndrome and Your Eyes: What Patients Should Know
Ehlers-Danlos syndrome affects connective tissue throughout the body, including parts of the eye. Here’s what patients should know about vision changes, dry eye, corneal problems, and warning signs.

David B. Sabin
Sep 14 min read


Guillain-Barré Syndrome and the Eyes: Why Vision Changes Can Happen
Guillain-Barré syndrome is a rare nerve condition that can affect more than the arms and legs. In some patients, it can cause double vision, droopy eyelids, trouble moving the eyes, and dry eye from poor blinking. Here’s what patients should know about the eye-related warning signs.

David B. Sabin
Aug 314 min read


Blog 2: Doctor-Focused Clinical Version: Pituitary Tumors: A Clinical Guide for Eye Doctors
Pituitary tumors are common and usually benign, but macroadenomas can compress the optic chiasm and cause bitemporal visual field loss. This clinical guide reviews eye findings, testing, referral signs, and management considerations

David B. Sabin
Aug 284 min read


Blog 1: Patient-Friendly Version: Pituitary Tumors and Your Eyes: What Patients Should Know
Pituitary tumors are usually benign, but they can affect side vision when they press on the optic nerves. Learn the symptoms, how common they are, and why an eye exam can help detect early warning signs.

David B. Sabin
Aug 273 min read
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813-843-2653
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