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


Eye Allergies: Why Your Eyes Itch and Water
Itchy, watery, red eyes are often caused by eye allergies, but dry eye and contact lens irritation can look very similar. Here’s how to tell the difference and when to schedule an eye exam
David B. Sabin
58 minutes ago4 min read


Back-to-School Eye Exams: Why Vision Should Be on Your Checklist
A new backpack, school supplies, and updated clothes may be on your child’s back-to-school list—but what about their vision? Clear, comfortable eyesight can make a big difference in reading, learning, confidence, and classroom performance.
David B. Sabin
1 day ago6 min read


Kids and Contact Lenses: When Is the Right Time to Start?
Is your child ready for contact lenses? Many kids start around age 12, but some may be ready earlier depending on their eye health, maturity, hygiene, and lifestyle needs.
David B. Sabin
2 days ago3 min read


Overview From the Retina to the Visual Cortex
Vision feels instant, but it is actually a highly organized neurologic process. Light enters the eye, is focused onto the retina, converted into electrical signals, refined by retinal circuitry, and then transmitted through the optic nerve and visual pathway to the visual cortex.
David B. Sabin
4 days ago7 min read


A Clinical Guide to the Visual Pathway to the Cortex: How the Eye Maps Vision to the Brain
The visual pathway is one of the most powerful localization tools in eye care and neuro-ophthalmology. By understanding how retinal fibers cross, relay, and map to the cortex, clinicians can use visual field patterns to help identify where a lesion may be located.
David B. Sabin
5 days ago8 min read


A Clinical Guide to the Neurosensory Retina: How the Eye Converts Light Into Vision
The retina is more than a camera film. It is neural tissue that captures light, processes visual information, and sends signals to the brain. Understanding the neurosensory retina helps explain how eye doctors detect disease using OCT, retinal imaging, and visual field testing.
David B. Sabin
6 days ago8 min read


A Clinical Guide to How We See: Image Formation and the Visual Pathway
Vision begins with optical image formation at the retina, but clinically meaningful vision depends on phototransduction, retinal processing, retinotopic organization, optic nerve integrity, chiasmal crossing, LGN relay, optic radiations, and cortical interpretation.
David B. Sabin
Jul 76 min read


How We See: A Simple Guide to How the Eye Forms an Image
Seeing feels instant, but your eyes and brain work together in a precise step-by-step process. Here is a simple guide to how light becomes vision.
David B. Sabin
Jul 64 min read


How to Choose the Best Frame Shape for Your Face
Not sure which glasses shape looks best on you? Learn how round, square, oval, and heart-shaped faces pair with different frame styles, and why comfort and fit matter just as much as appearance.
David B. Sabin
Jul 24 min read


Viral Conjunctivitis, Also Known as “Pink Eye”: Symptoms, Treatment, and When to See an Eye Doctor
Viral pink eye is a common and contagious cause of red, watery, irritated eyes. Learn how it spreads, why antibiotics usually are not needed, and when an eye exam is important.
David B. Sabin
Jun 305 min read


Pseudotumor Cerebri Symptoms: How Eye Doctors Check and Monitor the Optic Nerve
Pseudotumor cerebri can feel like a brain pressure problem and may affect the optic nerves before vision loss is obvious. A comprehensive eye exam can help detect optic nerve swelling, visual field changes, and other warning signs that need medical attention.
David B. Sabin
Jun 294 min read


Dermal Fillers and Eye Health: Can Fillers Increase the Risk of CRVO?
Facial fillers are popular cosmetic treatments, but rare vascular complications can affect vision. Here’s what patients should know about retinal vein occlusion, filler-related vascular risk, and urgent eye symptoms.
David B. Sabin
Jun 264 min read


Blue Light Glasses: Do They Really Help?
Blue light glasses may make screens feel more comfortable for some people, but research shows they are not a cure for digital eye strain. Here’s what patients should know.
David B. Sabin
Jun 255 min read


Anti-Reflective Coating: Is It Worth It?
Anti-reflective coating can reduce glare, improve night driving comfort, make computer use easier, and help your glasses look clearer and better in photos. Learn when AR coating is worth adding to your prescription lenses.
David B. Sabin
Jun 244 min read


Choroidal Nevus vs. Ocular Melanoma: What Patients Should Know About a “Freckle” in the Eye
A choroidal nevus is often called a freckle inside the eye. Most are harmless, but some need monitoring because certain features may raise concern for ocular melanoma. Learn how eye exams, retinal imaging, OCT, and follow-up visits help protect your vision.
David B. Sabin
Jun 234 min read


Super Glue in the Eye: What Patients and Eye Doctors Need to Know
Super glue in the eye can cause the eyelids or lashes to stick together and may scratch the cornea. Do not force the eye open or use acetone. Eye doctors may use sterile ophthalmic ointment, warm compresses, and careful treatment to protect the eye.
David B. Sabin
Jun 194 min read


Patient friendly Guide to Color Deficiency vs. Color Blindness: What Patients Should Know
Most patients who are called “color blind” can still see color, but certain shades may be harder to tell apart. Learn how color vision deficiency works, what causes it, and when color changes should be checked by an eye doctor.
David B. Sabin
Jun 184 min read


Part 6 | How to Read an OCT RNFL: Understanding Optic Nerve and Glaucoma Testing
Learn how OCT RNFL scans help evaluate the optic nerve and glaucoma risk by measuring retinal nerve fiber layer thickness, quadrants, clock hours, TSNIT curves, and progression.
David B. Sabin
Jun 176 min read


Part 5 | How to Read an HVF 24-2 Visual Field: A Practical Guide for Glaucoma Testing
Learn how eye doctors read an HVF 24-2 visual field, including reliability, grayscale, total deviation, pattern deviation, MD, PSD, VFI, and common glaucoma patterns.
David B. Sabin
Jun 166 min read


Part 3 | Glaucoma Treatment Options: Eye Drops, Laser Procedures, and Surgery
Glaucoma treatment may include prescription eye drops, laser procedures, or surgery. Learn how different glaucoma drops work and when laser or surgical options may be recommended.
David B. Sabin
Jun 127 min read
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3825 Henderson Blvd, Suite 103, Tampa, FL 33629
813-843-2653
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