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


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


Anterior Uveitis / Iritis: Eye Pain, Redness, and Light Sensitivity Should Not Be Ignored
Anterior uveitis, also called iritis, is inflammation inside the front part of the eye. It can cause eye pain, redness, blurry vision, and light sensitivity. Unlike mild irritation or pink eye, iritis often needs prescription treatment and close follow-up to prevent complications.

David B. Sabin
Jul 34 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


How Often Should You Replace Your Glasses?
Glasses do not last forever. Prescription changes, scratched lenses, worn coatings, frame damage, and lifestyle changes can all affect how well your glasses work. Learn when it may be time for a new pair.

David B. Sabin
Jul 14 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


A Patient-Friendly Guide to Pupils: What Your Eye Doctor Is Checking
Your pupils can tell your eye doctor a lot about your eye health, nerve function, and how your eyes respond to light. Learn what is normal, what may need attention, and when to schedule an eye exam.

David B. Sabin
Jun 276 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


An Optometrist’s Guide to Pupils: APD Testing, Unequal Pupils, and What They Can Mean
Pupil testing is a small but powerful part of the eye exam. This optometrist guide explains how to check pupil size, reactivity, anisocoria, and APD, plus what abnormal pupil findings may suggest about the optic nerve, retina, autonomic system, or neurologic disease.

David B. Sabin
Jun 227 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


Clinical Guide to Color Vision Deficiency: Types, Testing, Medications, and Neurologic Causes
Color vision deficiency is not always simple “color blindness.” Learn how clinicians test color vision, distinguish congenital from acquired defects, and recognize medication, retinal, optic nerve, and neurologic causes of color vision changes.

David B. Sabin
Jun 1812 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 4 | Types of Glaucoma Visual Field Defects: How Glaucoma Can Affect Your Vision
Glaucoma can cause different patterns of vision loss before patients notice symptoms. Learn how visual field testing detects nasal steps, arcuate defects, paracentral defects, tunnel vision, and other glaucoma-related changes.

David B. Sabin
Jun 156 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


Part 2 | Different Types of Glaucoma: What Patients Should Know
Glaucoma is not just one condition. Learn the main types of glaucoma, how they affect the optic nerve, and why regular eye exams are important for protecting vision.

David B. Sabin
Jun 114 min read
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3825 Henderson Blvd, Suite 103, Tampa, FL 33629
813-843-2653
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