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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
9 hours ago4 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
3 days ago4 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
5 days ago4 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
6 days ago5 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


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


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 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


Part 1 | Glaucoma: Why Regular Eye Exams Are Important for Protecting Your Vision
Glaucoma is often called the silent thief of sight because it can damage vision before symptoms are noticeable. Learn how regular eye exams help detect and monitor glaucoma early.
David B. Sabin
Jun 104 min read


Headaches and Eye Exams: Could Your Vision Be Part of the Problem?
Headaches are not always caused by the eyes, but vision problems, digital eye strain, dry eye, and focusing issues can contribute. A comprehensive eye exam can help rule out eye-related causes and guide the next step.
David B. Sabin
Jun 94 min read


VIZZ and Other Eye Drops for Early Presbyopia: Can Drops Help You Read Up Close?
Presbyopia is the age-related loss of near focusing ability that often starts in your 40s. New prescription eye drops may temporarily improve near vision for some adults, but they are not right for everyone. Here’s what to know before trying presbyopia drops.
David B. Sabin
Jun 84 min read


Recurrent Corneal Erosions: Why Your Eye Pain Keeps Coming Back
Recurrent corneal erosions can cause sharp morning eye pain, tearing, redness, and light sensitivity. Learn why they happen, why they keep coming back, and how an eye doctor can help protect the cornea.
David B. Sabin
Jun 64 min read
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3825 Henderson Blvd, Suite 103, Tampa, FL 33629
813-843-2653
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