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


Myopia Control in Children: How We Can Slow the Progression of Nearsightedness
Myopia, or nearsightedness, often becomes stronger as children grow. Modern myopia-control treatments are designed not only to help children see clearly today, but also to slow the eye growth that causes their prescription to worsen over time.

David B. Sabin
4 minutes ago8 min read


Eye Coloboma: 5-Question Multiple-Choice Quiz
Eye coloboma is a congenital condition caused by incomplete closure of the embryonic fissure during early eye development. This clinician-focused guide reviews the embryology, common clinical types, OCT findings, retinal detachment risk, differential diagnosis, systemic associations, and practical management strategies for eye doctors.

David B. Sabin
3 days ago2 min read


RGP Contact Lens Fitting: A Practical Guide When You Only Have a Keratometer
RGP lenses can provide sharp, stable vision for patients with astigmatism, keratoconus, and irregular corneas. Learn how eye doctors evaluate lens movement, fluorescein patterns, comfort, and corneal health during an RGP fitting.

David B. Sabin
4 days ago9 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
5 days ago4 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
6 days ago4 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


Patient Friendly Version: Altitudinal Visual Field Defects: Why the Pattern Matters
An altitudinal visual field defect means the top or bottom part of vision is missing. This pattern often respects the horizontal midline and may point toward disease in the eye, retina, or optic nerve. Brain-related visual field defects more often respect the vertical midline, making the pattern of vision loss an important diagnostic clue.

David B. Sabin
Aug 264 min read


What Is Amblyopia and Why Early Treatment Matters
Amblyopia, often called lazy eye, happens when the brain does not fully learn to use one eye clearly during childhood. Early treatment with glasses, patching, drops, or binocular vision therapy can make a major difference in long-term vision.

David B. Sabin
Aug 244 min read


Why Your Eyes Water When They Are Actually Dry
If your eyes water all day but still feel dry, you may have tear film instability or meibomian gland dysfunction. Learn why dry eye can trigger reflex tearing and how treatment can help restore comfort.

David B. Sabin
Aug 216 min read


What Is a Cover Test? How Eye Doctors Check for Eso, Exo, Hyper, Tropias, and Phorias
A cover test is a simple but powerful eye alignment test that helps detect hidden or visible eye turns. Learn what eso, exo, hyper, tropia, and phoria mean during an eye exam.

David B. Sabin
Aug 208 min read


Horner’s Syndrome vs. Congenital Horner’s Syndrome: What Eye Doctors Look For
Horner’s syndrome can cause a smaller pupil, mild droopy eyelid, and sometimes a lighter-colored iris when present from birth. Learn how optometrists compare acquired Horner’s syndrome with congenital Horner’s syndrome, what red flags require urgent evaluation, and why pediatric cases need careful monitoring for vision development.

David B. Sabin
Aug 196 min read


Optometrist Guide to Adie’s Tonic Pupil: Diagnosis, Symptoms, and Treatment With Glasses and Contacts
Adie’s tonic pupil is a condition where one pupil becomes larger and reacts slowly to light, often causing glare, light sensitivity, and near focusing problems. This guide explains how optometrists diagnose Adie’s pupil, rule out more serious causes of anisocoria, and manage symptoms with reading glasses, bifocals, tinted lenses, polarized sunglasses, and specialty contact lenses.

David B. Sabin
Aug 1810 min read


What Is an Eye Freckle? Choroidal Nevus vs. Conjunctival Nevus vs. Iris Nevus
Eye freckles are usually harmless pigmented spots, but they should be monitored. Learn the difference between choroidal, conjunctival, and iris nevi, how doctors photograph them, and which warning signs need attention.

David B. Sabin
Aug 176 min read


The History of Progressive Lenses: How No-Line Bifocals Changed the Way We See
Progressive lenses may look like regular glasses, but inside the lens is a carefully designed blend of prescriptions that helps your eyes see clearly at far, intermediate, and near distances.

David B. Sabin
Aug 146 min read


The Eye Exam After 40: What Changes and What Your Doctor Is Looking For
Your eye exam after 40 is about more than updating your glasses. It helps detect early signs of presbyopia, glaucoma, dry eye, cataracts, retinal disease, and health conditions like diabetes or high blood pressure.

David B. Sabin
Aug 135 min read


Why Your Glasses Prescription Can Change Even When Your Eyes Are Healthy
A changing glasses prescription does not always mean something is wrong with your eyes. Age, dry eye, blood sugar changes, cataracts, screen use, and normal refractive shifts can all affect how clearly you see. Here’s why your prescription may change even when your eye health is normal.

David B. Sabin
Aug 125 min read


Eye Coloboma: A Clinician-Level Guide to Embryology, OCT Findings, Retinal Detachment Risk, and Management
Ocular coloboma results from incomplete closure of the embryonic fissure, classically producing inferior or inferonasal defects involving the iris, lens zonules, chorioretina, optic nerve, or multiple ocular structures. Clinical evaluation should distinguish typical uveal coloboma from atypical coloboma-like lesions, assess macular and optic nerve involvement, document OCT findings, and monitor for complications such as amblyopia, choroidal neovascularization, and retinal det

David B. Sabin
Aug 119 min read


Co-Managing Cataract Surgery: What to Expect at Your 1-Day, 1-Week, 1-Month, and Final Follow-Up Visits
Cataract surgery follow-up care is essential for safe healing and clear vision. Learn how optometrists co-manage cataract surgery and what is checked at each post-op visit.

David B. Sabin
Aug 105 min read
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3825 Henderson Blvd, Suite 103, Tampa, FL 33629
813-843-2653
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