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


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
5 days ago4 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
6 days ago10 min read


Thyroid Eye Disease: Symptoms, Causes, and Treatment Options
Thyroid eye disease can cause dryness, bulging eyes, eyelid changes, and double vision. Learn what causes it, how it is treated, and when to seek urgent eye care.

David B. Sabin
Aug 65 min read


Advanced Clinical Test | Parks-Bielschowsky Three-Step Test: How To Use It
The Parks 3-step test helps eye doctors evaluate vertical double vision by narrowing down which eye muscle may be causing the misalignment. This clinician-focused guide explains how to use the test, interpret hypertropia patterns, and recognize when findings may point to a superior oblique palsy or another cause of diplopia.

David B. Sabin
May 223 min read


Clinical Guide for Doctors: Diplopia Evaluation, Cranial Nerve Palsies, and Diabetes
Diplopia requires a systematic clinical approach. This doctor-focused guide reviews how to separate monocular from binocular double vision, localize cranial nerve and eye muscle patterns, recognize urgent red flags, and understand how diabetes can contribute to microvascular ischemic cranial nerve palsies.

David B. Sabin
May 216 min read


Patient Friendly Guide to Double Vision: Causes, Symptoms, and When to Get Your Eyes Checked
Double vision, or diplopia, can happen for many reasons—from dry eye and prescription changes to eye muscle or nerve problems. Learn when double vision should be checked and when it may be an

David B. Sabin
May 205 min read
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813-843-2653
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