Objective oculomotor documentation for commercial-vehicle cases — from records review through deposition and trial testimony — under a licensed Texas optometrist.
Commercial-vehicle collisions involve force profiles well outside the range of typical passenger-vehicle impacts. When a plaintiff describes double vision, reading fatigue, screen intolerance, or ongoing headaches months after the incident, opposing counsel routinely points to the absence of a structural finding on imaging. A standardized oculomotor workup addresses that gap on its own terms: with measurements, published clinical norms, and a signed report from a licensed Texas optometrist.
The forensic vision practice supports Texas attorneys handling 18-wheeler, delivery-fleet, work-truck, and other commercial-vehicle matters at every stage — from early records review through deposition and trial testimony. The clinical measurements are the same across cases; what varies is which findings are relevant to the theory of the case, and how they are presented.
Commercial-vehicle collisions transmit forces to the head and neck that are frequently sufficient to disrupt the oculomotor system without producing a structural lesion visible on CT or MRI. The functional cost — impaired eye teaming at reading distance, unstable fixation on screens, slowed vergence response — is real and measurable, and it is exactly the kind of finding that a general eye examination is not built to quantify.
For commercial-vehicle plaintiffs whose acuity is preserved but whose day-to-day visual life is not, the standardized oculomotor battery produces a defensible written record. For defense counsel, the same methodology produces a testable dataset with published norms rather than clinician impression alone.
The clinical workup pairs digital oculomotor measurement with direct clinical observation scored by a licensed Texas optometrist. Digital values are compared, one by one, against published normative ranges drawn from the peer-reviewed optometric literature — never an internal benchmark.
Each written report presents the recorded measurements, the named clinical reference range for every value, a test validity analysis, and a clinical impression stated to a reasonable degree of optometric certainty. The methodology is reproducible across dates and examiners so a second dataset can be run at 12 weeks for serial documentation.
Tracking accuracy of a moving target; deficits present as saccadic intrusions.
Speed and accuracy of rapid gaze shifts between fixed targets.
Steadiness of gaze on a stationary target over sustained periods.
Near point of convergence in centimeters against clinical norms.
Rate at which the eyes re-align between near and distance targets.
Dr. Rizwan Jaffer, O.D., is a Therapeutic Optometrist and Optometric Glaucoma Specialist practicing under Texas Optometry License #7014TG, with a clinical focus on post-trauma oculomotor assessment and expert witness services.
18-wheeler, delivery-fleet, work-truck, transit, and other commercial or fleet cases where post-trauma oculomotor dysfunction is at issue. Engagements begin with records review; the in-person assessment is added when a signed clinical report is required for the case file.
Engagements are considered on the merits. Every retention proceeds from the same methodology, the same measurements, and the same published clinical norms, regardless of which side has retained the practice.
Records review is handled remotely. When an in-person assessment is required, the client travels to a Houston-area location for a single non-invasive appointment; many firms arrange this as a case cost. The signed report is returned to counsel by secure PDF.
To open a matter, please email forensic@rizeye.com or use the attorney referral form. See also the Texas Vision Expert Witness hub.
Written inquiries are welcome from attorneys throughout Texas.
Open Attorney Referral Formforensic@rizeye.com