Vision Screening vs. Eye Exam: What’s the Difference?

Jun 1, 2025

Call us or Schedule appointment online

If you’ve ever had your vision checked at school, work, or a DMV office, you’ve likely experienced a vision screening. These quick tests are helpful, but they’re not a substitute for a comprehensive eye exam with an optometrist. 

At Cedar Hill Eye Care, we often hear the question: “If I passed a vision screening, do I still need an eye exam?” The short answer: yes, you still need to see an eye doctor for an exam. In this blog, we explore the differences between vision screenings and eye exams and explain why a full eye exam is essential for your vision and health. 

What is a vision screening? 

A vision screening is a basic vision check that typically tests visual acuity, or how clearly you can see letters or objects at a distance. It may be performed by a school nurse, employer, or technician and usually involves reading from an eye chart. 

These screenings can detect some obvious vision problems, but are limited in scope. They do not evaluate eye health or identify more subtle issues like eye coordination, focusing ability, or early signs of eye disease.

What is a comprehensive eye exam? 

A comprehensive eye exam is a detailed evaluation performed by a licensed optometrist. At Cedar Hill Eye Care, our comprehensive eye exams in Cedar Hill, TX, go beyond just checking how well you can see or updating your prescription for glasses or contact lenses. We assess the health of your eyes and how they function together.

Here’s what a typical comprehensive exam includes: 

    • Visual acuity testing

    • A refraction test to determine your prescription

    • Eye muscle and coordination testing

    • Examination of the front and back of the eye

    • Dilation, when needed, to check the retina and optic nerve

We also customize exams based on your lifestyle, whether you’re on a screen all day, driving at night, or managing a health condition like diabetes or high blood pressure. 

Why you need regular comprehensive eye exams 

Even if you have 20/20 vision, your eyes could still be at risk. Many eye diseases, such as glaucoma, develop without noticeable symptoms until significant vision loss occurs. Regular eye exams can catch these issues early when treatment is most effective. 

Regular eye exams are even more critical for: 

    • Children, whose vision problems can affect learning

    • Anyone with chronic health conditions

    • Contact lens wearers or those experiencing dry eyes, eye strain, or frequent headaches

Schedule your exam today 

Proactive care leads to lifelong vision health. If it’s been more than a year since your last eye exam or if you’ve been relying solely on vision screenings, schedule an appointment with our Cedar Hill optometrists today.

You’ll leave with a clearer understanding of your eye health, a personalized prescription if needed, and expert guidance for protecting your vision for years to come. We hope to see you soon!  

How to Keep Your Eyes Healthy During the Holidays

How to Keep Your Eyes Healthy During the Holidays

The holidays are full of excitement, from shopping and visiting loved ones to enjoying holiday movies online. However, all that activity can leave your eyes feeling tired, dry, or strained. Bright lights, screens, and constantly changing environments can also make it...

What Happens If You Skip Your Annual Eye Exam?

What Happens If You Skip Your Annual Eye Exam?

Did you just realize it’s been over a year since your last eye exam? Maybe life got busy, or your vision seemed fine, so it slipped down the priority list. Many people assume that if their vision isn’t blurry, everything is okay, but eyes can change quietly over...

Advanced Vision Care

Schedule Appointment

Advanced Vision Care