Vision Screenings vs Comprehensive Exams

The following article addresses the difference between a vision screening, which is limited in scope and in what it can detect, and a comprehensive eye examination from an optometrist, which is an essential aspect for testing visual acuity and maintaining eye health.

Vision Screenings vs Comprehensive Exams in PRIMARYCITY

How Vision Screening differs from Comprehensive Tests

Vision screening is a limited tool that can be used in certain instances, to determine whether further visual assessment is needed. It is never a substitute for a comprehensive examination from an optometrist or medical ophthalmologist to assess overall eye health. 

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What Screening can Test For

They are used to identify potential problems, particularly among children, who might require further evaluation by an optometrist or ophthalmologist.

They are not diagnostic tools. Nor are those who generally administer them qualified to do so. Studies show that a vision screening provides less than 4% of what is necessary for a comprehensive eye exam.

Who is Qualified to Give Vision Screening?

  • A school nurse: To determine if a child might have ocular problems requiring more thorough assessment from an optometrist or ophthalmologist.
  • Department of Motor Vehicles staff: To judge whether someone has adequate eyesight to safely drive a car.
  • A pediatrician: As part of routine physical check-ups for babies and young children. During the stages of a baby’s development, pediatricians will check to ensure that their vision is progressing normally.
What to Expect from An Eye Exam

What to Expect from An Eye Exam

Eye examinations include simple tests to assess general vision, as well as more comprehensive examinations for overall eye health. Depending on how extensive the testing an exam can take up to 90 minutes. Exams for the young and healthy are generally shorter in duration and should average under 30 minutes. Many experts recommend that children have a comprehensive examination before beginning grade school, followed by subsequent annual testing. Common tests include:

  • Assess all aspects of eye health
  • Detect and diagnose conditions involving injury, infection, or eye disease
  • Treat, monitor, and maintain eye health
  • Identify perceptual, cognitive, and developmental deficits, as well as neurological challenges affecting the entire visual system, which might require Vision Therapy

Who is Qualified to Give An Examination?

  • Optometrists: As licensed professionals, optometrists can test and evaluate patients, as well as identify and treat eye disorders.
  • Ophthalmologists: As trained medical doctors, they have the ability to give comprehensive examinations, diagnose, and treat ocular disorders, including performing surgery and other procedures on their patients.

Common Questions

There are very few benefits to vision screening. While they may be useful for identifying certain problems in school children, the vast majority of visual problems go undetected during a screening. Regardless of how a child performs during a vision screening, they should always have a follow-up comprehensive eye examination to monitor eye health. Vision screening is never a substitute for a proper eye exam.
Before scheduling an appointment, ask around for recommendations of good specialists in your region. It is best to select professionals with good reputations.
Speak with an optometrist to find out how often you should have a thorough exam based on your age and health. If you haven't had one yet, schedule one today. Many eye doctors recommend that healthy adults have annual or biennial evaluations. Diabetics and those susceptible to ocular disorders should have annual visits, or even more frequently, depending on their doctor's recommendations.
According to the American Optometric Association a typical vision screening only covers 4% of a comprehensive eye exam. A vision screening is testing how well one can see on a eye chart from 20 feet away, it does not check the ability to see up close, eye health, and eyeglasses prescription. During a comprehensive eye exam, your eyesight will be tested to ensure that you can see clearly at near and far distances. Additionally, you will be screened for conditions like macular degeneration and glaucoma. Comprehensive eye exams can also uncover other health problems which cannot be detected during a vision screening. Diabetes and high blood pressure can both be detected through an eye exam. People are often unaware of the effects these conditions can have on their eyes and vision. For children beginning to read, special needs, or anyone who has had a traumatic brain injury, there is an even more thorough evaluation called a functional vision exam or developmental vision exam. These test not only near, far, and eye health, but also the brains function within the visual process.
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Summary

As a preliminary tool, vision screening may occasionally identify certain eye complications, particularly in the case of schoolchildren. However, their ability to do so is statistically poor. The American Optometric Association (AOA) emphasizes that vision screenings are not the same as comprehensive eye examinations, and that extensive eye tests are essential for children to have success in school.

Some key statistics detailing the poor track record of vision screening include the following:

  • 75% Failure: Up to 75% of visual screenings fail to identify vision problems.
  • 61% Follow-Up Failure: 61% of children FOUND to have vision problems never see a doctor.
  • 15%: Less than 15% of preschool children ever have a professional eye exam.
  • 4%: Vision screening constitutes less than 4% of what is necessary for a comprehensive eye examination.
Such troubling statistics prove that vision screening can never be a substitute for comprehensive examinations by licensed professionals to evaluate, diagnose, and treat ocular conditions. If you would like to schedule an appointment for a comprehensive eye examination, contact our office today. You can schedule an eye exam with our eye doctor by calling 111-222-3333. Patients searching for advanced medical eye care visit our clinic from all over STATE, and we are proud to be a leading provider of medical eye care services for patients from CITY, SECONDARY1, SECONDARY2, and SECONDARY3.

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