Functional Vision Exam
Visual Skills and Functional Vision
A Functional Vision Exam is the most effective way to assess how well your eyes and visual system work together. Unlike a routine eye test, a functional eye exam evaluates eye tracking, focusing, coordination, central vision, fusion vision, and visual processing to ensure comfortable and efficient vision for reading, learning, driving, and everyday activities.
At Nandadeep Eye Hospital, we offer comprehensive functional vision testing to assess visual skills and functional vision using advanced diagnostic technology. A functional vision test is recommended for children and adults experiencing headaches, eye strain, blurred or double vision, reading difficulties, or poor concentration. We also recommend a comprehensive eye examination for infants at six months of age, followed by regular eye check-ups to support healthy visual development and detect vision problems early.
What is Functional Vision?
Functional vision refers to how the brain, eyes, and visual pathways work together to help individuals interact effectively with their surroundings. The key aspects of functional vision include the following:
1. Binocularity/Vergence
- This skill involves both eyes aligning to focus on the same point, ensuring they work in a coordinated and precise manner. Proper eye teaming enables clear, comfortable, and efficient depth perception.
- If the eyes do not align correctly, the brain struggles to merge images from each eye, leading to double vision (diplopia) and loss of 3D depth perception. Poor eye coordination can also cause eye strain and fatigue.
2. Eye Focusing/Accommodation
- This refers to the ability to see objects clearly and shift focus between different distances.
- For instance, a person might struggle to maintain clear vision while reading, experiencing intermittent or constant blurriness. Similarly, a student may see a book clearly but find it difficult to refocus on a distant whiteboard and back again.
3. Eye Movement (Ocular Motility) – Saccades and Pursuits
- This involves the eye’s ability to track moving objects, shift focus between different objects, and maintain fixation on a stationary target.
- Activities like following a moving ball, watching a butterfly in flight, or smoothly reading across a line of text require efficient eye movements. Maintaining eye contact while conversing is an example of sustained fixation on a still object.
Assessing Visual Processing
To gain a complete understanding of a patient’s vision, standardized tests evaluate various aspects of visual processing. Since vision is a learned skill, these areas can be improved through vision therapy. The following skills may be assessed:
Developmental Approach to Vision Therapy
At Nandadeep Eye Hospital, we adopt a developmental approach to vision therapy, ensuring the patient’s vision matures at all levels. To support this, we assess primitive reflexes that developed in utero and early postnatal stages, which might still interfere with visual development. If these reflexes remain active, targeted movement exercises help integrate them, improving cognitive and motor functions.
We evaluate the following primitive reflexes:
At Nandadeep Eye Hospital, our goal is to provide a structured and individualized approach to vision care, ensuring each patient receives the necessary support to enhance their visual and cognitive development.
Meet Our SpecialistsBook your consultation with eye specialist
Optom Sayan Mukherjee
B.Optom., M. Optom. Consultant Optometrist, Vision Therapy, Speciality Contact lens
