Related Experiment Video
Updated: Jan 19, 2026

05:36
Subjective Refraction Test Using a Smartphone for Vision Screening
Published on: October 18, 2024
1.7K
Vision screening of specialized populations
Summary
This study outlines vision screening tests for specialized populations and referral criteria. It aims to guide organizations in establishing effective community eye care screenings.
Area of Science:
- Ophthalmology
- Public Health
- Optometry
Background:
- Community-based vision screening programs are crucial for early detection of visual impairments.
- Specialized populations often require tailored approaches for effective eye care services.
Purpose of the Study:
- To detail vision screening tests utilized by the Pennsylvania College of Optometry's Community Eye Care Services Program.
- To elaborate on referral criteria for specialized populations within community eye care settings.
- To provide a guide for organizing vision screening initiatives.
Main Methods:
- Description of vision screening protocols for diverse and specialized patient groups.
- Elaboration of specific referral pathways and criteria based on screening outcomes.
- Focus on practical implementation for community-based programs.
Main Results:
- Established vision screening tests suitable for specialized populations.
- Defined clear referral criteria to ensure appropriate follow-up care.
- Provided a framework for organizing community eye screenings.
Conclusions:
- The described vision screening tests and referral criteria are effective for specialized populations.
- The paper serves as a valuable resource for organizing community eye care screenings.
- Implementation of such programs can improve access to essential vision services.
Related Concept Videos
Special Staining Techniques
1.2K
Specialized staining techniques play a vital role in microbiology by enabling the visualization of specific bacterial structures that remain undetectable with standard microscopy methods. These techniques not only enhance the structural visualization of bacterial cells but also provide critical insights into their pathogenicity and classification. Additionally, they support diagnostic and research endeavors in microbiology by identifying key bacterial features.Capsule Staining for Virulence...
1.2K
05:36Subjective Refraction Test Using a Smartphone for Vision Screening
1.7K
This paper presents the protocols and clinical validation data for using a smartphone app to subjectively measure refractive...
1.7K
09:29A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
13.5K
We describe an indoor, portable, standardized course that can be used to evaluate obstacle avoidance in persons who have ultralow vision. The course is relatively inexpensive, simple to administer, and has been shown to be reliable and...
13.5K
Vision
59.4K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
59.4K
Color Vision
1.4K
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
1.4K
Introduction to Special Senses
7.3K
Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
7.3K

