Glaucoma
Conditions
Keywords
OrCam, Low-vision device, End-stage glaucoma
Brief summary
To determine the impact of OrCam over 1 month on health-related quality of life (HRQoL) in subjects with advanced glaucoma using the National Eye Institute Visual Function Questionnaire 25 (NEI-VFQ-25). To identify tasks for which subjects are using the OrCam device and patient satisfaction.
Detailed description
Participants will document their daily impression about the use of OrCam, a small camera attached to their glasses over a 1-month period. They will attend 2 appointments at Wills Eye Hospital Glaucoma Research Center (baseline and final visit). Participant's will be trained to use the OrCam device at baseline visit and complete a best-corrected visual acuity assessment ETDRS (early treatment diabetic retinopathy study) and the NEI-VFQ-25 questionnaire. They will also read a short newspaper article. The NEI-VFQ-25 includes a series of 25 questions pertaining to vision or feelings about a vision condition. Answers are selected among a numbered list of possible responses, the values of which are ultimately recoded and converted to a 0 to 100 scale. Items within each subscale are averaged together to create 12 subscale scores. An overall composite score will be calculated by averaging vision-targeted subscale scores, excluding the general health rating question. Participants will read a short article. They will be asked to grade their reading difficulty between 1 (unable to read) to 10 (able to read without difficulty). Time to read article will be recorded. Reading task will be performed with best correction - with and without the assistance of the OrCam device. Subjects will utilize OrCam daily for one month. Each week, subjects will record thoughts about the device in a log book or by using audio tape recorder, according to patient's personal preference. Final assessment at 1 month will include best-corrected visual acuity (ETDRS), NEI-VFQ-25, and the newspaper-reading task with and without OrCam assistance. A satisfaction questionnaire will be completed in order to assess subjects' overall feelings regarding OrCam. Audio log books will be analyzed for specific factors and recorded by a research assistant.
Interventions
DEVICEOrCam
The OrCam low vision aid, camera attached to glasses, used by 27 glaucoma subjects for 1 month.
Sponsors
Wills Eye
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Glaucoma any type, characterized by glaucomatous optic neuropathy and corresponding visual field (VF) defect * Visual acuity of 20/400 to hand motion (HM) in better eye or visual field less than 10 degrees in better eye and having difficulty reading. * Age 18 years or older * Able to understand and speak English * Able to use an electronic recording device * Able to operate a computerized system
Exclusion criteria
* Neurological or musculoskeletal problems that would influence performance on activities of daily living * Incisional eye surgery within past three months * Laser therapy within previous month * Any cause for visual impairment other than glaucoma * Photophobia * Any medical condition precluding subject from providing reliable, valid data
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Impact of OrCam on Vision-related Quality of Life | 1 month | National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25) is a series of questions pertaining to vision or feelings about a vision condition in relation to functional status to assess their quality of life. Multiple choice responses from 12 subscales (general vision, near vision, distance vision, ocular pain, social functioning, mental health, roll difficulties, dependency, driving, color vision and peripheral vision) were recorded into a 0-100 score where 0 represents the lowest perceived vision difficulties and 100 the highest perceived difficulties. NEI-VFQ-25 was used to measure the number of participants who showed improvement in vision-related quality of life after using the OrCam device over a one month period. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Impact of OrCam on Reading Newspapers | 1 month | Participants were asked 'Did OrCam increase your quality of life in reading newspapers?' after a one month trial period with the device. Number of subjects answering Yes is provided. |
| Impact of OrCam on Grocery Shopping | 1 month | Participants were asked 'Did OrCam improve your quality of life while grocery shopping?' after a one month trial period with the device. Number of subjects answering Yes is provided. |
| Recommending OrCam to Others | 1 month | Participants were asked 'How likely would you be to recommend OrCam to another visually impaired person?' after a one month trial period with the device. Number of subjects answering Very Likely or Likely is provided. |
Countries
United States
Participant flow
Participants by arm
| Arm | Count |
|---|---|
| Glaucoma Subjects 27 glaucoma subjects were given the OrCam low vision aid device to use for one month. National Eye Institute Visual Function Questionnaire - 25 (NEI-VFQ-25) was administered at baseline and 1 month. | 27 |
| Total | 27 |
Baseline characteristics
| Characteristic | Glaucoma Subjects |
|---|---|
| Age, Continuous | 59.3 years |
| Region of Enrollment United States | 27 participants |
| Sex: Female, Male Female | 8 Participants |
| Sex: Female, Male Male | 19 Participants |
Adverse events
| Event type | EG000 affected / at risk |
|---|---|
| deaths Total, all-cause mortality | 0 / 27 |
| other Total, other adverse events | 0 / 27 |
| serious Total, serious adverse events | 0 / 27 |
Outcome results
Primary
Impact of OrCam on Vision-related Quality of Life
National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25) is a series of questions pertaining to vision or feelings about a vision condition in relation to functional status to assess their quality of life. Multiple choice responses from 12 subscales (general vision, near vision, distance vision, ocular pain, social functioning, mental health, roll difficulties, dependency, driving, color vision and peripheral vision) were recorded into a 0-100 score where 0 represents the lowest perceived vision difficulties and 100 the highest perceived difficulties. NEI-VFQ-25 was used to measure the number of participants who showed improvement in vision-related quality of life after using the OrCam device over a one month period.
Time frame: 1 month
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| Glaucoma Subjects | Impact of OrCam on Vision-related Quality of Life | 20 Participants |
Secondary
Impact of OrCam on Grocery Shopping
Participants were asked 'Did OrCam improve your quality of life while grocery shopping?' after a one month trial period with the device. Number of subjects answering Yes is provided.
Time frame: 1 month
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| Glaucoma Subjects | Impact of OrCam on Grocery Shopping | 5 Participants |
Secondary
Impact of OrCam on Reading Newspapers
Participants were asked 'Did OrCam increase your quality of life in reading newspapers?' after a one month trial period with the device. Number of subjects answering Yes is provided.
Time frame: 1 month
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| Glaucoma Subjects | Impact of OrCam on Reading Newspapers | 15 Participants |
Secondary
Recommending OrCam to Others
Participants were asked 'How likely would you be to recommend OrCam to another visually impaired person?' after a one month trial period with the device. Number of subjects answering Very Likely or Likely is provided.
Time frame: 1 month
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| Glaucoma Subjects | Recommending OrCam to Others | 23 Participants |