Visual performance of optical films utilizing Spatio-Temporal Optical Phase technology.
Optom Vis Sci
; 101(4): 195-203, 2024 Apr 01.
Article
in En
| MEDLINE
| ID: mdl-38684062
ABSTRACT
SIGNIFICANCE:
Spatio-Temporal Optical Phase technology utilizes film pairs containing optical elements applied to standard single-vision spectacle lenses. This technology provides a dynamic optical cue that may have efficacy in reducing the rate of myopia progression, but the visual performance of this technology is unknown.PURPOSE:
This study aimed to assess the visual performance of film pairs containing optical elements (tests) and a film pair with no optical elements (control).METHODS:
In this randomized, single-masked, bilateral wear study, 42 participants aged 18 to 40 years wore four test designs (E, F-1, G, and F-2) and the control. Subjective data (subjective ratings [1 to 10 scale] clarity of vision [far-away, intermediate, near] and vision [at night, while walking, overall satisfaction], and willingness to purchase [yes/no response]) were collected after 3 days. Visual acuity (VA)-based measures (monocular high/low-contrast VA [6 m], contrast sensitivity [6 m], and binocular high-contrast VA [6 m and 40 cm]) were collected at dispensing. Visual acuity-based measures were also collected while wearing spectacles with no film. Analyses were performed using linear mixed models and the χ2 test. Significance was set at 5%.RESULTS:
The control performed better than any test for all subjective ratings (mean differences, 1.6 to 3.1 units p<0.001), willingness to purchase (p<0.001), and designs F-1 and F-2 for binocular high-contrast VA at 40 cm (p=0.001 and p=0.01, respectively). Clarity of vision was significantly worse with F-2 compared with F-1 and G (p<0.001 and p=0.02, respectively). There were no differences between tests for any other subjective rating (p>0.1), willingness to purchase (p=0.11), or any VA-based measure (p>0.08). There were no differences between control and spectacles with no film for any VA-based measure (p>0.08).CONCLUSIONS:
All four test film pairs reduced visual performance compared with control to a degree comparable with other myopia management devices. There was no difference in visual performance between three of the four test film pairs.
Full text:
1
Database:
MEDLINE
Main subject:
Visual Acuity
/
Eyeglasses
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Optom Vis Sci
Journal subject:
OPTOMETRIA
Year:
2024
Type:
Article