Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Observational Study
. 2021 Jul;69(7):1867-1871.
doi: 10.4103/ijo.IJO_3154_20.

Role of improved distance and near visual acuity with low vision aids to enhance stereopsis in retinal diseases

Punita Kumari Sodhi  1 , Akanksha Gautam  1 , Nandini Sharma  2 , Kamlesh Anand  1 , Ramneeq Singh Sodhi  3
Affiliations
Observational Study

Role of improved distance and near visual acuity with low vision aids to enhance stereopsis in retinal diseases

Punita Kumari Sodhi et al. Indian J Ophthalmol. 2021 Jul.

Abstract

Purpose: The purpose of this study was to examine role of improved distance and near best-corrected visual acuity (DBCVA and NBCVA) with use of magnification devices to enhance stereopsis in low vision (LV) subjects having retinal diseases.

Methods: In a cross-sectional observational study without control, 84 subjects having LV due to retinal diseases were examined for an improvement of BCVA with use of magnifying low vision aids (LVAs) (2X for DBCVA and 3X for NBCVA). The stereopsis scores on titmus fly test were recorded with near refractive correction "on" and then with 3X magnification. The improvement in stereopsis for distance was however estimated through statistical correlation values.

Results: The DBCVA (P < 0.001), NBCVA (P < 0.001) and stereopsis (P < 0.001) improved statistically significantly (SS) following magnifying LVA. There was no correlation between pre-LVA stereopsis and pre-LVA DBCVA (r = 0.059; P = 0.444;NSS) and post-LVA DBCVA (r = 0.054; P = 0.487;NSS); and no correlation between post-LVA stereopsis and pre-LVA DBCVA (r = 0.042; P = 0.592;NSS) and post-LVA DBCVA (r = 0.08; P = 0.920;NSS). There was no correlation between pre-LVA stereopsis and pre-LVA NBCVA (r = 0.044; P = 0.572;NSS) and no correlation between post-LVA stereopsis and pre-LVA NBCVA (r = 0.108; P = 0.165;NSS). But positive correlation between pre-LVA stereopsis and post-LVA NBCVA (r = 0.347; P < 0.001) and between post-LVA stereopsis and post-LVA NBCVA (r = 0.445; P < 0.001) was SS.

Conclusion: The use of magnification as LVA improves both the BCVA and stereopsis. The increase in DBCVA with LVA improves the stereopsis for distance though it may not be SS while improvement in NBCVA with LVA enhances stereopsis for near objects in SS manner.

Keywords: Low vision; low vision aids; stereopsis; stereopsis in low vision; stereopsis tests; visual acuity.

PubMed Disclaimer

Conflict of interest statement

None

Figures

Figure 1
Figure 1
Values of DBCVA pre- and postmagnification
Figure 2
Figure 2
Values of NBCVA pre- and postmagnification
Figure 3
Figure 3
Values of Stereopsis pre- and postmagnification
See this image and copyright information in PMC

References

    1. Barker L, Thomas R, Rubin G, Dahlmann-Noor A. Optical reading aids for children and young people with low vision. Cochrane Database Syst Rev. 2015:CD010987. doi:10.1002/14651858.CD010987.pub2. - PMC - PubMed
    1. Cao KY, Markowitz SN. Residual stereopsis in age-related macuar degeneration patients and its impact on vision related abilities:A pilot study. J Optom. 2014;7:100–5. - PMC - PubMed
    1. O'Connor AR, Birch EE, Anderson S, Draper H, FSOS Research Group The functional significance of stereopsis. Invest Ophthalmol Vis Sci. 2010;51:2019–23. - PubMed
    1. Kulp MT, Schmidt PP. A pilot study. Depth perception and near stereoacuity:Is it related to academic performance in young children? Binocul Vis Strabismus Q. 2002;17:129–34. discussion 133. - PubMed
    1. Vingolo EM, Limoli PG, Steigerwalt RDJ, Carlesimo SC, Salvatore S. Abnormal stereopsis and reduced retinal sensitivity in patients with retinitis pigmentosa. Int Ophthalmol. 2020;40:179–84. - PubMed

Publication types