Low Vision Aids in Glaucoma

Khanna, Anjani; Ichhpujani, Parul

doi:10.5005/jp-journals-10008-1104

Cited by 3 publications

(3 citation statements)

References 89 publications

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“…Optical devices can improve the visual function and promote daily activities; therefore, they should be employed as early as possible. [15] We did not find any association between the age at diagnosis and final visual acuity. This finding is in contrast to other studies that showed a close relationship between age at PCG diagnosis and visual function.…”

Section: Discussioncontrasting

confidence: 53%

“…[6] Poor visual outcomes in their study could be explained by more severe glaucoma population, high prevalence of CYP1B1 mutation, delayed diagnosis, and inadequate follow-up. [12] Poor vision in children with PCG is multifactorial; high IOP in early life causes structural changes in the eye such as globe enlargement, corneal edema and opacity, tears in the Descemet's membrane (Haab's striae), high refractive error, anisometropia, and glaucomatous optic neuropathy [13][14][15] . Corneal edema was present in almost 55% of patients at the time of diagnosis, which resolved after surgery in all cases, but accompanying Haab's striae, with or without corneal edema, persisted in two-third of our patients.…”

Section: Discussionmentioning

confidence: 99%

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The Long-term Visual Outcomes of Primary Congenital Glaucoma

Esfandiari¹,

Prager²,

Hassanpour³

et al. 2020

JOVR

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Purpose: To evaluate the long-term visual outcomes of ab externo trabeculotomy for primary congenital glaucoma (PCG) at a single pediatric ophthalmology center. Methods: In this retrospective single-center case series, data from 63 eyes of 40 patients who underwent ab externo trabeculotomy between September 2006 and June 2018 were included. The data were analyzed for best corrected visual acuity (BCVA), stereopsis, and surgical success. Kaplan–Meier analysis was performed using the surgical success criteria defined as intraocular pressure (IOP) ≤ 21 mmHg and ≥ 20% below baseline without the need for additional glaucoma surgery. Results: BCVA at the time of diagnosis was 0.37 ± 0.48 logMAR, which changed to 0.51 ± 0.56 logMAR at the final follow-up (P = 0.08). Twenty-five percent of patients had BCVA equal to or better than 20/40 at the final visit. The mean refraction at baseline was –4.78 ± 5.87 diopters, which changed to less myopic refraction of –2.90 ± 3.83 diopters at the final visit. Optical correction was prescribed in 66% of eyes at the final visit. The average final stereopsis was 395.33 sec of arc. The linear regression model showed a significant association between the surgery success rate and final BCVA as well as stereoacuity (Pvalues: 0.04 and 0.03, respectively). Intraocular pressure (IOP) decreased significantly from 29.79 ± 7.67 mmHg at baseline to 16.13 ± 3.41 mmHg at the final follow-up (P = 0.001). Conclusion: Patients with PCG can achieve an acceptable visual acuity and stereoacuity, particularly in cases of timely intervention and close follow-up.

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Section: Discussioncontrasting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

The Long-term Visual Outcomes of Primary Congenital Glaucoma

Esfandiari¹,

Prager²,

Hassanpour³

et al. 2020

JOVR

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“…There are an estimated 64.3 million individuals who experience glaucoma worldwide, with an estimated 3.36 million in North America (Tham et al, 2014). As of 2010, bilateral blindness from glaucoma was globally estimated to affect 8.44 million individuals (Khanna & Ichhpujani, 2012). Given the profound effect that vision loss has on the quality of life of individuals with glaucoma and the absence of a permanent cure, it is evident that vision devices will become increasingly necessary.…”

mentioning

confidence: 99%

The Effect of an Innovative Vision Simulator (OrCam) on Quality of Life in Patients with Glaucoma

Waisbourd¹,

Ahmed

Newman

et al. 2019

Journal of Visual Impairment & Blindness

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Purpose:The aim of this study was to determine the impact of OrCam on vision-related quality of life of patients with legal blindness and end-stage glaucoma. OrCam is a device comprised of a camera and earpiece attached to the user’s eyeglass that translates written text to speech.Methods:In this prospective, observational study, a total of 27 participants were recruited and tested. All participants were legally blind. Participants were provided with the OrCam device during the study period and trained how to operate it. National Eye Institute Visual Functioning Questionnaire-25 (NEI-VFQ-25) and other questionnaires were given to participants at the baseline visit and at the end of the 4-week study for comparison. Additional questions were surveyed weekly during the study to monitor progress.Results:At the final visit after 1 month, most participants, 74.1% ( n = 20/27), reported an increase in their overall quality of life. Participants were highly satisfied with the device; 88.9% ( n = 24/27) reported being “very satisfied” or “satisfied” with the device. The NEI-VFQ-25 near vision subscale score improved from 29.9 to 37.2 ( p = .045).Discussion:OrCam allowed participants with legal blindness to read independently when in controlled settings, subsequently improving their quality of life. However, users had more difficulty using the device when the location of text was not readily apparent (e.g., street signs, billboards), and users with some degree of vision had an easier time aligning the device with the text.Implications for practitioners:This device may offer participants with visual impairments the opportunity to read independently.

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