Study of correlation between stereopsis and retinal nerve fiber layer thickness in cases of glaucoma

Dhar, Sanjay; Kurumkattil, Raji; Shankar, S.; Abhijit,

doi:10.1016/j.mjafi.2020.01.004

Cited by 3 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The progressive loss of RGC in patients with glaucoma can be correlated with decreased depth perception seen in glaucoma. This structural basis of stereoacuity deficits was explored in one study and found that with decrease in RNFL thickness, stereoacuity both for distance and near decreases [ 7 ]. Studies have shown that decrease in stereopsis effects the quality of life in them.…”

Section: Introductionmentioning

confidence: 99%

“…Depth perception deficit may precede visual field loss in glaucoma [ 5 ]. The studies done in past in glaucoma patients reporting depth deficits means ranged from 118 to 494 arc sec [ 3 , 7 – 10 ]. More so, only few studies have examined stereopsis in glaucoma and suspects as well, and two of them have reported stereopsis deficits [ 2 , 3 , 9 ] However, in one study stereopsis deficits were not detected in glaucoma suspects [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of depth perception and association of severity in Glaucoma patients and suspects

2021

View full text Add to dashboard Cite

Background To evaluate depth perception in Primary open angle glaucoma (POAG), glaucoma suspects compared to controls and to determine the association between depth perception and severity of glaucoma. Methods This was a hospital based, comparative, cross-sectional study. The ethical clearance was taken from institutional review committee of Institute of Medicine [Reference no.399 (6–11) E2 077-078]. Agematched, equal number of participants in each group (N=20) were evaluated with both Titmus and Frisby stereoacuity tests to measure depth perception as stereopsis threshold in seconds of arc. The participants were selected using the purposive sampling technique. Results There was no differences in age, sex, or best corrected visual acuity, intraocular pressure, central corneal thickness (CCT), found among the three groups (POAG, Glaucoma Suspects and Control) respectively. However, there was significant difference in cup disc ratio (CDR) between the groups. Equal number of male and female were there in each group, while in POAG group male to female ratio was 3:2. The mean stereoacuity threshold in control group was 53.5±23.23 seconds of arc with Titmus test and 38.75±18.83 seconds of arc with Frisby stereoacuity test. The difference in threshold was significant between control and glaucoma suspect with Titmus (t=1.991, p=0.05) and with Frisby (t=2.114, p=0.04). The difference was also significant in POAG group by Titmus (t=3.135, p=0.0033) and by Frisby (t=3.014, p=0.004). More so, with increasing severity of glaucoma, the mean threshold of stereopsis increased as seen with both Titmus and Frisby Tests (ANOVA, p < 0.001) Conclusion Primary open angle glaucoma patients and glaucoma suspects, showed significant reduction in depth perception. Decreased stereoacuity was associated with greater glaucomatous visual field loss.

show abstract

Section: Introductionmentioning

confidence: 99%