Functional assessment of reattached macula in nine cases with excellent Snellen acuities

Abstract

Purpose To compare the macular functions of patients with excellent visual acuity after retinal detachment (RD) surgery, with the healthy fellow eye. Methods Of 214 patients, nine patients, who were successfully operated because of unilateral RD involving the macula and achieved excellent visual acuity, were analysed. The fellow eyes of the patients were taken as the control group. The macular functions were evaluated with visual acuity, contrast sensitivity, colour vision, visual field, and pattern VEP in operated and nonoperated eyes. Results There was no significant difference in visual acuity, contrast sensitivity, colour vision, and VEP outcomes between operated and nonoperated eyes. However, it was seen that the mean deviation in the visual field was significantly higher in the operated eyes (5.87 1.8 dB) when compared with the undetached fellow eyes (3.171.8 dB), (t ¼ 12.5; P ¼ 0.013). Conclusion Even though the visual acuity, colour vision, contrast sensitivity, and VEP results returned to normal after a successful RD surgery, we found that the mean deviation measured by the visual field, which reflects the retinal sensitivity, was still significantly low after nearly 5 years follow-up.

Active Learning of Contrast Sensitivity to Assess Visual Function in Macula-Off Retinal Detachment

“…41 Using similar methods, Ozgür and Esgin reviewed 9 patients following-scleral buckle RD repair with BCVA better than log MAR 0.8 and found CS in RD eyes to be reduced compared with the healthy fellow eyes, yet to a nonstatistically significant degree. 43 Kawamura et al demonstrated lower CS in 36 macula-off RRD eyes with a postoperative BCVA of greater than 1.0 compared with macula-on RRD eyes following surgery. 42 The latter group used a Takagi glare tester CGT-2000 to measure CS, which has been shown to have relatively poor accuracy and repeatability.…”

“…[36][37][38] Using the 25-item National Eye Institute Visual Function Questionnaire in patients with RRD, 39 Okamoto et al reported vision-related quality of life to be significantly correlated with postoperative CS measured by preprinted letter charts, yet no correlation was found between vision-related quality of life and postoperative VA. 40 Several previous reports have shown reduced CS in patients with RRD using preprinted letter charts. [41][42][43] Despite measuring CS using methods with poor range and resolution for sampling target contrast and frequency [28][29][30] and poor test-retest reliability, 29,31,32 those reports demonstrated the detrimental effect of RD on CS.…”

Visual Response Properties of Y Cells in the Detached Feline Retina

“…It is reported that the longer the duration of macular detachment, the lower the contrast sensitivity score. 25 However, at the single-cell level, little physiological data are available on how ganglion cells respond to RD. Therefore, we went on to investigate the contrast threshold of Y cells in normal and detached retinas.…”

“…This quick decline in luminance sensitivity could be attributed to factors such as hypoxia, gradual photoreceptor apoptosis, and reattachment. Hypoxia is created by physically separating the retina from its choroidal blood supply, 18,25,32 causing fluid accumulation between the retinal pigment epithelium and the detached retina. Excess fluid under the retina Comparison of average contrast threshold in normal and detached retinas.…”