Demographic, lifestyle, visual function and MP of subjects included in this report
| Variables | n (%) |
|---|---|
| Sex | |
| Male | 40 (33.1) |
| Female | 81 (66.9) |
| Education | |
| Primary | 18 (14.9) |
| Secondary | 57 (47.1) |
| Tertiary | 46 (38.0) |
| Mean±SD | |
| Age (years) | 64.77±9.03 |
| Cataract* | |
| NO | 1.64±0.81 |
| NC | 2.41±0.95 |
| C | 0.88±1.08 |
| PSC | 0.37±0.6 |
| BCVA | |
| Study eye | 99.97±5.88 |
| Fellow eye | 95.34±11.45 |
| Letter CS (cpd) | |
| 1.2 | 1.81±0.17 |
| 2.4 | 1.80±0.20 |
| 6 | 1.52±0.23 |
| 9.6 | 1.27±0.28 |
| 15.15* | 0.90±0.32 |
| CSmesopic (cpd) | |
| 1.5 | 1.57±0.22 |
| 3 | 1.65±0.21 |
| 6 | 1.27±0.35 |
| 12 | 0.81±0.27 |
| 18 | 0.32±0.11 |
| CSphotopic (cpd) | |
| 1.5 | 1.49±0.17 |
| 3 | 1.76±0.21 |
| 6 | 1.63±0.31 |
| 12 | 1.22±0.37 |
| 18 | 0.57±0.34 |
| GDmesopic (cpd) | |
| 1.5 | 0.95±0.31 |
| 3 | 1.15±0.35 |
| 6 | 0.93±0.24 |
| 12 | 0.64±0.13 |
| 18 | 0.30±0.03 |
| GDphotopic (cpd) | |
| 1.5 | 1.43±0.19 |
| 3 | 1.70±0.20 |
| 6 | 1.54±0.32 |
| 12 | 1.15±0.37 |
| 18 | 0.54±0.33 |
| PRT | 15.98±8.23 |
| Reading | |
| RAcuity | 0.10±0.12 |
| Mean RS | 154.68±27.36 |
| Max RS | 199.79±33.02 |
| SVF | |
| VFQ_Tscore | 88.95±9.84 |
| MP* | |
| 0.25 | 0.75±0.25 |
| 0.5 | 0.63±0.21 |
| 1 | 0.44±0.17 |
| 1.75 | 0.31±0.14 |
Cataracts graded using the Lens Opacities Classification System (LOCS) III. Cataract grades - NO, nuclear opalescence; NC, nuclear colour; C, cortical; PSC, posterior subcapsular cataract.
Data displayed are mean±SD for interval data and percentages for categorical data.
*n≠121 for all variables as certain tests/measures could not be obtained.
Age, age in years; BCVA, best corrected visual acuity measured with Thompson Test Chart 2000 Xpert and recorded in visual acuity rating (VAR); cpd, cycles per degrees; CS, contrast sensitivity; CSmesopic, contrast sensitivity measured under nighttime conditions (3.0 candela per metre square (cd/m2)) using the Functional Vision Analyzer and recorded in logarithm of contrast sensitivity (LogCS) units; CSphotopic, contrast sensitivity measured under daytime conditions (85 cd/m2) using the Functional Vision Analyzer and recorded in logarithm of contrast sensitivity (LogCS) units; education, highest level of education; GD, glare disability; GDmesopic, glare disability measured under nighttime conditions (28 Lux) using the Functional Vision Analyzer and recorded in logarithm of contrast sensitivity (LogCS) units; GDphotopic, glare disability measured under daytime conditions (135 Lux) using the Functional Vision Analyzer and recorded in logarithm of contrast sensitivity (LogCS) units; LetterCS, letter contrast sensitivity (assessed using Thompson Test Chart 2000 PRO and recorded in logarithm of contrast sensitivity (LogCS) units); maxRS, maximum reading speed; meanRS, mean reading speed (calculated as the average of the reading speed scores recorded for each of the standardised sentences); MP, macular pigment measured at 0.25°, 0.5°, 1.0° and 1.75° eccentricities using customised heterochromatic flicker photometry; n, number of subjects; PRT, photostress recovery time recorded in seconds (reading assessed using the English version of the standardised Radner reading chart); RAcuity, reading acuity (Reading acuity is recorded in logarithm of the reading acuity determination (LogRAD). The formula (logRAD+total number of incorrectly read syllables ×0.005) is used to calculate the LogRAD-score.); RS, reading speed (the time taken to read the number of words in a sentence) measured in words per minute (w/min) with a stop watch for each standardised sentence (14 words ×60 s divided by reading time in seconds); SVF, subjective visual function assessed using the National Eye Institute Visual Function Questionnaire-25 (NEI VFQ-25; score range from 0 (worst) to 100 (best)); VFQ_Tscore, NEI VFQ-25 overall vision score.