A simple modification of the Farnsworth-Munsell 100-Hue test for much faster assessment of color vision.

Purpose: The Farnsworth‑Munsell (FM) 100‑hue test is well known but is also time consuming, especially its analytical component. To reduce this needless time‑waste during precious working hours, a simple modification was devised. Design: Prospective, comparative, observational study. Materials and Methods: A transparent clear plastic carrier box replaced the opaque one, allowing ready digital photodocumentation of top and bottom without even opening the box, or handling/inverting the caps - 200 reportedly normals and 50 known color vision defectives could be easily tested on this modified‑FM and results stored, allowing rapid turnover. The captured scores with patient ID were analyzed, at leisure, outside hospital time, saving 45-60 minutes/ patient. After recording, the box was promptly handed over to the next subject for rearrangement. Times taken for test/patient were recorded. Results: Running time was reduced from 60-75 min to ~15 min/patient with no waste of invaluable lab hours. Turnover time is limited to capturing two photographs (~60 sec). The box is relatively cheap and easy to maintain. Conclusions: Our simplified FM 100‑hue test allowed rapid assessment of color visions with easy data storage of both top and bottom.

A new computer-adapted color vision test It's reproducibility,applicability,reliability and comparison with old conventional color vision tests / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:Present a new computer-adapted color vision test (NCACVT) and explain its reliability and value in practical application.METHODS:Farnsworth-Munsell 100 Hue test (FM100HT) and Holmgren tests had been modified and adapted to computer application.Classic method of Ishihara pseudoisochromatic plate test (IPPT)was assumed to be a convenient screening tool for color blindness;therefore the subjects were dassified as color defective group(Group I)and control group(Group Ⅱ)according to the Ishihara test results.Group I Consisted of color defective 13 subjects(12M,1F)aged between 19-29(median 21)years old and Group Ⅱ consisted of non defected control group of 13 subjects(8M,5F)aged between 19-28(median 22)years old.In order to investigate color sensitivity in both of groups,all subjects were tested with both FM100HT and NCACVT.The findings from the classical IPPT,FM100HT,and NCACVT methods were statistically compared.The error scores of NCACVT and FM100HT in two groups were analyzed by using Mann-Whitney V Test.RESULTS:The differences in error scores were statistically significant respectively (V=169,P＜O.05;U=153 P＜O.05).The cut-off point for diagnosing color vision deficiency according to NCACT Was found 23 by using receiver operating characteristic curve (ROC).According to cut-off error score of 23,NCACVT was found 100% sensitive and 100% specific in screening color vision deficiency.CONCLUSION:These features make this test a dependable,original ophthalmic practicaI screening test according to Harper & Reeves.