Racial variation in exophthalmometry values is observed while comparing normative values. Dunsky and later Migliori & Gladstone report the mean exophthalmetry in normal African-American population to be 18.2 and 18.56 mm respectively. Quant & Woo have reported the mean value in Asian population to be 16.73 mm. Migliori & Gladstone report the value among Caucasians to be 16.55 mm. As you have mentioned, Sodhi et al. in their study in the Indian population have reported a range of exophthalmometric values in a normal Indian population aged 3-80 years was 7-19 mm for males and 7-21 mm for females. I would tend to agree that the general Indian population has a mean exophthalmometry reading of 19 mm. WIth regards to abnormal values, any value above 21 mm or a difference of 2 mm or more between the readings of the right and left eye should arouse suspicion in cases of unilateral proptosis. Hope this helps.  

Yeah Dr. Akshay ... It will help

As study from MAMC & UCMS, suggested those Indian values is suggestive of ...

Thanx a lot 

Dr. Imtiaz, Point well taken.

However, the studies conducted in India showed the figures as Dr.Akshay has mentioned.

Males & females - 19 mm (mean)

and any difference of >2 mm from normal appearing eye.

Needs a collaborative demographic study for our race. I think 

Dear all I would respect your work but just wanted to make a point that these values are mainly dependent on age. our study which is still not at publsihed from ludde exophthalmometer shows that the mean valus are some where 15 mm with std of 1.6mm. the general trend is that values go up to third decade and then stablise and starts to drop from 5th decade. May be in few months you will see the published results from my work. thanks all.

Please find my article published in clinical ophthalmology 2021.

Normal ocular protrusion values in South indian popluation. Effect of age , gender and refractive error.