The Significance of Javal??s Rule

Mote, H G; Fry, G. A.

doi:10.1097/00006324-193910000-00001

Cited by 9 publications

(3 citation statements)

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“…In general, the results of the present study support previous findings that the human eye possesses approximately 0.50D of residual astigmatism (Mote & Fry 1939;Kratz & Walton 1949;Neumueller 1953;Loper 1959;Sarver 1963Sarver , 1969Carter 1972Carter , 1980Reading 1972). The proportion of eyes exhibiting against-the-rule, with-the-rule and oblique residual astigmatism also matches previous reports (Carter 1972(Carter , 1980.…”

Section: Discussionsupporting

confidence: 92%

“…Previous workers have studied residual astigmatism for the purpose of predicting ocular astigmatism from keratometric readings (Mote & Fry 1939;Kratz & Walton 1949;Neumueller 1953;Carter 1972Carter ,1980 or otherwise to determine the accuracy of correcting ametropia with spherical surfaced hard contact lenses (Sarver 1963(Sarver , 1969. The present authors are interested in the contribution of internal ocular surface toricity and misalignment to residual astigmatism in human eyes.…”

Section: Discussionmentioning

confidence: 99%

“…Numerous authors have measured the levels of residual astigmatism exhibited by human eyes (Mote & Fry 1939;Kratz 8c Walton 1949;Loper 1959;Carter 1972;Reading 1972). Although it is generally accepted that residual astigmatism is aganist-therule for most eyes (Neumueller 1953, Carter 1972, detailed information as to the variation of the residual astigmatic power axis (Carter 1980) and its relationship to that of the cornea have not, as far as the authors are aware, been reported.…”

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confidence: 99%

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A study of the axis of orientation of residual astigmatism

Dunne

Elawad

Barnes

1994

Acta Ophthalmologica

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The aim of this study was to determine the axis of orientation of residual astigmatism in a sample of human eyes applying the principle of astigmatic decomposition. Calculations were carried out on keratoscopic and refractive data collected from the right and left eyes of 70 subjects (37 male and 33 female students) of mixed race (including 25 Asians and 43 Caucasians). No statistically significant difference was found for mean levels of residual astigmatism measured in the right (0.46 DC x 98.2 degrees) and left (0.50 DC x 99.4 degrees) eyes. Residual astigmatism was predominantly against-the-rule (83% of right eyes and 66% of left eyes) and was within +/- 20 degrees of being perpendicularly disposed relative to the corneal astigmatic power axis in two thirds of the eyes measured. No statistically significant differences were found for either gender or race.

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