Wydanie 2/2004

Promień krzywizny rogówki u osób z krótkowzrocznością

Curvature Radius Of The Cornea In Short-sighted Patients

Emilia Dębińska

Zakład Elektroniki Kwantowej Wydziału Fizyki Uniwersytetu im. Adama Mickiewicza w Poznaniu Kierownik: prof. dr hab. Ryszard Parzyński

Summary: Purpose: The aim of the thesis is to evaluate the correlation between the length of the curvature radius of the cornea and the extent of myopia as well as the investigating the connection between the age of the patient and the curvature radius of the cornea. Material and methods: The examination covered 400 myopic eyes, where in addition to refractive error there were no other pathological changes. The average age of patients was 26. The patients had refractive error corrected with glasses, they had not been wearing contact lenses before, and had not been subjected to any vision correction surgery. The objective examination of refraction was done using the autorefractometer Nippon 8100/9100, the subjective refraction using the foropter, and the measurement of the curvature radius of the cornea using the Javala ophthalmometer. The correlation between the average curvature radius of the cornea and the extent of myopia was considered. The arithmetic average of the two major curvature radiuses of the cornea was assumed as the average curvature radius of the cornea. Conclusions: It was observed that the greater the myopia, the shorter the average curvature radius of the cornea, thus the cornea has a steeper shape. No correlation between the length of an average curvature radius of the cornea and the age of the patient has been observed.

Keywords: curvature radius of the cornea, short-sightedness, ophthalmometry, objective and subjective refraction.


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