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[Study of diopters-cutting in treatment of PRK for myopia]
Zicai Huang1, Zhongxia Zhou, Suyan Chen
1Department of Ophthalmology, Shantou Central Hospital, Guangdong 515031, China.
Purpose:
To study a method of determining the diopters-cutting for photorefractive keratectomy (PRK) pre-operation.
Methods:
By statistics, to analyze the differences of diopter between optometry of mydriasis and keratectomy in 143 cases 209 eyes of medium myopia with complete data recorded.
Result:
The average diopter for optometry of mydriasis is -4.32 D, for keratectomy, -4.74 D. The average of differences is (0.42 +/- 0.173) D, P < 0.01.
Conclusion:
The numerical value of diopter-cutting for operation should be higher than for optometry of mydriasis in treatment of PRK for myopia.
