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Table 3 Regression analysis between optical zones and postoperative SE in different preoperative refractive status

From: Influence of optical zone on myopic correction in small incision lenticule extraction: a short-term study

 

Preoperative SE (D)

 
 

Lower Third

Upper Third

 

Parameter

≤-4.00

≥ -5.38

P

No. of eyes

193

194

 

Preoperative SE (D)

   

Mean ± SD

-3.18 ± 0.67

-6.50 ± 0.89

< 0.001

Range

-4.00 to -1.50

-9.25 to -5.38

 

Postoperative SE (D)

   

Mean ± SD

-0.17 ± 0.32

-0.11 ± 0.49

< 0.001

r

0.03

0.28

 

Linear regression equation

Y= -0.07*X + 0.63

Y = 0.48*X-3.03

 

P

0.702

< 0.001

 
  1. SE = spherical equivalent; D = diopters
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BMC Ophthalmology

ISSN: 1471-2415

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