Study On The Effect Of Different Degrees Of Eyeball Protrusion On Ocular Light Exposure In Mongolian People

Objective:To explore the effect of eyeball protrusion on the amount of light exposure into the eye.Methods: Use Face Gen Modeller software to obtain the original model of Mongolian gender that can accurately express the gender.After processing and cutting,import the 3DMax software,and use the fixed-point cutting and separation method for the local model to analyze the active eyeball model and construct different eyeballs for men and women.Prominence model-Average eye protruding degree(AVE),maximum eye protruding degree(MAX),minimum eye protruding degree(MIN)totaling 6 in the skylight rendering system with preset background environment(time,location,weather conditions)To conduct a simulated light exposure study of the eye light exposure model.Use the 3Ds Max software to construct the maximum incidence angle of direct light(3D OMIADL)for Mongolian bisexual 3D eyes,render the model according to the daylight system,and set the region and time in the simulation system to the summer solstice in the Sanya region(at this time Obtain the light exposure level under the environment of maximum solar altitude),and output the rendering result.After reading the rendering results using MATLAB 2018 a software,the gray value and average value of 45 pixels of the left pupil are obtained,and the light intensity value under different models is calculated according to the calculation formula.Results: 1.Mongolian races have different eyeball protrusions,different eye light exposures,different gray values and light intensity values reflecting the eye light exposures,the difference is statistically significant,P<0.05,the maximum degree of eyeball protrusion Max The cumulative light exposure is about 20% higher than the minimum degree of eye protrusion Min.2.Men and women of different genders have different eye protrusions and different light exposures.The difference between the two is statistically significant,P<0.05.Among them,the light exposure of female eyes is greater than that of men under different eye protrusions.The maximum light exposure of women is about 5% higher than that of men.The average light exposure of Ave is not much different from that of men.3.The 3D OMIADL of the Mongolian bisexual model is always the maximum eye protrusion Max>average eye protrusion Ave>minimum eye protrusion Min.With the increase of SEA,the maximum direct eye protrusion Max received under the same simulation date and gender model.Is the most,female models receive more direct light than men.The 3D OMIADL of male and female models with different eye prominences differed the most at SEA55° and SEA70°,respectively.4.From the study of the influence of the four variables of eye protrusion,3D OMIADL,SEA and rotation angle on eye light exposure,it can be seen that eye protrusion has the most significant effect on eye light exposure,the difference is statistically significant,P<0.05.5.Through multiple linear regression analysis of SEA,eye protrusion,rotation angle,3D OMIADL and light exposure intensity,the correlation regression equation of the gender model was obtained.In the range of 180° facing the sun,when SEA<30°,the light exposure intensity of the eyes of the two sexes is not statistically significant to the eyeball protrusion and 3D OMIADL;the P values of SEA and rotation angle are statistically significant,P <005.When SEA is 30°-60°,the male model's SEA,eyeball protrusion,rotation angle,3D OMIADL are all related to the light exposure intensity,P are all <0.05;while the female model's 3D OMIADL and the light exposure intensity are not statistically significant,SEA,Protrusion of eyeball,rotation angle and light exposure intensity were all P<0.05.When SEA>60°,the male model's SEA,eyeball protrusion,rotation angle,and 3D OMIADL are all related to the light exposure intensity,and the female model is related to all the factors except 3D OMIADL and the light exposure intensity.Conclusion: 1.The simulation results of the Mongolian amphibious model reflect that the cumulative light exposure of the eye protrusion Max is about 20% higher than the eye protrusion Min.2.The cumulative light exposure of the eye protrusion Max is about 5% higher in women than men.3.Among the four variables of eyeball protrusion,3D OMIADL,SEA,and rotation angle,eyeball protrusion has the most significant effect on eye light exposure.