Fig 1.
The severity of epicanthus was determined using the inner intercanthal distance (IICD) to interpupillary distance(IPD) ratio and the IICD to outer intercanthal distance (OICD) ratio.
Fig 2.
(A) In type 1, a skin fold from the upper eyelid covers the medial canthal angle as it approaches the lower eyelid, creating a crescent-shaped fold onto the lower eyelid. (B) In type 2, a skin fold curves over the medial canthal angle and forms a confluent fold with the lower eyelid at the interpalpebral region.
Fig 3.
IICD/IPD ratios were not correlated with age in the epiblepharon group (A), but were negatively correlated with age in the control group (B). IICD: inner intercanthal distance; IPD: interpupillary distance. Filled circles: males; empty circles: females.
Table 1.
IICD/IPD ratios by age and sex in the epiblepharon and control groups.
Table 2.
IICD/OICD ratios by age and sex in the epiblepharon and control groups.
Table 3.
Types of epicanthal fold by age and sex in the epiblepharon and control groups.