J Korean Ophthalmol Soc.  2007 Oct;48(10):1369-1378. 10.3341/jkos.2007.48.10.1369-1378.

Morphological Analysis of Papillary Retinal Vessels and Retinal Nerve Fiber Layer in Koreans

• Leem HS
• Paik DJ
• Kim HC

• KMID: 2210991
• DOI: http://doi.org/10.3341/jkos.2007.48.10.1369-1378

Abstract

PURPOSE: The study present the central retina arterial supply, optic disc shape, RNFL (retinal nerve fiber layers) thickness and optic disc rim area.
METHODS
To evaluate the relationship between central retina artery pattern, optic disk shape, and RNFL thickness was measured using optical coherence tomography (OCT3000) and pattern of the central retinal artery were investigated by TRC50IX. Healthy Koreans (107 males, 97 females) were enrolled in this study. The classification is made by dividing surface of the nerve head into ten sector.
RESULTS
As a result of the shape of the optic disc divided into four group, vertically oval were 54%. The results showed the central retinal artery, in 252 eyes, had its origin in the center. None of the eyes had their origin on temporal side. RNFL thickness according to OCT parameter was superior, 127.68+/-16.16 micrometer; temporal quadrants, 79.60+/-16.05 micrometer; inferior quadrants.
CONCLUSIONS
In summary, this study indicates that in healthy Koreans the shape of the optic disc is vertically oval and the origin of their central retinal artery is at the center. The RFNL thickness of both the superior and inferior quadrants was 127 micrometer according to OCT.

Keyword

Morphology; Retinal vessels; OCT; Optic disk

MeSH Terms

Arteries
Classification
Head
Humans
Male
Nerve Fibers*
Optic Disk
Retina
Retinal Artery
Retinal Vessels*
Retinaldehyde*
Tomography, Optical Coherence
Retinaldehyde

Figure

• 

  Figure 1. Normal optic nerve head showing ten types of distribution of the central retinal artery (CRA) origin in the optic disc by Wood's classification. (A) 1. Nasal; 2. Nasal oblique; 3. Temporal oblique; 4. Temporal; 5. Nasal-temporal up; 6. Nasal-temporal down; 7. Temporal-nasal up; 8. Temporal-nasal down; 9. Symmetric; 10. Miscellaneous. (B) Topographic measurement of the central retinal artery (CRA) in the optic disc by fundus camera (TRC50XI).

• 

  Figure 2. Distribution of the central retinal artery origin in the optic disc (A) 1. NC : Nasal center; 2. TC : Temporal center; 3. IN : Inferior nasal; 4. SN : Superior nasal; 5. ST : Superior temporal; 6. IT : Inferior nasal; 7. C : Center; (B) Topographic measurement of the central retinal artery in the optic disc by fundus camera (TRC50XI).

• 

  Figure 3. The distribution of the central retinal artery branches in the optic disc. 1. Nasal; 2. Nasal oblique; 3. Temporal oblique; 4. Temporal; 5. Nasal-temporal up; 6. Nasal- temporal down; 7. Temporal-nasal up; 8. Temporal-nasal down; 9. Symmetric; 10. Miscellaneous.

• 

  Figure 4. Distribution of the origin of the CRA in the optic disc.

• 

  Figure 5. Distribution of RNFL thickness according to sexes.

Reference

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