|Year : 1983 | Volume
| Issue : 5 | Page : 689-691
Topography and clinical corelation of cornea
M. & J. Institute of Ophthalmology, Ahmedabad, India
M. & J. Institute of Ophthalmology, Ahmedabad
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Lavingia B. Topography and clinical corelation of cornea. Indian J Ophthalmol 1983;31:689-91
Findings are usually committed to memory until the examination is finished. Therefore some sketching during examination is helpful.
At present, there is no standard scheme accepted for documentation of corneal diseases. Different people use their own individual method. None of these methods include documentation of surgical procedures on cornea.
The method presented here is being used in Cornea Clinic of M & J Institute of Ophthalmology, Ahmedabad.
| Method|| |
Drawing is done on a special chart with a colour code.
The chart is made-up of front view of cornea showed as a circle cornea is represented as 1 mm = 1.5 cm scale on it. Thus the outer circle measures 18 cm. There are 3 more circles at 2.25 cm distance from the outer one, dividing it into 4 circular segments. Whole circle is divided in 12 segments of 30° each, by radial lines.
Three optical sections are also drawn on the scale of 1 mm = 1.5 cm. Cut section can be drawn Lbetween any two points on the cornea.
The signs used for charting are very similar to the natural appearance of the condition. Colour-codes also represents the original colours. For example, corneal opacities are drawn with gray pencils slids 1, 2, 3, 4, 5. Iris bombe, k.p., iris pigments, synechiae are drawn in brown colour. Blood vessels and haemorrhages in red colour. Fluorescein staining in green and oedema in blue colour. Pus with yellow colour. Shapes of lesions are also drawn, very similar to the normal appearance of the shape of the lesion. This makes the interpretation of the chart easy. Staphyloma as an irregular circular, k.p. as brown triangle, synechia as crosses, sutures loops. Superficial blood vessels as lines deep as criss-cross.
Bullae as elevations and pits as depressed half-circles. Epithelium as squares and endothelium as hexagonals. Stroma as linear shadowing. Descements as green lines and Bowman's as violet line in cut sections. Infections like ulcer are drawn as yellow with green margin, hyphemea as red, hypopyon in yellow. Varies degenerations like pterygium and marginal degeneration, as drawn according to the shape. Surgical procedures on the cornea are drawn with black pencil. Like LK as a thin circle; P.K. as a thick circle, mushroom in double circle. Iridectomies as black triangle at the site. Sutures are drawn as lines and loops as shown in figure in different ways. For interuppted continous and half thickness through and through.
Optical section can show the exact depth of lesion and the particular structure involved in lesion.
| References|| |
Bron, A.J., British J. of Ophthal., 57, 629, 1973.
Mohan, M., Mukherjee, G., Angra, S.K. Indian J. of Ophthal.,
25, 58, 1980.
Schepens C.L. Symposium on Retinal detachment.
[Figure - 1], [Figure - 2], [Figure - 3], [Figure - 4], [Figure - 5], [Figure - 6], [Figure - 7], [Figure - 8], [Figure - 9], [Figure - 10], [Figure - 11]