|Year : 1983 | Volume
| Issue : 7 | Page : 888-889
Anterior keratotomy follow up results
P Ranga Reddy
S.D. Eye Hospital, Hyderabad, India
P Ranga Reddy
S.D. Eye Hospital, Hyderabad
|How to cite this article:|
Reddy P R. Anterior keratotomy follow up results. Indian J Ophthalmol 1983;31:888-9
Professor S.N. Fyodorov of USSR has developed a surgical technique of correcting simple myopia, called the Anterior Keratotomy. This has received world wide puUlicity as a simple, safe and highly successful operation which can be done as a outpatient operation.
In 1979, 200 cases were presented by me at Amritsar conference. A careful analysis of the follow up of these cases was carried out at the corneal services unit of Sarojini Devi Eye Hospital. During the follow up the following investigations/observations were recorded. The age, sex, type of myopia visual acuity, slit lamp examination for any complication, corneal thickness and correction with extraocular glasses or with contact lenses.
| Observations|| |
Follow up Period
Total cases that attended for follow up
l. 60 months 46
2. 48 months 38
3. 36 months 30
4. 24 months 26
Lost to follow up were 60 cases 30%. Here only 70% of cases had a follow up prescription of lenses.
38 patients did not take contact lensesand extra ocular spectacles and were happy with reduced vision of 6/36 or 6/24 whatever the case.
Here useful vision is obtained in hardly 21.5% of cases. No cases deteriorated after the operation.
III Corneal Thickness
No change in the corneal thickness is noted. Haagsteit attachment Pachometer is used for measuring the thickness.
These complications did not anyway interfere with the vision of the patient.
No change noted in the dioptric power of the patient when the refraction is -2.00 to -6.00 Dsph. Change is noted about -1.0 D to 2.0 D only.
| Discussion|| |
All the operated cases have developed fine scars. "The scars have never produced any hindrance of vision to the patient. Vascularization in the scar bed and calcium and cholestrol deposits near the limbus were found in 26 cases. Earlier I have quoted that the success of the operation was 40%; now after a follow up of five years the cases show a success rate of hardly 21.5%. No case has retained 6/6 vision. Hence one has to think twice before this myopia surgery is undertaken. In follow up series 30% of cases were lost to follow up. The dramatic improvement in visual acutiy in the early post-operative period may be a pinhole effect. The fall of vision in the course of time and the refractive state reaching almost the original state makes the patient most unhappy about the operation.
| Summary|| |
Out of 200 cases operated only 140 were followed up. Lost to follow up is 30%. No case retained 6/6 vision. Corneal scars, vascularization, calcium and cholestrol deposits were seen in majority of the cases.
[Table - 1], [Table - 2], [Table - 3], [Table - 4], [Table - 5], [Table - 6], [Table - 7]