Results of treatment of myopia progression by the method of cryogenic scleroplasty

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Abstract


AIM: To evaluate the results of the effectiveness of cryogenic scleroplasty.

MATERIALS AND METHODS: 184 children (313 eyes) (mean age 11,72 ± 3,76 years) with moderate and high progressive myopia were examined before and after cryogenic scleroplasty (main group) and Pivovarov’s scleroplasty (control group).

RESULTS: A smaller average annual difference in the spherical equivalent of refraction (∆SEav) and the average annual gradient of the axial length (∆ALav) were recorded in the group of patients after cryogenic scleroplasty according to the data obtained during the two-year follow-up. ∆SEav was –0,48 ± 0,45 diopters in the main group and –0,51 ± 0,34 diopters in the control group in children of the younger age subgroup (up to 9 years old); –0,35 ± 0,31 diopters in the main group and –0,69 ± 0,61 diopters in the control group (p = 0,047) in the older age subgroup (9 years and older). ∆ALav in the main group was 0,15 ± 0,11 mm in children under 9 years of age, 0,31 ± 0,14 mm (p = 0,016) in the control group; 0,29 ± 0,18 mm and 0,34 ± 0,32 mm in children 9 years old and older, respectively.

CONCLUSIONS: The proposed technology of cryogenic scleroplasty has two surgical approaches in the lower-internal and upper-external parts of the eyeball; the scleroplastic material adheres evenly to the sclera, covers all four quadrants of the eyeball; it is fixed under the rectus muscles of the eye; at a 24-months follow-up period showed a good stabilizing effect.


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About the authors

Nikolay P. Pashtaev

S.N. Fedorov Eye Microsurgery Federal State Institution, the Cheboksary Branch; I.N. Ulyanov Chuvash State University

Author for correspondence.
Email: pashtaevnp@gmail.com
ORCID iD: 0000-0003-2324-8044
SPIN-code: 9629-3161

Russian Federation, 10, Traktorostroiteley str., Cheboksary, 428028; Cheboksary

Dr. Sci. (Med.), professor

Irina N. Grigorieva

S.N. Fedorov Eye Microsurgery Federal State Institution, the Cheboksary Branch

Email: grigir09@mail.ru
ORCID iD: 0000-0003-1107-9810
SPIN-code: 4635-3437

Russian Federation, 10, Traktorostroiteley str., Cheboksary, 428028

ophthalmologist

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Supplementary files

Supplementary Files Action
1.
Fig. 1. Scheme of the location of the incisions of the conjunctiva and tenon capsule (left eye). 1 – in the inferio-nasal quadrant, 2 – in the superio-temporal quadrant

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2.
Fig. 2. Layout diagram transplants in the inferio-nasal quadrant (left eye). 1 – m. rectus inferior, 2 – m. rectus medialis

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3.
Fig. 3. Layout diagram transplants in the superio-temporal quadrant (left eye). 1 – m. rectus lateralis, 2 – m. rectus superior

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Copyright (c) 2021 Pashtaev N.P., Grigorieva I.N.

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