NESA XSIGNAL® терапия в офталмологията
NESA · Ophthalmology

Calm for the eye’s fine systems.

NESA supports ophthalmic conditions linked to autonomic dysregulation, non-invasively.

Self-recognition

Do you recognise yourself?

A dry eye that does not fully respond

✓dry or gritty eyes
✓burning or itching
✓vision that fluctuates
✓tears relieve only briefly
✓a foreign-body sensation
✓eyes that tire early
What happens in the autonomic nervous system

Like an irrigation system that barely drips; with a stronger parasympathetic “brake” the eye moistens better. Tear secretion is parasympathetically driven.

Self-assessment, not self-diagnosis — discuss with a professional.

NESA benefits

Non-invasive modulation of the autonomic nervous system.

01
01

Regulation

Balance of autonomic responses.

02
02

Comfort

Reduction of tension and fatigue.

03
03

Recovery

Support for recovery.

Downloads

Download the NESA presentation.

Mechanism, indications, protocols and clinical data for implementing NESA.

PDF NESA presentationBulgarian · NESA ↓
NESA XSIGNAL® терапия в офталмологията — микротокове през крайниците
Across the four limbs

Microcurrents through the wrists and ankles — the whole autonomic axis at once.

In depth · autonomic regulation

The eye is under close autonomic control.

Pupil width, accommodation, tear-film production and ocular blood flow are regulated by sympathetic and parasympathetic input. Unbalanced autonomic regulation with sympathetic dominance can present as blurred vision, focusing problems, eye pain and changes in tear film and vascular tone. NESA addresses not the eye itself but the autonomic regulation; many ophthalmic procedures are done on an awake patient, where the baseline autonomic state affects comfort and recovery.

Clinical fields: pre-operative anxiety (L1), acute intra-operative anxiety (L2), immediate post-operative care (L3) and dysautonomia-related visual complaints (L4 — min. 20 sessions, extendable to 30–40). Three-phase lead electrode: central (sternum, C6–C7) → metameric (C1–C2) → toward the affected zone. 60-min session, LOW; no HIGH setting is foreseen for the ophthalmic protocols.

Evidence — honestly

For ophthalmology our source has no field-specific RCTs. The effect is mechanism-based — ANS modulation, anxiety regulation and HRV. As proof of principle (not field-specific):

+40%

prefrontal alpha waves (10 sessions); −30% anxiety/obsession/hostility (20 sessions) — Álvarez de los Heros, UAH 2019.

HRV

HRV (SDNN) and vagal tone (RMSSD).

Limits & safety: NESA promises no cure. Protocols are guidelines, not prescriptions; they complement, not replace, ophthalmic care. XSIGNAL is a medical device, not for everyone. Absolute contraindications: pacemaker and pregnancy.

Protocol · 12–20 sessions · 2× weekly · 55 min

Bring NESA into your practice.

Request a demonstration →
Protocol parameters

Real values from the handbook (INF-CD-022)

Pre-operative anxiety

Sessionssingle/few
FrequencyInduction → maintenance
DurationP1 30 · P7 30–45 min
ProgrammesP1 · P7
Guiding electrodeProcessus spinosus C6–C7
QuestionnairesWeCardio · Cortisol · GAD-7

Visual disturbances in dysautonomia

Sessionsmin. 20 (up to 30–40)
FrequencyInduction → maintenance
Duration60 min
ProgrammesP1 · P2 · P7 · P8 · P9
Guiding electrodeSternum · C1–C2 · C6–C7
QuestionnairesWeCardio · GAD-7 · PSQ · PSQI

Source: NESA protocol handbook · INF-CD-022 (2025-V.1). Standard session 60 min, LOW mode by default.

Therapeutic logic

At the core: programmes P1–P9

Every protocol in this field combines the reference programmes P1–P9 — general homeostasis, body levels, ANS/CNS and targeted nerves — according to the clinical goal.

See programmes P1–P9 →
Limits & safety

Protocols are guidelines, not prescriptions.

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Parameters are guides; the therapist adapts them to the patient.

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NESA is not suitable for every patient and promises no cure.

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Absolute contraindications (pacemaker, pregnancy, active implants) follow the device IFU.